Answer:
63.86 mg
Explanation:
Molar mass is the mass of 1 mol of compound / atom.
molar mass of the compound is - 310 g/mol
mass of 1 mol is - 310 g
therefore mass of 2.06 x 10⁻⁴ mol is - 310 g/mol x 2.06 x 10⁻⁴ mol = 0.06386 g
mass of calcium phosphate is - 63.86 mg
Final answer:
To find the mass of 2.06 x 10⁻⁴ moles of calcium phosphate (Ca₃(PO₄)₂), calculate the formula mass using atomic masses of calcium, phosphorus, and oxygen. The formula mass of calcium phosphate is 310.18 g/mol. Multiplying this by the moles gives you 0.0639 grams of calcium phosphate.
Explanation:
To calculate the mass in grams of 2.06 x 10⁻⁴ moles of calcium phosphate (Ca₃(PO₄)₂), you must know the formula mass of calcium phosphate. The empirical formula indicates the compound contains three calcium ions (Ca⁺²) and two phosphate ions (PO₄⁻³). The formula mass is calculated by adding together the atomic masses of the constituent atoms: three calcium atoms, two phosphorus atoms, and eight oxygen atoms.
The atomic masses are approximately 40.08 g/mol for calcium, 30.97 g/mol for phosphorus, and 16.00 g/mol for oxygen. Calculating the formula mass, we have:
3(Calcium) + 2(Phosphorus) + 8(Oxygen) = 3(40.08 g/mol) + 2(30.97 g/mol) + 8(16.00 g/mol) = 310.18 g/mol
Now, to find the mass of 2.06 x 10-4 moles of calcium phosphate:
2.06 x 10⁻⁴ moles x 310.18 g/mol = 0.0639 grams
Therefore, there are 0.0639 grams of calcium phosphate in 2.06 x 10⁻⁴ moles of the compound.
how do i do a proper push up
Answer:
To do a proper push up
Explanation:
You need to keep your back straight, keep your hands at shoulder-width apart and keep your legs close but not too close.
Here's how to get set up to do a push up: When down on the ground, set your hands at a distance that is slightly wider than shoulder-width apart. Another good cue: draw a straight line down from your chest/nipple – it should be directly over your thumbnail.
Models are useful because
A) they are very easy to create and destroy.
B) they are very expensive and time consuming to create.
C) they are more accurate than the observing the real phenomenon.
D) they allow us to test possible forces of nature without waiting for them to occur.
I believe the answer is D
Answer: D
Explanation: Got it right on USA testprep
What do acids feel like
Answer:
In fact, some strong bases can burn the skin as badly as strong acids. Bases feel soapy or slippery because they react with acidic molecules in your skin called fatty acids. ... Like acids, bases change the colors of acid-base indicators, but the colors they produce are different. Bases turn litmus paper blue.
Acids are substances that release hydrogen ions in solution. Strong acids like Hydrochloric acid can cause a burning sensation when interacting with sensitive tissues while weak acids are generally safer to handle. Antacids are used to neutralize excess stomach acid and alleviate discomfort.
Explanation:Acids are substances that release hydrogen ions (H*) in solution, having a high tendency to participate in chemical reactions. The feeling experienced when we come into contact with acids can highly depend on their strength and concentration. For instance, strong acids like Hydrochloric acid (HCl), found in stomach, aid digestion and kill ingested microbes but they can also cause a burning sensation when they leak into the esophagus, resulting in heartburn. As for weak acids like vinegar or acetic acid, they do not ionize completely and are generally safer to handle.
Antacids, which are bases like calcium carbonate (CaCO3) or magnesium hydroxide (Mg(OH)2), are typically taken to neutralize excess stomach acid when experiencing heartburn, thus reducing the uncomfortable burning sensation.
Learn more about Acids here:https://brainly.com/question/29796621
#SPJ12
A biochemist would most likely study what ?
Answer:
Biochemists study chemical processes and chemical transformations in living organisms. Biochemists study DNA, proteins and cell parts. The word "biochemist" is a portmanteau of "biological chemist."
Explanation:
Final answer:
A biochemist would study the chemical processes within living organisms, focusing on the roles of proteins, nucleic acids, and other biological molecules in health and disease.
Explanation:
A biochemist would most likely study the chemical processes that occur in living things, which encompasses a range of disciplines from cellular biology to medicine. They particularly focus on understanding how biological molecules such as proteins, nucleic acids, carbohydrates, and lipids contribute to the structure of cells and support life's myriad functions.
Biochemists play a critical role in fields such as medicine, where they delve into disease causes and treatments, nutrition, assessing how to maintain health, and agriculture, working on improving crops and pest control. Their work involves analyzing enzymes, DNA, and other molecules to comprehend and manipulate the biochemical pathways that underlie health and diseases. This can include drug discovery and development, which is a complex process that may include detective work and experimentation to make human beings healthier.
1531 mL of a gas is collected at 9.4 mm Hg. What will the volume be at standard pressure? Standard pressure is 760 mm Hg.
Answer:
18.94 mL.
Explanation:
We can use the general law of ideal gas: PV = nRT.where, P is the pressure of the gas in atm.
V is the volume of the gas in L.
n is the no. of moles of the gas in mol.
R is the general gas constant,
T is the temperature of the gas in K.
If n and T are constant, and have two different values of V and P:
P₁V₁ = P₂V₂
P₁ = 9.4 mm Hg, V₁ = 1531.0 mL.
P₂ = 760.0 mm Hg, V₂ = ??? mL.
∴ V₂ = P₁V₁/P₂ = (9.4 mm Hg)(1531.0 mL)/(760.0 mm Hg) = 18.94 mL.
________________ in the atmosphere and ocean creates wind and ocean currents.
A. conduction
B. convection
C. radiation
D. condensation
It's B - convection that is correct...
Answer:
B. convection
Explanation:
The sun heats the atmosphere and the surface of the Earth causing convection currents to develop in the atmosphere due to heated air that rise into the atmosphere.The ocean itself regulates temperatures at the lower parts of the atmosphere thus ensures the circulation of water in the ocean through currents and waves.At the equator, heated air loses its density, making it to rise, and when it reaches the troposphere it spreads towards the pole by convection.
Eddie is going to do an experiment to find out which freezes more easily—distilled water or salt water. In what order should he do the following steps in his experiment?
Can you guys answer fast? I need big help
1. Make a Prediction
2. Fill both beakers with water
3. Dissolve salt in one of the beakers
4. Place both in the freezer and observe
5. Write a report
(Always make the prediction first! That's a hypothesis!)
Explanation:
A hypothesis is defined as an idea or explanation which is framed without any testing or experimentation.
And, in order to verify the hypothesis we need to perform the experiment. And, on the basis of experimentation we can conclude whether our hypothesis was correct or not.
For example, when we have to perform an experiment to determine which freezes more easily—distilled water or salt water. Then the steps in this experiment should be as follows.
Make a prediction about which liquid will freeze first.Fill two beakers with 250 mL of distilled water.Dissolve 30 grams of salt in one of the beakers.Place both beakers in a freezer and observe which liquid freezes first.Write a report on his findings.A boy blows up a balloon and knots the end. He leaves it on the kitchen counter. His little sister finds it and takes it outside in the sunshine.
According to Charles's law, which of the answer choices best predicts what will happen to the balloon?
Its pressure will increase.
Its temperature will decrease.
Its volume will increase.
Its volume will decrease.
I pretty sure it’s (C) it’s volume will increase.
I hope this helped!
Answer : The correct option is, Its volume will increase.
Explanation :
According to the Charles' Law, the volume of the gas is directly proportional to the temperature of the gas at constant pressure and number of moles.
[tex]V\propto T[/tex]
That means the volume of gas is directly depends on the temperature of the gas.
As, the temperature of the gas increase, the volume of gas will also increases and vice-versa.
As per question, when a boy blows up a balloon and knots the end then he leaves it on the kitchen counter. When his little sister finds it and takes it outside in the sunshine then the volume of the balloon increases due to increase in the temperature.
Hence, the correct option is, Its volume will increase.
9. How many grams of potassium sulfate are needed to make 250 mL of a 0.150 M
potassium sulfate solution?
Answer:
6.53g of K₂SO₄
Explanation:
Formula of the compound is K₂SO₄
Given parameters:
Volume of K₂SO₄ = 250mL = 250 x 10⁻³L
= 0.25L
Concentration of K₂SO₄ = 0.15M or 0. 15mol/L
Unknown:
Mass of K₂SO₄ =?
Methods:
We use the mole concept to solve this kind of problem.
>>First, we find the number of moles using the expression below:
Number of moles= concentration x volume
Solving for number of moles:
Number of moles = 0.25 x 01.5
= 0.0375mole
>>Secondly, we use the number of moles to find the mass of K₂SO₄ needed. This can be obtained using the expression below:
Mass(g) = number of moles x molar mass
Solving:
To find the molar mass of K₂SO₄, we must know the atomic mass of each element in the compound. This can be obtained using the periodic table.
For:
K = 39g
S = 32g
O = 16g
Molar mass of K₂SO₄ = (39x2) + 32 + (16x4)
= 78 +32 + 64
= 174g/mol
Using the expression:
Mass(g) = number of moles x molar mass
Mass of K₂SO₄ = 0.0375 x 174 = 6.53g
Answer:
6.97 g
Explanation:
cK-12
16.9 Molarity
Need help !!!!! Stuck
The answer is:
The new pressure will be equal to 6 atm.
[tex]P_{2}=6atm[/tex]
Why?Since we know that the temperature is constant, we can use the Boyle's Law to solve the problem.
The Boyle's Law establishes that when the temperature is kept constant, the pressure and the volume will be proportional.
So, we have the equation:
[tex]P_{1}V_{1}=P_{2}V_{2}[/tex]
We are given,
[tex]P_{1}=2atm\\V_{1}=150mL\\V_{2}=50mL[/tex]
Substituting and isolating [tex]P_{2}[/tex] from the Boyle's Law, we have:
[tex]P_{1}V_{1}=P_{2}V_{2}\\\\P_{2}=\frac{P_{1}V_{1}}{V_{2}}\\\\P_{2}=\frac{2atm*150mL}{50mL}=6atm[/tex]
Hence, the new pressure will be equal to 6 atm.
[tex]P_{2}=6atm[/tex]
Have a nice day!
Which object has the MOST gravity in the solar system?
Answer: Jupiter.
Explanation: Jupiter is the largest and most massive planet in the Solar System. Its mean radius, at 69,911 ± 6 km, makes it 10.97 the times the size of Earth, while its mass (1.8986×1027 kg) is the equivalent of 317.8 Earths.
Answer:
Jupiter
Explanation:
It is 2.5 times on what we experience on earth, it’s just depends on 3 things the density, mass and size
A visual illustration used to show mathematical relationships is called a .
Answer:
graph
Explanation:
A graph is a visual illustration of related numbers
A graph is the answer
What is the balanced equation for Al+Fe3N2>AlN+Fr?
Answer:
2 AL + Fe3N2 = 2 ALN + 3 Fe
The balanced equation for the reaction is 2 Al + Fe₃N₂ = 2AlN + 3Fe.
What is the reaction between aluminum and iron nitride?Aluminum reacts with iron nitride to form aluminum nitrate and iron metal.
The aluminum reacts slowly with nitrogen to form oxides and corrode.
The balanced equation is when both side of the reaction have equal moles of the compound.
Thus, the balanced equation for the reaction is 2 Al + Fe₃N₂ = 2AlN + 3Fe.
Learn more about balanced equation
https://brainly.com/question/7181548
#SPJ2
Which statement best describes the basis of the band theory of metallic bonding?
Answer:
C
Explanation:
Atomic orbitals overlap to form molecular orbitals in which the valence electrons in the atoms travel
what does parent material refer to? a. soil source b. organic matter c. underlying bedrock d. soil aggregates
Answer:Soil source
Explanation:
Answer:
soil source
Explanation:
True or false....
A tornado is a funnel cloud that has touched the ground.
Answer:
True
Explanation:
A tornado is a funnel cloud that has touched the ground.
When a funnel cloud reaches the ground it is called a tornado.
A funnel cloud is a rotating cone-shaped column of air extending downward from the base of a thunderstorm.
what ion does a base give up
Answer:
Hydroxide ion (OH-)
Explanation:
Most bases give up hydroxide ions whereas acids give up hydronium ions (H3O+).
1.) 3.4 moles Magnesium are mixed with 5.6 moles of Hydrochloric Acid. How many moles of Hydrogen gas are produced?
2. ) 3.4 moles of C3H8 are burned in the presence of 12.3 moles of oxygen gas. How many moles of Carbon Dioxide are produced?
3.) 5.3 moles of water (H2O) are produced from the combustion of methane (CH4). How many moles of Oxygen gas are required to produce the given amount of water?
4.) 3.7 moles of Lead (II) Nitrate are mixed with 7.8 moles of Potassium Iodide. How many grams of Potassium Nitrate will be produced?
Answer:
1. 2.8 moles of H₂
2. 7.38 moles of CO₂
3. 5.3 moles of O₂
4. 7.4 moles of KNO₃
Explanation:
Here are the steps to doing this:
1. Write the chemical equation of each reaction.
2. Balance the equation.
3. Find out the ratio between reactant and product
4. Determine the actual yield of your reactants.
5. The amount of product produced is determined by how much product the limiting reactant produces.
Let's do this!
1. Given: 3.4 moles of Magnesium(Mg) and 5.6 moles of Hydrochloric acid (HCl)
Equation:
Mg + 2HCl → MgCl₂ + H₂
Reactant to Product ratio
1 mole of Mg produces 1 mole of H₂ [tex]\dfrac{1moleof Mg}{1mole of H_{2}}[/tex]
2 moles of HCl produces 1 mole of H₂ [tex]\dfrac{2molesofHCl}{1mole of H_{2}}[/tex]
Determine actual yield of reactants
[tex]3.4moles of Mg\times\dfrac{1moleofH_2}{1moleofMg}=3.4molesofH_{2}\\\\5.6moles ofHCl\times\dfrac{1moleofH_2}{2moleofHCl}=2.8molesofH_{2}[/tex]
Since 5.6 moles of HCl can only produce 2.8 moles of H₂, before it is used up, then this means that that is all the product this reaction can produce.
2. Given: 3.4 moles of C₃H₈ and 12.3 moles of oxygen gas (O₂)
Equation:
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Reactant to Product ratio
1 mole of C₃H₈ produces 3 moles of CO₂ [tex]\dfrac{1moleofC_{3}H_{8}}{3molesofCO_{2}}[/tex]
5 moles of O₂ produces 3 moles of CO₂ [tex]\dfrac{5molesofO_{2}}{3moleofCO_{2}}[/tex]
Determine actual yield of reactants
[tex]3.4molesofC_{3}H_{8}\times\dfrac{3molesofCO_{2}}{1moleofC_{3}H_{8}}=10.2molesofH_{2}[/tex]
[tex]12.3molesofO_{2}\times\dfrac{3molesofCO_{2}}{5molesofO_{2}}=7.38molesofCO_{2}[/tex]
The answer is then 7.38 moles of CO₂
**3. 5.3 moles of H₂O
This one is a little bit different. It is asking how much of a reactant is needed to produce the amount of product given. For this, just write a balanced equation for the reaction and get the ratio of reactant to product and solve for the actual yield. Since it is only asking for oxygen gas, you just need to do that one.
Equation:
CH₄ + 2O₂ → CO₂ + 2H₂O
Reactant to Product ratio
[tex]\dfrac{2molesofO_{2}}{2molesofH_{2}O}=\[tex]7.88molesofKI\times\dfrac{1moleofKNO_{3}}{1moleofKI}=7.88molesofKNO_{3}[/tex]
Actual yield:
[tex]5.3molesofH_{2}O\times\dfrac{1moleofO_{2}}{1moleofH_{2}O}=5.3molesofO_{2}[/tex]
The answer is 5.3 moles of O₂.
4. 3.7 moles of Lead (II) Nitrate (Pb(NO₃)₂) and 7.8 moles of Potassium Iodide (KI)
Equation:
Pb(NO₃)₂ + 2KI → PbI₂ + 2KNO₃
Reactant to Product ratio
[tex]\dfrac{2molesofKI}{2molesofKNO_{3}}=\dfrac{1moleofKI}{1moleofKNO_{3}}[/tex]
[tex]\dfrac{1molesofPb(NO_{3})_{2}}{2molesofKNO_{3}}[/tex]
Actual yield:
[tex]3.7molesofPb(NO_{3})_{2}\times\dfrac{2molesofKNO_{3}}{1moleofPb(NO_{3})_{2}}=7.4molesofKNO_{3}[/tex]
The answer is 7.4 moles of KNO₃.
whats is nail polish remover
nail polish remover is acetone
A _______ property of salt is that it will _______ in water. A. physical; dissolve B. chemical; sink C. chemical; dissolve D. physical; corrode
Answer:
A
Explanation:
Dissolving a solid in liquid, in this instance table salt in water, is a physical change due to merely the state of the matter being altered. Physical changes almost always be reversed.
A A. physical property of salt is that it will dissolve in water.
Physical properties are characteristics that can be observed or measured without changing the substance's chemical identity. Examples include color, density, and solubility.
Chemical properties describe a substance's potential to undergo chemical changes or reactions and transform into a different substance. Examples include reactivity with acids and flammability.
When salt dissolves in water, it undergoes a physical change because the salt is merely dispersing at the molecular level within the water but remains chemically the same (sodium chloride). Therefore, dissolving is a physical property of salt.
Balance this reaction Al4C + H2O = Al(OH)+ CH4
Answer:
Al₄C₃ + 12H₂O ⟶ 4Al(OH)₃ + 3CH₄
Explanation:
The correct formulas are
Al₄C₃ + H₂O ⟶ Al(OH)₃ + CH₄
Often, the best way to start is to balance all atoms other than O and H, then balance O, then balance H.
1. Put a 1 in front of the most complicated-looking formula (Al₄C₃):
1Al₄C₃ + H₂O ⟶ Al(OH)₃ + CH₄
2. Balance Al:
We have fixed 4 Al on the left. We need 4 Al on the right. Put a 4 in front of Al(OH)₃.
1Al₄C₃ + H₂O ⟶ 4Al(OH)₃ + CH₄
3. Balance C:
We have fixed 3 C on the left. We need 3 C on the right. Put a 3 in front of CH₄.
1Al₄C₃ + 12H₂O ⟶ 4Al(OH)₃ + 3CH₄
4. Balance O:
We have fixed 12 O on the right. We need 12 O on the left. Put a 12 in front of H₂O.
1Al₄C₃ + 12H₂O ⟶ 4Al(OH)₃ + 3CH₄
Every formula now has a fixed coefficient. The equation should be balanced.
5. Check that atoms balance:
\[tex]\begin{array}{ccc}\textbf{Atom} & \textbf{On the left} & \textbf{On the right}\\\text{Al} & 4 & 4\\\text{C} & 3 & 4\\\text{H} & 24 & 24\\\text{O} & 12 & 12\\\end{array}[/tex]
The balanced equation is
Al₄C₃ + 12H₂O ⟶ 4Al(OH)₃ + 3CH₄
Answer:Al4C + 4(H20) = 4AL(OH) +CH4
Explanation:
the equation is balance on both sides,
4 aluminums on both sides
1 carbon on both sides
8 hydrogens on both sides
4 oxygens on both sides
which equation represents a transuranium
Answer:
1) Since you have not provided the equations to select the right one, I am going to explain you the relevant facts that are used to solve this question.
2) The transuranium elements are the chemiical elements with atomic number greater than that of the uranium.
The atomic number of uranium is 92. So, the transuranium elements are the elements with atomic number 93 or greater.
This are some of the transuranium elements:
Neptunio - 93
Plutonium - 94
Americium - 95
Curium - 96
Berkelium - 97
Californium - 98
Einstenium - 99
And so all the known elements (the last one is the 118).
3) In a nuclear reaction the total mass number ( shown as superscript to the left of the symbol) and total atomic number (shown as subscript to the left of the symbol) are conserved.
4) Beta decay is the release of a beta particle, which is an electron (considered massles and with charge - 1). So, the beta decay is represented with the symbol:
0
β, which means 0 mass and charge - 1.
-1
5) This is, then, an example of a β decay equation for one transuranium element:
239 239 0
Np → Pu + β
93 94 -1
As you see 239 = 239 + 0 and 93 = 94 - 1, showing that the total mass number ( shown as superscript to the left of the symbol) and the total atomic number (shown as subscript to the left of the symbol) are conserved.
Explanation:
first correct awnser will be brainleist
In school, Jarrett learned that salt lowers the freezing point of water. He wants to test this in a home experiment.
Jarrett adds 100 mL of water at 25°C into each of three identical containers. He then adds 0 g of salt to the first container, 25 g of salt to the second, and 50 g of salt to the third container.
Which of the following is a constant in his experiment?
A the amount of water
B the starting temperature of the water
C the amount of salt
D the type of container
A. the amount of water is a constant (aka independent variable)
The amount of water is constant in the Jarrett in each of the three identical containers experiment.
What is a boiling point?The temperature at which a liquid boils and turns to vapour.
The water molecules need more energy to produce enough pressure to escape the boundary of the liquid.
The more salt (or any solute) added to water, the more you raise the boiling point.
When the ionic compound salt is added to the equation, it lowers the freezing point of the water.
Salt molecules block water molecules from packing together when the temperature is lowered.
It then prevents them from becoming ice. More water molecules leave the solid phase than the ones entering the solid phase.
Hence, option A is correct.
Learn more about a boiling point here:
https://brainly.com/question/2153588
#SPJ2
what property of air allows it to flow down to the floor?
I am not sure about my answer, but I think that it's density allows it to fall to the ground/floor.
The property of air that allows it to flow down to the floor is related to convection and density. Warmer air is less dense and rises, while cooler air is more dense, descends and flows down to fill the space left by the rising warm air.
Explanation:The property of air that allows it to flow down to the floor is related to the principles of convection and density. Specifically, warmer air is less dense than cool air. So, when air is heated, it becomes less dense and rises. Meanwhile, the cooler, denser air descends or flows down to replace the rising warm air. This constant switch involving the upward and downward movement of air as it heats and cools forms a convection current, leading to air's continual movement as it responds to changes in temperature.
For instance, in our homes, we often experience these changes in air movement. When we use a heater, it warms the air which then decreases in density and rises towards the ceiling. As that occurs, the cooler and denser air on the floor level is drawn upwards due to the displacement of the warmer air, causing a circulation - or convection current. The converse happens when we use an air conditioner or fan - cool air becomes denser and tends to flow down towards the floor level, pushing the warm air upwards.
Learn more about Properties of Air here:https://brainly.com/question/2078132
#SPJ3
What is the scientific term for something that is living and demonstrates the 7 life processes?
A. Thing
B. Ecology
C. Organism
D. Bacterium
Answer:
b
Explanation:
trust me
The water cycle, photosynthesis, nutrient cycling, and soil formation are examples of:
A.) regulating services.
B.) provisioning services.
C.) cultural services.
D.) supporting services.
It seems like the answer would be supporting services.
The water cycle, photosynthesis, nutrient cycling, and soil formation are examples of supporting services in the ecosystem.
Explanation:The water cycle, photosynthesis, nutrient cycling, and soil formation are examples of supporting services. These services are a part of ecological or ecosystem services, which are categorized into four types: regulating services, provisioning services, cultural services, and supporting services. The supporting services are those essential ecological processes that are necessary for the existence and maintenance of other ecosystem services.
In the examples you provided, the water cycle supports the transport and availability of water for life, photosynthesis supports the production of oxygen and food for organisms, nutrient cycling supports the recycling of essential nutrients, and soil formation supports the growth of plants and the retention of water and nutrients.
Learn more about Ecosystem Services here:https://brainly.com/question/12365357
#SPJ3
3)
0.09 moles of sodium sulfate in 12 mL of solution.
Answer:
7.5 M
Explanation:
In order to find a solution's molar concentration, or molarity, you need to determine how many moles of solute, which in your case is sodium sulfate,
Na
2
SO
4
, you get in one liter of solution.
That is how molarity was defined -- the number of moles of solute in one liter of solution.
So, you know that you have
0.090
moles of solute in
12 mL
of solution. Your goal here will be to scale up this solution by using this information as a conversion factor to help you determine the number of moles of solute present in
Need help !!!!! Stuck asap
The answer is:
Hence, the new pressure will be 2.07 atm.
[tex]P_{2}=2.07atm[/tex]
Why?Since we know that the gas is inside of a rigid container, meaning that the volume will be kept constant, we can solve the problem using the Gay-Lussac's Law.
The the Gay-Lussac's Law establishes that when an ideal gas is kept at the same volume, the pressure and the temperature will be proportional.
We need to pay special attention when we are working with the Gay-Lussac's Law since its equaitons works with absolute temperatures (Kelvin ), so, if we are working with relative temperatures such as Celsius degrees or Fahrenheit degrees, we need to convert the temperatures to Kelvin.
We can convert from Celsius degrees to Kelvin using the following formula:
[tex]Temperature(K)=Temperature(C\°)+273[/tex]
So, we have the Gay-Lussac's equation:
[tex]\frac{P_{1}}{T_{1}}=\frac{P_{2}}{T_{2}}[/tex]
Also, we are given the following information:
[tex]T_{1}=30\° \\P_{1}=2atm\\T_{2}=40\°[/tex]
Therefore, converting the temperature to Kelvin, we have:
[tex]T_{1}=30C\°=30+273K=303K\\\\T_{1}=40C\°=40+273K=313K\\[/tex]
Now, calculating we have:
[tex]\frac{P_{1}}{T_{1}}=\frac{P_{2}}{T_{2}}[/tex]
[tex]P_{2}=\frac{P_{1}}{T_{1}}*T_{2}\\\\P_{2}=\frac{2atm}{303K}*313K=2.07atm[/tex]
Hence, the new pressure will be 2.07 atm.
[tex]P_{2}=2.07atm[/tex]
Have a nice day!
Which of the following apply to a solution’s concentration.
(((((((((Select all that apply.))))))))
The physical properties of a solution are not affected by the concentration of the components.
Boiling points and freezing points of solutions change as the concentration of the solute changes.
Moles of solute = (Liters of solution) x (Molarity of solution)
(Initial Concentration)(Initial Volume) = (Final Concentration) (Final Volume)
Concentration affects if an acid is weak or strong.
Answer:
All of them apply according to the exam your are on because they all need concentration to work up the certain chemical
Explanation
The physical properties of a solution are not affected by the concentration of the components.
Boiling points and freezing points of solutions change as the concentration of the solute changes.
Moles of solute = (Liters of solution) x (Molarity of solution)
(Initial Concentration)(Initial Volume) = (Final Concentration) (Final Volume)
Concentration affects if an acid is weak or strong.
Answer : All the given options are applicable for a solution’s concentration.
Explanation :
(1) The physical properties of a solution are not affected by the concentration of the components.
This statement is apply to a solution's concentration. Physical properties can be measured without changing the composition of substance. For example : The boiling point of 2 gram substance and 10 grams of substance will always remain same.
(2) Boiling points and freezing points of solutions change as the concentration of the solute changes.
This statement is apply to a solution's concentration. As we know that the boiling and freezing point of solution depends on the number of moles of solute or concentration of solute. So, as the concentration of solute changes the boiling and freezing point of solution.
(3) Moles of solute = (Liters of solution) x (Molarity of solution)
This statement is apply to a solution's concentration. As we know that the molarity is defined as the number of moles of solute present in one liter of volume of solution.
(4) (Initial Concentration)(Initial Volume) = (Final Concentration) (Final Volume)
This statement is apply to a solution's concentration as per dilution law.
(5) Concentration affects if an acid is weak or strong.
This statement is apply to a solution's concentration. As the concentration of an acid and base is the amount of moles of solute per unit volume. That means if a solution has higher molarity, then the concentration is also higher and vice-versa.
Hence, all the given options are applicable for a solution’s concentration.
How does Arrhenius describe acids and bases?
As defined by Arrhenius:
An Arrhenius acid is a substance that dissociates in water to form hydrogen ions (H+). In other words, an acid increases the concentration of H+ ions in an aqueous solution. This protonation of water yields the hydronium ion (H3O+); in modern times, H+ is used as a shorthand for H3O+ because it is now known that a bare proton (H+) does not exist as a free species in aqueous solution.
An Arrhenius base is a substance that dissociates in water to form hydroxide (OH–) ions. In other words, a base increases the concentration of OH– ions in an aqueous solution.
Hope this helps!
Explanation:
According to Arrhenius concept:
An acid is defined as a substance which donates hydronium ions [tex](H_3O^+)[/tex] in water.
[tex]HA(aq)+H_2O(l)\rightarrow A^-(aq)+H_3O^+(aq)[/tex]
For example: hydrochloric acid , nitric acid etc.
[tex]HCl(aq)+H_2O(l)\rightarrow Cl^-(aq)+H_3O^+(aq)[/tex]
[tex]HNO_3(aq)+H_2O(l)\rightarrow NO_3^{-}(aq)+H_3O^+(aq)[/tex]
A base is defined as a substance which donates hydroxide ions [tex](OH^-)[/tex] when dissolved in water.
[tex]BOH(aq)\rightarrow B^+(aq)+OH^-(aq)[/tex]
For example: sodium hydroxide, calcium hydroxide etc.
[tex]NaOH(aq)\rightarrow Na^+(aq)+OH^-(aq)[/tex]
[tex]Ca(OH)_2(aq)\rightarrow Ca^{2+}(aq)+2OH^-(aq)[/tex]