Answer: D the rate that varies more with temperature
Explanation: reaction with greater activation energy is not feasible ordinarily as the reacting molecules have little or no energy to overcome the activation energy. But as the temperature of the reaction is increased, the reacting molecules gains more energy to overcome the energy barriers(activation energy) hence proceeding to form products. In this case, the rate of the reaction depends on the temperature. So an increase in temperature will increase the kinetic energy of the molecules thereby increasing the rate of the reaction and a decrease in temperature will leads to a decrease in the rate of the reaction.
Final answer:
In comparing two chemical reactions, the reaction with the greater activation energy typically has the slower rate. This is due to fewer molecules being able to overcome the higher energy barrier to react. The correct answer to the question is (A) the slower rate.
Explanation:
In comparing two reactions, if one has a greater activation energy, it generally has the slower rate. Activation energy is the energy required to initiate a reaction, and it plays a critical role in determining the rate of a chemical reaction. A higher activation energy means that fewer molecules possess the necessary energy to overcome the barrier and react at a given temperature. Thus, the reaction with a higher Ea will have a slower rate.
Therefore, the correct answer to the question is: (A) the slower rate. As temperature increases, reactions with high activation energies can speed up considerably, because the proportion of molecules with sufficient energy to overcome the Ea increases significantly. Conversely, reactions with lower activation energies are less sensitive to temperature changes since a high proportion of molecules already have enough energy, even at lower temperatures.
Which of the following will have the highest electronegativity? Silicon (Si), Phosphorus (P) or Arsenic (As). Explain your
answer
Answer:
Phosphorus
Explanation:
As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction and electronegativity increases.
As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus electronegativity decreases.
Silicon is present in group 4A and Phosphorus and Arsenic is present in group 5A thus electronegativity of silicon is less than Phosphorus and arsenic. Arsenic is present down to phosphorus thus its electronegativity will less than phosphorus.
P = 2.19
Si = 1.9
As = 2.18
if your body need alot of immediate energy, what carbon compound would you eat
Answer:
Carbohydrates
Explanation:
You would eat carbohydrates as they supply your body with lots of short-term energy that can be burned at a fast rate.
emission results in the release of energy without any apparent change in mass or nuclear charge.
alpha particle
beta particle
gamma ray
omega particle
Answer:
gamma ray
Explanation:
Gamma emission results in the release of energy without any apparent change in mass or nuclear charge.
Properties of Gamma radiations:
Gamma radiations are high energy radiations having no mass.
These radiations are travel at the speed of light.
Gamma radiations can penetrate into the many materials.
These radiations are also used to treat the cancer.
Lead is used for the protection against gamma radiations because of its high molecular density.
The lead apron are used by the person when treated with gamma radiations.
Lead shields are also used in the wall, windows and doors of the room where gamma radiations are treated, in-order to protect the surroundings.
Answer:
gamma ray
Explanation:
Which happens when a reversible reaction reaches a state of chemical equilibrium?
Explanation:
Reversible reactions that happen in a closed system eventually reach equilibrium. At equilibrium, the concentrations of reactants and products do not change. But the forward and reverse reactions have not stopped - they are still going on, and at the same rate as each other.
Every reaction strives to reach a state of chemical equilibrium, which is the point where both the forward and backward processes are occurring at the same pace. The concentrations of the reactants and products are constant at equilibrium because the forward and reverse speeds are equal.
What is chemical equilibrium ?Chemical equilibrium is the state of a chemical process where both the reactants and products are present in concentrations that have no further tendency to change over time, preventing any discernible change in the system's properties.
When a chemical reaction is reversible, equilibrium is reached when the rate at which the forward reaction is moving equals the rate at which the reverse reaction is moving.
Even though the two reactions proceed at equal but opposite rates, there are no additional changes in the reactant and product concentrations. At some point, the forward and reverse reaction rates are identical; the rate at which reactants transform into products is the same as the rate at which products transform into reactants.
Thus, Every reaction strives to reach a state of chemical equilibrium, which is the point where both the forward and backward processes are occurring at the same pace.
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Suggest the methods used to separate the following:
1. Paneer from curdled milk.
2. Chalk powder from water.
3. Sand from salt solution.
4. Saw dust from water.
5. Tea leaves from brew.
Answer:
Separation method for various ingredients are
1. Paneer from curdled milk. - Filtration
2. Chalk powder from water. - Filtration
3. Sand from salt solution. - Evaporation
4. Saw dust from water. - Skim off, sieve or filter
5. Tea leaves from brew. - Filtration.
Explanation:
By the help of a muslin cloth the paneer is separated from the curdled milk, the process is called as the filtration. The paneer will remain in the cloth and curdled milk will be removed. Separation of chalk powder from water is very easy by the process of filtration, after the filtration the chalk powder retentate and the filtrate obtained is the water in absence of chalk. Salt and sand water separation can be done with the help of evaporation. Separation of the saw dust from water takes place by the method of sieving or sedimentation. The tea leaves are separated from brew by filtration.
All metals have two oxidation numbers.
True
False
Answer: false
Explanation: metal like sodium, potassium have just one oxidation number while metals like aluminium have 3
Select all that apply.
All the elements of the halogen family are very reactive because they
readily lose one valence electron
I require only one electron to complete their outer shell
have a high electronegativity
form unstable gas molecules
Answer:
They require only one electron to complete their outer shell
Explanation:
The elements of group 17 are called halogens. These are six elements Fluorine, Chlorine, Bromine, Iodine, Astatine. Halogens are very reactive these elements can not be found free in nature. Their high reactivity is due to the presence of seven valance electrons. They need just one electron to complete the octet that's why they can not found free in nature. Their chemical properties are resemble greatly with each other. As we move down the group in periodic table size of halogens increases that's way fluorine is smaller in size as compared to other halogens elements. Their boiling points also increases down the group which changes their physical states. i.e fluorine is gas while iodine is solid.
Consider the example of sodium chloride. Chlorine accept one electron from sodium and complete the octet.
The electronegativity of chlorine is 3.16 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the chlorine. Sodium becomes positive and chlorine becomes negative ion. Both atoms are bonded together electrostatic attraction occur between them and both get complete complete octet.
Answer:
1) have a high electronegativity
and
2) require only one electron to complete their outer shell
Explanation:
VIOUS
Namella
Part 1: Molar Mass
Use the periodic table to find the molar masses of the following
HCI
K2CO₃
Ca(OH)2
Na3PO4
Answer:
Explanation:
Molar mass:
Molar mass of substance is sum of atomic weight of all the atoms of elements present in it.
HCl
Atomic weight of hydrogen = 1.008 amu
Atomic weight of chlorine = 35.5 amu
Atomic weight of HCl = 1.008+ 35.5 = 36.508 g/mol
K₂CO₃:
Atomic weight of potassium = 39.0893 × 2 = 78.1786 amu
Atomic weight of carbon = 12 amu
Atomic weight of oxygen = 16×3 = 48 amu
Atomic weight of K₂CO₃ = 48+12+ 78.1786 = 138.178 g/mol
Ca(OH)₂:
Atomic weight of calcium = 40 amu
Atomic weight of oxygen = 16× 2 amu = 32 amu
Atomic weight of hydrogen = 1.008× 2 = 2.016 amu
Atomic weight of Ca(OH)₂ = 74.016 g/mol
Na₃PO₄:
Atomic weight of sodium = 23×3= 69 amu
Atomic weight of phosphorus = 31 amu
Atomic weight of oxygen = 16 × 4 = 64 amu
Atomic weight of Na₃PO₄= 69+31+64 = 164 g/mol
PLZ GIVE HELP!!!! I WILL GIVE BRAINLIEST!!!!
Nitrogen is 1.25 g/L
Sulfur dioxide is 2.86 g/L
Methane is 0.714 g/L
Hope I helped :)
Explanation:
The formula used :
[tex]PM=dRT[/tex]
Where:
P = pressure of the gas
M = Molar mass of the gas
d = Density of the gas
T = temperature of the gas
R = Universal gas constant = 0.0821 atm L/mol K
A.
The density of the gas at STP, d = 1.25 g/L
Pressure of the gas = 1 atm
Temperature of the gas = T = 273 K
[tex]M=\frac{dRT}{P}=\frac{1.25 g/L\times 0.0821 atm l/mol k\times 273 K}{1 atm}[/tex]
M = 28.01 g/mol
Molar mass of nitrogen gas =28 g/mol ≈ 28.01 g/mol
The density of nitrogen gas at STP is 1.25 g/L.
B.
The density of the gas at STP, d = 2.86 g/L
Pressure of the gas = 1 atm
Temperature of the gas = T = 273 K
[tex]M=\frac{dRT}{P}=\frac{2.86g/L\times 0.0821 atm l/mol k\times 273 K}{1 atm}[/tex]
M = 64.10 g/mol
Molar mass of sulfur dioxide gas = 64g/mol ≈ 64.10 g/mol
The density of sulfur dioxide gas at STP is 2.86 g/L.
C.
The density of the gas at STP, d = 0.714 g/L
Pressure of the gas = 1 atm
Temperature of the gas = T = 273 K
[tex]M=\frac{dRT}{P}=\frac{0.714 g/L\times 0.0821 atm l/mol k\times 273 K}{1 atm}[/tex]
M = 16.00 g/mol
Molar mass of methane gas = 16 g/mol
The density of methane gas at STP is 0.714 g/L.
Using the drop-down menus, label the parts of the rock
cycle.
A~
B~
C~
D~
Answer:
A is Sediments
B is metamorphic rock
C is sedimentary rocks
D is weathering
Explanation:
A represent smaller particles of rocks known as sediments. From the picture above sedimentary rocks, igneous rocks and metamorphic rocks were broken into smaller constituent due to events like weathering(D). Weathering disintegrated these rocks into smaller particles (sediments).
B is rock known as metamorphic rocks. Metamorphic rocks are formed from igneous, sedimentary or even metamorphic rocks. The major factor behind metamorphic rocks formation is temperature and pressure. Generally, the parents rocks never melts, the transformation usually occur in a solid state. Metamorphism is a process that is usually accompanied with change in mineral assemblage , physical attribute of the rocks or both. From the picture above the sedimentary rocks(C) was converted to metamorphic rocks due to temperature and pressure . Same occurrence was present in the conversion of igneous rocks to metamorphic rocks(B)
C is a sedimentary rocks. Sedimentary rocks are formed from smaller particles of the weathered rocks. The smaller particles are known as sediments. This sediments are then cemented and compacted by cementing agents to form sedimentary rocks.
D is a process, which is known as weathering. Weathering is the disintegration of rocks into smaller particles to form sediments . Weathering may involve change in the chemical composition of rocks or just a physical change . From the picture above igneous rocks, metamorphic rock and sedimentary rocks were weathered to form sediments(A).
Answer:
Explanation: i got 100% on edge.
which of the following atoms will not react with water
Answer:
Among Na ,K , Pb , Li , The atom which does not react with water is :
Pb
Explanation:
Li : Reacts slowly with water
Na ,K : Reacts vigorously with water
Pb : It does not reacts with water because :- Pb oxidize in presence of atmospheric oxygen to form lead oxide (PbO) . this PbO form a layer over the surface of Pb and make it inert to water.
418 N force to move a 56 kg mass, at what rate does the object accelerate?
Answer:
7.5 m/s²
Explanation:
Given data:
Force on object = 418 N
Mass of object = 56 kg
Acceleration rate = ?
Solution:
Definition:
The acceleration is rate of change of velocity of an object with respect to time.
Formula:
a = Δv/Δt
a = acceleration
Δv = change in velocity
Δt = change in time
Units:
The unit of acceleration is m.s⁻².
Acceleration can also be determine through following formula,
F = m × a
a = F/m
Now we will put the values.
a = 418 N/ 56 kg
N = Kg. m /s²
a = 418 Kg. m /s²/ 56 kg
a = 7.5 m/s²
Some kinds of matter are attracted to a magnet. Is this a physical or chemical property of matter?
Answer:
Physical Property
Explanation:
Magnetism is temporary untill you seperate the objects. There is no chemical change involved before, after, or during.
The attraction of certain materials to a magnet is a physical property of matter because it doesn't involve a change in the chemical composition of the material but rather relates to the arrangement and behavior of its electrons.
The attraction of certain types of matter to a magnet is a physical property of matter. Physical properties are characteristics of a substance that can be observed or measured without altering the substance's chemical composition. Magnetism is one such property that describes a material's ability to be attracted to or repelled by a magnet.
The phenomenon of magnetism arises from the alignment and behavior of the electrons in the atoms or molecules of a material. Materials that exhibit magnetic properties have domains where the magnetic moments of the individual atoms or molecules align in a particular direction. When exposed to an external magnetic field, these domains can align with the field, causing the material to be attracted to the magnet.
Importantly, this attraction is reversible and does not involve a change in the material's fundamental chemical composition. When the magnetic field is removed, the material returns to its original state. Common magnetic materials, such as iron, nickel, and cobalt, have unpaired electrons in their electron configurations, which allows them to exhibit strong magnetic properties.
In contrast, chemical properties of matter involve changes in the chemical composition of substances, such as reactions that form new compounds or alter the arrangement of atoms within molecules.
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An airplane attempting to fly higher than 300,000 feet will
Answer:
Begin to succumb to the power of gravity because of the decrease in lift
Explanation:
Final answer:
An airplane climbing to altitudes higher than 300,000 ft would struggle with decreased lift due to lower air density and would not necessarily require an extra engine. Engines produce less power with increased altitude, so the airplane must efficiently use its existing engines to maintain climb without compromising lift. So the correct option is D.
Explanation:
When an airplane attempts to fly higher than 300,000 ft, it would not typically need an extra engine but will begin to succumb to the power of gravity because of the decrease in lift, that is, option D. At such altitudes, the air density is much lower, meaning there is less air to generate lift. Indeed, for straight and level flight, an aircraft must maintain a balance where the thrust equals the drag. As the airplane ascends, the air becomes thinner (density altitude increases), and to maintain the same lift, the aircraft would need to travel at higher speeds or have a greater angle of attack. However, the engines' efficiency also decreases with altitude, as they are designed to operate optimally within certain atmospheric conditions.
Furthermore, jet engines, like turbojets, produce less power at higher altitudes due to the reduced air density. Thrust from engines does not counteract drag by increasing the number of engines but by optimizing performance of existing engines. To climb and maintain velocity, aircraft need to produce enough excess power to convert that energy into increased potential energy without compromising the energy needed for maintaining lift.
The student needs to understand that the trade-off between kinetic and potential energy in an aircraft is similar to a car climbing a hill. To increase altitude without losing speed, additional power is required to offset the energy directed towards increasing altitude. Thus, the aircraft must be capable of generating the additional power needed to climb, which becomes more challenging as altitude increases.
5. How can you describe the specific heat of olive oil if it takes approximately 420 J of heat to raise the
temperature of 7 g of olive oil by 30°C?
Not enough information is given.
greater than the specific heat of water
c. less than the specific heat of water
equal to the specific heat of water
Answer:
Lower than the specific heat capacity of water
Explanation:
Specific heat capacity of a material is defined as the amount of heat needed to raise 1 g of that substance by [tex]1^oC[/tex]. Specific heat capacity is typically used in the equation which relates heat transfered to the product of specific heat capacity, mass and change in temperature, given by:
[tex]Q = cm\Delta T[/tex]
In this problem:
[tex]Q = 420 J[/tex]
[tex]m = 7 g[/tex]
[tex]\Delta T = 30^oC[/tex]
We may simply rearrange this equation for specific heat, c, in order to solve for its value:
[tex]c = \frac{Q}{m\Delta T} = \frac{420 J}{7 g\cdot 30^oC} = 2 \frac{J}{g^oC}[/tex]
We know that the specific heat capacity of water is:
[tex]c_w = 4.184 \frac{J}{g^oC}[/tex]
The value we obtained is lower than the specific heat capacity of olive oil.
The specific heat of olive oil is approximately 2 J/g °C, which is less than the specific heat of water.
Explanation:The specific heat of olive oil can be calculated by using the formula: q = mcΔT, where q is the heat energy absorbed, m is the mass of the substance, c is the specific heat, and ΔT is the change in temperature. In this case, we are given the heat (q) as 420 J, the mass (m) as 7 g, and the change in temperature (ΔT) as 30 °C. Plugging these values into the formula, we get 420 J = c * 7 g * 30 °C. Solving for c, we find that the specific heat of olive oil is approximately 2 J/g °C.
Comparing this specific heat value to the specific heat of water, which is 4.184 J/g °C, we can conclude that the specific heat of olive oil is less than the specific heat of water.
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What does X represent for this transmutation?
49Be+24He→X+01n
513B
613C
25He
612C
Answer: 612C
Explanation: 49B + 24He —> 612C + 01n
Which element has the largest atomic radius?
As
N
P
Sb
Answer:
Sb
Explanation:
The given elements are present in group 5th A in Following order:
N
P
As
Sb
As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.
As the size of atom increases the ionization energy from top to bottom also decreases because it becomes easier to remove the electron because of less nuclear attraction and as more electrons are added the outer electrons becomes more shielded and away from nucleus.
Thus antimony have largest atomic radius.
Out of the four options, Sb has the highest atomic radius.
for the reaction: magnesium atom + oxygen atom --> magnesium oxide. draw the Lewis electron dot diagram for each substance and use arrows to illustrate electron movement.
Answer:
Explanation:
Magnesium is present in second group of periodic table. It has two valance electrons. Oxygen us present in group sixteen it has six valance electrons.
Magnesium need to lose two valance electrons to complete the octet while oxygen needed two electrons to complete the octet.
When magnesium loses it two electrons it form magnesium cation Mg²⁺ and its two electrons transfer to the oxygen thus oxygen becomes anion O²⁻.
Both negative and positive charges attract each others and form magnesium oxide. MgO.
Chemical equation with electron dot illustration:
Reaction is given in attached file.
For the reaction 6CO2(g) + 6H2O(l) > C6H12O6(s) + 6O2(g), what mass, in grams, of glucose is produced from 3.00 moles of carbon dioxide?
Final answer:
To calculate the mass of glucose produced from 3.00 moles of carbon dioxide in the photosynthesis reaction, use the mole ratio from the balanced equation and the molar mass of glucose (180.16 g/mol), which results in 90.08 grams of glucose.
Explanation:
The reaction 6CO₂(g) + 6H₂O(l) → C₆H1₁₂O₆(s) + 6O₂(g) represents the photosynthesis process where carbon dioxide and water produce glucose and oxygen. To find out the mass of glucose produced from 3.00 moles of carbon dioxide, we can use the mole ratio from the balanced chemical equation and the molar mass of glucose.
The balanced equation tells us that 6 moles of CO₂ produce 1 mole of glucose (C₆H₁₂O₆). Therefore, 3.00 moles of CO2 will produce half as much glucose, which is 0.5 moles of glucose. By using the molar mass of glucose, we can convert moles to grams.
For glucose, the molar mass is 180.16 g/mol. So,
Calculate the amount of glucose in moles: (⅓) * (1 mole of C₆H₁₂O₆) = 0.5 moles of C6H12O6.Convert moles of glucose to grams: 0.5 moles * 180.16 g/mol = 90.08 grams of glucose.What measures are used to calculate the percent by volume of a solution?
Answer:s the solution expressed in the unit %. ... Solvent is a liquid which dissolves the solute.
Explanation:
Volume/volume percentage (v/v percent) is a measure of the concentration of a substance in a solution. It is expressed as the ratio of the volume of the solute to the total volume of the solution multiplied by 100. Examples: Wine has a typical alcohol content (v/v percent) of 12 percent.
Answer:
See the answer below, please.
Explanation:
The volume / volume percentage relates the volume of solute / solution volume and this is multiplied by 100.
In the case of weight / volume percentage, relate grams of solutes to milliliters of solution, then this is multiplied by 100.
WILL GIVE BRAINLYIST HELPPPPP PLEASE Which is the second stage of mitosis?
Anaphase
Interphase
Metaphase
Telophase
Answer: Metaphase
Explanation:
Metaphase is SECOND stage of mitosis, that follows prophase and comes before anaphase, during which condensed chromosomes become aligned before being separated.
During Metaphase, the chromosomes become visible due to the condensation, and the success of this stage determines whether anaphase will occur.
Therefore, metaphase is the second stage of mitosis.
Which of the following is an example of parasitism: Question 3 options: Two males lions fighting for dominance of a pride. A goby fish warning a shrimp about danger so that they both retreat to the burrow the shrimp maintains. A roundworm living inside a dog and producing eggs which then get distributed to the environment through the dog's feces. A fox hunting and eating a rabbit for food
Answer:
Around worm because it gets bebefits such as food and habitat without killing its host..
Answer:
A roundworm living inside a dog and producing eggs which then get distributed to the environment through the dog's feces.
Explanation:
Parasitism is said to be an interaction between two organism whereby one organism benefit from the relationship and the other organism suffers. Most times the organism that suffers do not die instantly.
In the case of roundworm living inside a dog and producing eggs , the dog provides the necessary environment for the roundworm to strife. The roundworm enjoys the ingested foods from the dog and also comfortable environment devoid of predators. Even when the roundworm lay eggs the dog assist in the growth of the next generation by releasing it to the environment through feces. other animals later ingest the developed egg and the cycle continues.
Fill in the blanks: The original organism is called the _____________, and new organisms are called the _____________. Thx so much!
Answer:
parent and offspring
Explanation:
I think probably what the question is referring to is in the context of biology, the "original organism" is known as the parent. The young that they reproduce are known as the offspring.
The offspring could be formed by the sexual reproduction of two parental organisms, or the asexual reproduction of just one parental organism.
convert 5ft to meters PLEASE HELP
Answer:
1.524 is 5ft to meters
Explanation:
how are complete ionic and net ionic equations written for chemical reactions in aqueous solutions
Answer:
Explanation:
Balanced Chemical equation:
HClO₂(aq) + NaOH(aq) → H₂O(l) + NaClO₂ (aq)
Ionic equation:
H⁺(aq) + ClO₂⁻(aq) + Na⁺(aq) + OH⁻(aq) → H₂O(l) + Na⁺(aq) + ClO₂⁻ (aq)
Net ionic equation:
H⁺(aq) + OH⁻(aq) → H₂O(l)
The ClO₂⁻(aq) and Na⁺ (aq) are spectator ions that's why these are not written in net ionic equation. The water can not be splitted into ions because it is present in liquid form.
Spectator ions:
These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.
Chemical equation:
NaCl(aq) + KBr(aq) → NaBr(aq) + KCl(aq)
Ionic equation:
Na⁺(aq) + Cl⁻(aq) + K⁺(aq) + Br⁻(aq) → Na⁺(aq) + Br⁻(aq) + K⁺(aq) + Cl⁻(aq)
Net ionic equation can not be written for this reaction because nothing is changed on both side. There is no solid, liquid and gaseous product. All are aqueous and cancel each other.
Which reacts with metals to form H2 gas
Answer: acid react with metals to form H2.
Explanation: metals which are more electropositve than hydrogen will always displaced hydrogen from acids. The equation below show how hydrogen is displaced from acid
Zn + 2HCl -—> ZnCl2 + H2
NEED HELP QUICKLY!!!!! Calculate the volume of each of the following gases at STP. Show your work.
A. 7.6 mol Ar
B. 0.44 mol C2H6
C. 3.6 mol NH3
Answer:
A. 170.24 dm³
B. 9.9 dm³
C. 80.6 dm³
Explanation:
Data Given:
no. of moles of Ar = 7.6 mol
no. of moles of C₂H₆ = 0.44 mol
no. of moles of NH₃ = 3.6 mol
Volume of each gas at STP = ?
Solution:
To calculate volume of gas at STP (Standard temperature and pressure) formula will be used
no. of moles = volume of gas / molar Volume
Rearrange the above equation:
Volume of gas = no. of moles x molar Volume . . . . . . (1)
where
molar volume at STP = 22.4 dm³/mol
• A. Now to calculate Volume for 7.6 mole Ar
Put value in equation 1
Volume of Ar = 7.6 mol x 22.4 dm³/mol
Volume of Ar = 170.24 dm³
___________
• B. Now to calculate Volume for 0.44 mole C₂H₆
Put value in equation 1
Volume of C₂H₆ = 0.44 mol x 22.4 dm³/mol
Volume of C₂H₆ = 9.9 dm³
___________
• C. Now to calculate Volume for 3.6 mole NH₃
Put value in equation 1
Volume of NH₃ = 3.6 mol x 22.4 dm³/mol
Volume of NH₃ = 80.6 dm³
The volume of the gases at Standard Temperature and Pressure (STP) can be calculated using Avogadro's law. For 7.6 mol of Ar, the volume is 170.24 L. For 0.44 mol of C2H6, the volume is 9.856 L and for 3.6 mol of NH3, the volume is 80.64 L.
Explanation:To calculate the volume of a gas at Standard Temperature and Pressure (STP), you can use Avogadro's law which states that one mole of any gas will occupy a volume of 22.4 liters.
The calculated volumes of the gases are:
A. 7.6 mol Ar: Volume = (number of moles * volume of 1 mole at STP) = 7.6 * 22.4 L = 170.24 L B. 0.44 mol C2H6: Volume = 0.44 * 22.4 L = 9.856 L C. 3.6 mol NH3: Volume = 3.6 * 22.4 L = 80.64 L Learn more about Gas Volume Calculation here:
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The graph of y = 3x2 + 12x + 11 is shown.
Use the graph to solve the equation 3x2 + 12x + 11 = 2
Explanation:
3*2=6
12x+11=23x
23x+6=29x
x=2
5. Express the composition of each atom in shorthand form.
a. zinc-64
b. chlorine-37
c. hydrogen-3
d. calcium-40
Answer:
Explanation:
Zinc-64 = 30 proton, 30 electron and 34 neutron
chlorine-37 = 17 proton, 17 electron and 20 neutron
hydrogen-3 = 1 proton, 1 electron and 2 neutron
calcium-40 = 20 proton, 20 electron and 20 neutron
The numbers in front are the mass number, the number of proton equal number of electron in a neutral atom and these atoms do carry charge which means they are neutral. To calculate the number of neutron simply subtract the number of proton from the mass number
The shorthand composition of atoms is represented as Element-Mass number. Examples include Zinc-64 as ^64Zn, Chlorine-37 as ^37Cl, Hydrogen-3 as ^3H, and Calcium-40 as ^40Ca.
Explanation:The composition of each atom can be expressed using shorthand notation based on the atomic number and mass number. This format is usually represented as Element-Mass number.
Zinc-64 is expressed as ^64Zn, where 64 is the mass number and Zn is the atomic symbol for Zinc.Chlorine-37 is expressed as ^37Cl, where 37 is the mass number and Cl is the atomic symbol for Chlorine.Similarly, Hydrogen-3 is represented as ^3H, where 3 is the mass number and H is the atomic symbol for Hydrogen.Calcium-40 is denoted as ^40Ca, where 40 is the mass number and Ca is the atomic symbol for Calcium.Learn more about Atomic Composition here:https://brainly.com/question/34710113
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Which of the following illustrates the conservation of matter?
A. 4 Al + 3 O2 —> 2 Al2O3
B. 2 C2H6 + 6 O2 —> 4 CO2 + 7 H2O
C. 4 CO2 + H2 —> 2 CH4 + H2O
D. Mg + O2 —> MgO
Answer:
A. 4 Al + 3 O2 —> 2 Al2O3
Explanation:
4Al + 3O2 —> 2Al2O3
There are four aluminium and six oxygen atoms on both side of equation so this equation follow the law of conservation of matter.
Law of conservation of mass:
According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.
Explanation:
This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
For example:
In given photosynthesis reaction:
6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂
there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.
Final answer:
Option A correctly illustrates the conservation of matter as the chemical equation is balanced with 4 aluminum atoms and 6 oxygen atoms on each side, adhering to the principle that matter is neither created nor destroyed in a chemical reaction.
Explanation:
The conservation of matter is a principle in chemistry that states matter is neither created nor destroyed in a chemical reaction. To illustrate this, we examine the chemical equations provided to see if they are balanced—that is, if they have the same number of each type of atom on both sides of the equation.
A. 4 Al + 3 O2 —> 2 Al2O3: This is a balanced equation showing 4 aluminum (Al) atoms and 6 oxygen (O) atoms on both sides, following the conservation of matter.B. 2 C2H6 + 6 O2 —> 4 CO2 + 7 H2O: This equation is not balanced and does not follow conservation of matter as written. There are more oxygen atoms on the product side than on the reactant side.C. 4 CO2 + H2 —> 2 CH4 + H2O: This equation does not conserve matter because there are unequal numbers of carbon, hydrogen, and oxygen atoms on each side of the equation.D. Mg + O2 —> MgO: This equation is not balanced as written and does not illustrate the conservation of matter, but it could if balanced properly (2 Mg + O2 —> 2 MgO).Therefore, option A – 4 Al + 3 O2 —> 2 Al2O3 – correctly illustrates the principle of conservation of matter because the reaction is balanced with equal numbers of atoms on both sides of the equation.