Answer:
Graphics can sometimes convey more information in a brief amount of space than an author can explain in a paragraph.
is Tetracarbon decoxide ionic or covalent?
Answer: covalent bond
Explanation: Tetracarbon Hexahyride is built using covalent bonds
Hope this helps please mark brainlist it would be greatly appreiciated :)
which of the following is a component of a proton?
up quark
neutron
electron
gluon
Answer:
up quark
Explanation:
An atom is the smallest particle of element that can take part in a chemical reaction. It consists of subatomic particles; electrons, neutrons and protons.Electrons are found in the energy levels while protons and neutrons are found in the nucleus.A proton is made up of three parts namely;Two up quarks One down quark, and The gluons The gluons are parts in which the quarks exchange, and this is how the strong nuclear forces works to keen them from getting out.Answer:
up quark
Explanation:
Which of the following is a reactant in anaerobic respiration?
ATP
Glucose
Lactic acid
Oxygen
Answer:
Glucose
Explanation:
There are two types of respiration:
1. Aerobic respiration
2. Anaerobic respiration
Aerobic respiration
It is the breakdown of glucose molecule in the presence of oxygen to yield large amount of energy. Water and carbon dioxide are also produced as a byproduct.
Glucose + oxygen → carbon dioxide + water + 38ATP
Anaerobic Respiration
It is the breakdown of glucose molecule in the absence of oxygen and produce small amount of energy. Alcohol or lactic acid and carbon dioxide are also produced as byproducts.
Glucose→ lactic acid/alcohol + 2ATP + carbon dioxide
This process use respiratory electron transport chain as electron acceptor instead of oxygen. It is mostly occur in prokaryotes. Its main advantage is that it produce energy (ATP) very quickly as compared to aerobic respiration.
Steps involve in anaerobic respiration are:
Glycolysis
Glycolysis is the first step of both aerobic and anaerobic respiration. It involve the breakdown of one glucose molecule into pyruvate and 2ATP.
Fermentation
The second step of anaerobic respiration is fermentation. It involve the fermentation of pyruvate into lactic acid or alcohol depending upon the organism in which it is taking place. There is no ATP produced in this step, however carbon dioxide is released.
What he said^
Ninja in resting pose
-_-
- I I-
< >
-Mr. Anon
What was perhaps the greatest challenge of human space flight?
Answer:
Returning passengers back safely to Earth
Explanation:
Which of these is a chemical property?
boiling point
flammability
density
solubility
Answer:
The second choice, or flammability.
Explanation:
The flammability of something is how easy it is for it to burn or ignite.
Answer:
The Answer in flammability
Explanation:
Both fire and the fire starter are chemicals therefore its B.
write equations to show the chemical processes which occur when the first ionization and the second ionization energies of lithium are measured?
Answer:
First ionization of lithium:
[tex]\text{Li}\;(g)\to \text{Li}^{+} \; (g) + \text{e}^{-}[/tex].
Second ionization of lithium:
[tex]\text{Li}^{+}\;(g) \to\text{Li}^{2+} \;(g) + \text{e}^{-}[/tex].
Explanation:
The ionization energy of an element is the energy required to remove the outermost electron from an atom or ion of the element in gaseous state. (Refer to your textbook for a more precise definition.) Some features of the equation:
Start with a gaseous atom (for the first ionization energy only) or a gaseous ion. Write the gaseous state symbol [tex](g)[/tex] next to any atom or ion in the equation. The product shall contain one gaseous ion and one electron. The charge on the ion shall be the same as the order of the ionization energy. For the second ionization energy, the ion shall carry a charge of +2.Charge shall balance on the two sides of the equation.First Ionization Energy of Li:
The products shall contain a gaseous ion with charge +1 [tex]\text{Li}^{+}\;(g)[/tex] as well as an electron [tex]\text{e}^{-}[/tex]. Charge shall balance on the two sides. There's no net charge on the product side. Neither shall there be a charge on the reactant side. The only reactant shall be a lithium atom which is both gaseous and neutral: [tex]\text{Li}\;(g)[/tex]. Hence the equation: [tex]\text{Li}\;(g) \to \text{Li}^{+}\;(g) + \text{e}^{-}[/tex].Second Ionization Energy of Li:
The product shall contain a gaseous ion with charge +2: [tex]\text{Li}^{2+}\;(g)[/tex] as well as an electron [tex]\text{e}^{-}[/tex].Charge shall balance on the two sides. What's the net charge on the product side? That shall also be the charge on the reactant side. What will be the reactant?The equation for this process is [tex]\text{Li}^{+} \; (g) \to \text{Li}^{2+}\;(g) + \text{e}^{-}[/tex].The first ionization energy of lithium is represented by the equation: Li(g) -> Li+(g) + e-, with an energy of +54.4 eV. The second ionization energy is represented by the equation: Li+(g) -> Li2+(g) + e-, with an energy of 30.6 eV. These equations demonstrate the process of ionization.
Explanation:The ionization energy of an element is the energy required to remove an electron from a gaseous atom or ion. The first ionization energy of lithium is represented by the equation: Li(g) -> Li+(g) + e-, the energy required for this process is +54.4 eV.
The second ionization energy refers to the energy required to remove the second electron. For lithium, the second ionization energy is represented by the equation: Li+(g) -> Li2+(g) + e-, the energy needed for ionizing the second electron is 30.6 eV.
The equations represent the processes which occur when the first ionization and the second ionization energies of lithium are measured.
Learn more about Ionization Energies of Lithium here:https://brainly.com/question/7140225
#SPJ3
Radio waves are ____________ waves
I'm not sure if this is the right one because there are 3 choices haha...
So it's either
1. Sound
2. Mechanical
3. Low frequency
How do the alkali metals differ from the alkaline earth metals?
Answer & Explanation:
The alkali metals are the elements found in the first group of the periodic table.Alkaline earth metals are found in the second group of the periodic table. Alkali metals are Lithium (Li), sodium(Na), potassium (K), Rubidium (Rb), Cesium (Cs) and Francium (Fr).Alkaline earth metals include; Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba) and Radium (Ra).Alkali metals are very reactive and none of these metals do not occur as free metals in nature.Alkaline metals are also do not occur freely in nature and they are also very reactive.For alkali elements, the densities of Lithium and Sodium are less than the density of water. However, the other elements are denser than water. Many of alkali metal compounds (NaCl, KCl, Na2, CO3, NaOH) are commercially very important.Alkaline elements in this group are denser than water.A certain reaction has an equilibrium constant of 3.5 × 108 at 25°C and 6.0 × 10–2 at 500°C. Is the reaction exothermic or endothermic?
Answer:
The reaction is exothermic.
Explanation:
When the temperature changes in a balanced system, it ceases to be in equilibrium because the value of the equilibrium constant is modified. Thus, at a temperature T1 the constant is K1, and at a temperature T2, the constant is K2. The relationship between these magnitudes is given in the so-called Van't Hoff equation.
The Wan't Hoff equation is:
[tex]\frac{lnK1}{lnK2}=-\frac{H}{R} (\frac{1}{T1}-\frac{1}{T2})[/tex]
Where:
ΔH: standard enthalpy of the reaction
R: constant of ideal gases
K1: equilibrium constant at temperature T1
K2: equilibrium constant at temperature T2
The Van't Hoff equation allows us to study how the chemical equilibrium shifts with temperature depending on whether we have an endothermic or exothermic reaction. So if the reaction is exothermic, ΔH <0, increasing the temperature decreases the equilibrium constant and the reaction moves to the left, while if the temperature decreases, the equilibrium constant increases and the equilibrium moves to the right.
Therefore, given the values of the equilibrium constant at different temperatures and observing that it decreases when the temperature rises, the reaction is exothermic.
using the water cycle diagram, match the number with the following; condensation runoff [precipitation and evaporation. once you've identified the process for each number, explain how water moves and changes form in each step (you only need to do this for the 4 basic steps)
Answer:
1. Evaporation
2. Condensation
3. Precipitation
4. Runoff
Explanation:
The water cycle shows how water moves on the earth as it passes through different phases.
Water on land is stored in oceans, rivers and other water bodies. This water coupled with those in plants and animals are turned into vapor through EVAPORATION. Evaporation facilitates the movement of water on the surface into the atmosphere.
In the atmosphere, the vapor condenses on dust particles found up there. The vapors forms a nuclei around the dust particles and water condenses at the saturated vapor pressure. This forms cloud.
As the water collects more and more, gravity forces the water to fall in form of PRECIPITATION. The precipitation can be in form of snow or rainfall.
When precipitation occurs, they move on the surface as SURFACE RUNOFFS. Some of the runoff goes back into oceans and rivers. Others infiltrates into the ground and collects in the ground water pool under the subsurface. Subsurface water can also get into into other water bodies when the water table coincides with the steam level.
The water in these bodies can then go into the cycle again. The sun is the source of energy for this process.
The water cycle consists of four main steps including evaporation/sublimation, condensation/precipitation, subsurface water flow, and surface runoff/snowmelt, representing a continuous movement of water on, above, and below the surface of the Earth.
Explanation:According to the water cycle diagram: 1 corresponds to evaporation/sublimation, where water from the oceans turns into water vapor, due to the sun's energy. 2 represents condensation or precipitation, which takes place when the water vapor cools down and forms clouds, eventually falling as rain or snow. 3 stands for subsurface water flow - the movement of water underground, within the soil, which occurs after the water infiltrates the soil. Lastly, 4 is related to surface runoff/snowmelt - when excess water from rain, meltwater, or other sources flows on the Earth's surface and returns to the oceans completing the cycle.
Learn more about Water Cycle here:https://brainly.com/question/35917024
#SPJ11
The following diagram shows various positions of the moon in its orbit around Earth. The image of the moon shows its phase as seen from Earth.
I NEED HELP ASAP WITH THIS ONE TOO (WILL MARK BRAINIEST AND 10 POINTS)
In which position will one-fourth of the illuminated side of the moon be visible from Earth?
A
B
C
D
Answer:
Position D
Explanation:
One fourth of the Moon will be visible from Earth when the Moon is in position D. The reason why this is the right position is that the Moon will be in a position where the majority of its surface that is lighted by the Sun is facing the Sun. On the other hand, the angle is just right that about one quarter of the lighted part of the Moon is also facing the Earth. This will result in a perception from the Earth's view point that the Moon is lighted at one quarter of its surface.
what do aerosols, the atmospheric particles, consist of?
A. Nitrogen and oxygen
B. Water and carbon dioxide
C. Gas and water vapor
D. Solid and liquid
Answer: Solid and liquid
Explanation:
An aerosol is a suspension of fine solid particles or liquid droplets, in air or another gas.[1] Aerosols can be natural or anthropogenic. Examples of natural aerosols are fog, dust, forest exudates and geyser steam. Examples of anthropogenic aerosols are haze, particulate air pollutants and smoke.[dubious – discuss][1] The liquid or solid particles have diameters typically <1 μm; larger particles with a significant settling speed make the mixture a suspension, but the distinction is not clear-cut. In general conversation, aerosol usually refers to an aerosol spray that delivers a consumer product from a can or similar container. Other technological applications of aerosols include dispersal of pesticides, medical treatment of respiratory illnesses, and convincing technology.[2] Diseases can also spread by means of small droplets in the breath, also called aerosols (or sometimes bioaerosols).[3]
Aerosol science covers generation and removal of aerosols, technological application of aerosols, effects of aerosols on the environment and people, and other topics.
Aerosols, the atmospheric particles, consist of: D. Solid and liquid
Further explanationSuspension is a heterogeneous mixture where the solute particles get suspended throughout the bulk of the solvent, then left floating around freely in the medium.
An aerosol is a suspension of fine solid particles or liquid droplets and it is in air or another gas. An aerosol is a gas containing very small particles of a solid or liquid with particle diameters in the range of [tex]10^-9[/tex] to [tex]10^-4[/tex]m.
Aerosols are come from volcanoes, dust storms, fires, vegetation, sea spray, burning of fossil fuels and land use. Primary aerosols are those particles emitted directly into the atmosphere. It is because the different sources of aerosols mix on the earth's surface. Warming aerosols are include black carbon and dark soot. Cooling aerosols include dust, sulfate particles and sea spray.
Aerosols can influence the Earth's climate in two ways. When the sky is clear (devoid of clouds), aerosols can reflect incoming sunlight back to outer space
Therefore aerosols, the atmospheric particles, consist of: Solid and liquid.
Learn moreLearn more about Aerosols https://brainly.com/question/1635230Learn more about the atmospheric particles https://brainly.com/question/12613495Learn more about Solid and liquid https://brainly.com/question/497940Answer details
Grade: 9
Subject: chemistry
Chapter: aerosols
Keywords: Aerosols, Solid, liquid, Water, the atmospheric particles
if i add 25 ml of water to 135 ml of a 0.25 M NaOH solution what will the molarity of the diluted solution be
Answer:
0.21 M. (2 sig. fig.)
Explanation:
The molarity of a solution is the number of moles of the solute in each liter of the solution. The unit for molarity is M. One M equals to one mole per liter.
How many moles of NaOH in the original solution?
[tex]n = c \cdot V[/tex],
where
[tex]n[/tex] is the number of moles of the solute in the solution.[tex]c[/tex] is the concentration of the solution. [tex]c = 0.25 \;\text{M} = 0.25\;\text{mol}\cdot\textbf{L}^{-1}[/tex] for the initial solution.[tex]V[/tex] is the volume of the solution. For the initial solution, [tex]V = 135\;\textbf{mL} = 0.135\;\textbf{L}[/tex] for the initial solution.[tex]n = c\cdot V = 0.25\;\text{mol}\cdot\textbf{L}^{-1} \times 0.135\;\textbf{L} = 0.03375\;\text{mol}[/tex].
What's the concentration of the diluted solution?
[tex]\displaystyle c = \frac{n}{V}[/tex].
[tex]n[/tex] is the number of solute in the solution. Diluting the solution does not influence the value of [tex]n[/tex]. [tex]n = 0.03375\;\text{mol}[/tex] for the diluted solution.Volume of the diluted solution: [tex]25\;\text{mL} + 135\;\text{mL} = 160\;\textbf{mL} = 0.160\;\textbf{L}[/tex].Concentration of the diluted solution:
[tex]\displaystyle c = \frac{n}{V} = \frac{0.03375\;\text{mol}}{0.160\;\textbf{L}} = 0.021\;\text{mol}\cdot\textbf{L}^{-1} = 0.021\;\text{M}[/tex].
The least significant number in the question comes with 2 sig. fig. Keep more sig. fig. than that in calculations but round the final result to 2 sig. fig. Hence the result: 0.021 M.
Answeri think 0.21 M
Explanation:
HEEEEEEEEEEELP MEEE pls.
Answer:
ummmm have no clue
Explanation:
Which type of severe weather is NOT an intense tropical storm?
A.
hurricane
B.
tornado
C.
typhoon
D.
tropical cyclone
Answer: B. Tornado
Explanation: A tornado is a violent rotating column of air extending from a thunderstorm to the ground. The most violent tornadoes are capable of tremendous destruction with wind speeds of up to 300 mph. They can destroy large buildings, uproot trees and hurl vehicles hundreds of yards. They can also drive straw into trees.
Severe weather that doesn't serve as intense tropical storm is B:
tornado.
Tropical storm can be regarded as organized centre of low pressure which can considered to be experienced over warm tropical oceans.These storms serve as an intermediate stage that gap loosely organized tropical depressions as well as more intense tropical cyclones.The severe type includes typhoon, tropical cyclone and hurricane.Therefore, option B is correct.
Learn more at:
https://brainly.com/question/15368564?referrer=searchResults
For the reactions system 2H2(g) + S2(g) 2H2S(g), a 1.00 liter vessel is found to contain 0.50 moles of H2, 0.020 moles of S2, and 68.5 moles of H2S. Calculate the numerical value of the Keq of this system.
K =
Are the products or reactants favored?
Answer:
K = 9.4 *10^5
The reaction favor product formation
Explanation:
Equilibrium constant of a chemical reaction is the value of its reaction quotient at chemical equilibrium. Also it is defined as the ratio of the product of concentration of products to the product of concentration of reactants each term raised to power equal their stochiometric coefficients.
so, for the reaction,
2H₂ ₍g₎ + S₂ ₍g₎ → 2H₂S ₍g₎The equilibrium constant can be expressed as following:
[tex]K_{eq}=\frac{[H_2S]^2}{H_2]^2\times [S_2]}[/tex]
where concentration of reactants and products is expressed in molarity Molarity=(no of moles/ Volume L)
So,
[H₂] = (0.50 mol / 1 L) = 0.50 M
[S₂] = (0.02 mol / 1 L) = 0.020 M
[H₂S] = (68.5 mol / 1 L) = 68.5 M
∴ K_{eq}=\frac{[68.5]^2}{0.50]^2\times [0.020]}=9.4*10^5
As the value of K is greater than 1, the reaction favor product formation.
Which of the following is a solvent for both polar and nonpolar solutes?
a)water
b)carbon tetrachloride
c)ethanol
d)benzene
Ethanol is the correct answer as it can dissolve both polar and nonpolar solutes due to its polar -OH group and a nonpolar ethyl group.
Among these, ethanol is the solvent that can dissolve both polar and nonpolar substances. Water is a polar solvent and typically dissolves polar or ionic solutes like methanol (CH3OH) and sodium sulfate (Na2SO4), but not nonpolar solutes like octane (C8H18). On the other hand, nonpolar solvents like toluene and hydrocarbon such as heptane (C7H16) would dissolve nonpolar substances like octane (C8H18), but not polar solutes. Ethanol's unique properties allow it to dissolve wide-ranging solutes because it contains a polar -OH group and a nonpolar ethyl group (C2H5-), making it suitable for both polar and nonpolar solutes.
1. Which color is absorbed and which is reflected by the leaves of most plants?
A. Green and violet are reflected; red is absorbed.
B. Red and blue are absorbed; green is reflected.
C. Blue and green are absorbed; red is reflected.
D. Red and violet are reflected; green is absorbed.
D. Red and Violet are reflected, Green is absorbed
Leaves of plants are green because chlorophyll pigments absorb red and blue light and reflect green light. The correct answer is B - red and blue are absorbed, and green is reflected.
The color absorbed and reflected by the leaves of most plants can be understood by examining the pigments chlorophyll a and chlorophyll b, which absorb light for photosynthesis. Chlorophyll a absorbs light primarily in the blue-violet and red regions, and chlorophyll b absorbs red-blue light. Both pigments reflect green light, which is why leaves appear green to us. Addition to this, there are carotenoids that absorb light in the blue-green and violet region and reflect longer yellow, red, and orange wavelengths.
The correct answer to the question is B. Red and blue are absorbed; green is reflected. This is because chlorophyll a and b absorb light at blue and red wavelengths, which are essential for photosynthesis, and reflect the green wavelengths that they do not absorb.
whats the truth to coloring your hair with bleach? list 10 facts
Using hydrogen peroxide to bleach hair is affordable and can give great results but only if used well. The following steps will help you bleach your hair safely with hydrogen peroxide: ... Shampoo, rinse and dry your hair. Apply the conditioner; let it stay for a few minutes before you comb it through.
Answer:
1. It's affordable
2. You can control the color
3. You'll be popular (at least in my school you will)
4. It can ruin your hair
5. Spillage on your skin
6. I don't think it's toxic
Explanation:
This is all I can come up with. If I'm able to think of more, I'll edit this.
Which material is likely to slow the flow of electric charges the most? Explain
Answer:
The material that would most likely slow the flow of electricity is plastic.
Explanation:
Plastic is a conductor. A conductor is something that stop or slows down the flow of electricity.
Which of these definitions could be used to define SO2 as a base? Check all that apply. Arrhenius concept Bronsted-Lowry concept Lewis concept
Answer:
Lewis concept
Explanation:
edg
Lewis concept could be used to define SO[tex]_2[/tex] as a base. Inorganic chemical sulfur dioxide (SO[tex]_2[/tex]) is a heavy, colorless gas.
What is sulfur dioxide?Inorganic chemical sulfur dioxide (SO2) is a heavy, colorless gas that is very toxic. It is created in enormous amounts during the transitional stages of the production of sulfuric acid. The stench of sulfur dioxide is as strong and unpleasant as that of a freshly struck match.
Sulfur dioxide, which naturally occurs as volcanic gases and also in solution inside the waters of certain warm springs, is often made industrially by burning sulfur or other sulfur-containing compounds like iron pyrite and copper pyrite in air or oxygen. Lewis concept could be used to define SO[tex]_2[/tex] as a base.
Therefore, lewis concept could be used to define SO[tex]_2[/tex] as a base.
To learn more about sulfur dioxide, here:
https://brainly.com/question/17021671
#SPJ6
What is the guiding formula for combustion reactions
Answer:
Explanation: so a combustion occurs when we react a substance with oxygen .you commonly call this "burning'' .therefore combustion will always include oxygen in the equation and the product will include carbon dioxide and give off water vapours
Therefore the general equation for a complete combustion reaction would be
Fuel + O2 ------ CO2 + H2O
When a solution of sodium carbonate is added to a solution of aluminum chloride what type of reaction
Answer:
[tex]\boxed{ \text{A double displacement reaction} }[/tex]
Explanation:
In a double displacement reaction, the metal cations change partners with the anions.
3Na₂CO₃(aq) + 2AlCl₃(aq) ⟶ 6NaCl(aq) + Al₂(CO₃)₃(s)
This is also a precipitation reaction, because the aluminium carbonate is insoluble and precipitates from solution.
This gas law works only if temperature is recorded in ———— units
Answer:
Kelvin
Explanation:
Gas laws re the laws that relates properties of gases such as pressure, temperature and volume at different conditions.Gas laws includes, Boyle's law, Charles law, grahams law and pressure law among others. Temperature is one of the quantity of gases explained by gas laws. For gas laws to work, temperature should always be in Kelvin. Therefore, when given temperature in degrees, it is converted to Kelvin by adding 273, that is °C + 273 = K.Final answer:
Charles's law requires temperatures to be in Kelvin, the absolute temperature scale, to accurately describe the relationship between a gas's volume and its temperature at constant pressure.
Explanation:
This gas law works only if the temperature is recorded in Kelvin units. Specifically, the gas law referred to here is Charles's law, which establishes a direct relationship between the volume of a gas and its temperature, given constant pressure and amount of gas. Kelvin is the absolute temperature scale used in this context because it starts at absolute zero, the theoretical point at which a gas would have no volume. To convert Celsius to Kelvin, the formula K = °C + 273 is used, ensuring that temperatures are in the appropriate scale for these calculations. Charles's law, along with others like Boyle's law, forms the foundation of our understanding of gas behavior under various conditions.
Is the equation below balanced? Explain your answer.
Zn(OH)2 + NaOH → Na2ZnO2 + H2O
Answer:
No, it is not balanced.
The balanced equation is: Zn(OH)₂ + 2NaOH → Na₂ZnO₂ + 2H₂O.
Explanation:
To balance the equation, you should apply the law of conservation of mass for the equations.The law of conservation of mass states that the no. of each atom is equal in both sides (reactants and products).For the given equation: Zn(OH)₂ + NaOH → Na₂ZnO₂ + H₂O.The no. of Na atoms in reactants side is 1 but in products side is 2.
The no. of H atoms in reactants side is 3 but in product side is 2.
So, the equation is not balanced.
The balanced equation is:
Zn(OH)₂ + 2NaOH → Na₂ZnO₂ + 2H₂O.
The no. of all atoms is the same in both of reactants and products side.
Zn (1), O (4), H (4), and Na (2).
What is the term for an atom with an unequal number of protons and electrons?
Answer: It is called an ion.
Explanation: When an atom has an unequal amount of protons and electrons, it can form an attraction with another.
More electrons- Negative ion (ANION)
More protons- Positive ion
Equal amount- Neutral
Good luck, hope this helps!
Need help !!!!! ASAP
The answer is:
The new volume will be 1 L.
[tex]V_{2}=1L[/tex]
Why?To solve the problem, since we are given the volume and the first and the second pressure, to calculate the new volume, we need to assume that the temperature is constant.
To solve this problem, we need to use Boyle's Law. Boyle's Law establishes when the temperature is kept constant, the pressure and the volume will be proportional.
Boyle's Law equation is:
[tex]P_{1}V_{1}=P_{2}V_{2}[/tex]
So, we are given the information:
[tex]V_{1}=2L\\P_{1}=50kPa\\P_{2}=100kPa[/tex]
Then, isolating the new volume and substituting into the equation, we have:
[tex]P_{1}V_{1}=P_{2}V_{2}[/tex]
[tex]V_{2}=\frac{P_{1}V_{1}}{P_{2}}[/tex]
[tex]V_{2}=\frac{50kPa*2L}{100kPa}=1L[/tex]
Hence, the new volume will be 1 L.
[tex]V_{2}=1L[/tex]
Have a nice day!
Identify the missing coefficient in the balanced equation and classify the type of reaction.
Mg(OH)2 + H2SO4 ⟶ MgSO4 + _____H2O
1; Combustion
1; Neutralization
2; Combustion
2; NeutralizationIdentify the missing coefficient in the balanced equation and classify the type of reaction.
Mg(OH)2 + H2SO4 ⟶ MgSO4 + _____H2O
1; Combustion
1; Neutralization
2; Combustion
2; Neutralization
Answer:
The missing coefficient is 2
Neutralization
Explanation:
Mg(OH)₂ + H₂SO₄ ⟶ MgSO₄ + _____H₂O
Let us use alphabets a,b, c and d to represent the coefficients of the compounds in the given equation:
aMg(OH)₂ + bH₂SO₄ ⟶ cMgSO₄ + ___d__H₂O
In balancing chemical equations, we must bear in mind that they must obey the law of conservation of mass. We can use two approach in balancing a reaction.
We can inspect the individual atoms to check if they are balanced. We can also do this by using a simple mathematical method.
For the given reaction:
aMg(OH)₂ + bH₂SO₄ ⟶ cMgSO₄ + ___d__H₂O
For Mg:
a = c (i)
For O:
2a + 4b = 4c + d (ii)
For H:
2a + 2b = 2d (iii)
For S:
b = c (iv)
If a = 1, then c = 1, b = 1
we can then use either equation (ii) or (iii) to solve for the unknown "d":
2a + 4b = 4c + d
Making the d the subject of the equation:
d = 2a + 4b - 4c
d = 2(1) + 4(1) - 4(1)
d = 2 + 4 - 4
d = 2
The missing coefficient is 2 and the complete equation is given as:
Mg(OH)₂ + H₂SO₄ ⟶ MgSO₄ + 2H₂O
The reaction is a neutralization process. In neutralization, an acid and a base react together to produce salt and water. As we can see, Mg(OH)₂ combines with H₂SO₄ to produce salt and water.
The balanced equation is Mg(OH)₂ + H₂SO₄ ⟶ MgSO₄ + 2H₂O. The reaction is a neutralization reaction. Therefore, the correct option is option B.
An equation per a chemical reaction is said to be balanced if both the reactants or the products have the same number of atoms and total charge for each component of the reaction. In other words, each side of the reaction have an equal balance of mass and charge. It is typical to balance chemical formulas for both mass plus charge in aqueous solutions. Equal numbers and types of atoms are produced on both halves of the equation when balancing for mass.
aMg(OH)₂ + bH₂SO₄ ⟶ cMgSO₄ + dH₂O
For Mg
a = c
For O
2a + 4b = 4c + d
For H
2a + 2b = 2d
For S
b = c
If a = 1, then c = 1, b = 1
2a + 4b = 4c + d
d = 2a + 4b - 4c
d = 2(1) + 4(1) - 4(1)
d = 2 + 4 - 4
d = 2
the balanced equation is Mg(OH)₂ + H₂SO₄ ⟶ MgSO₄ + 2H₂O
The reaction is a neutralization reaction
Therefore, the correct option is option B.
To know more about balanced equation, here:
https://brainly.com/question/31242898
#SPJ6
How many grams of H2 will be produced from 12 grams of Mg according to the following equation?
Mg+2HCL—> MgCl2 + H2
Answer:
0.98 g of H₂
Explanation:
the balanced equation for the reaction is
Mg + 2HCl ---> MgCl₂ + H₂
molar ratio of Mg to H₂ is 1:1
number of Mg moles reacted = 12 g/ 24.3 g/mol = 0.49 mol
according to molar ratio
when 1 mol of Mg reacts 1 mol of H₂ is formed
therefore when 0.49 mol of Mg reacts - 0.49 mol of H₂ forms
therefore mass of H₂ formed = 0.49 mol x 2 g/mol = 0.98 g
mass of H₂ formed is 0.98 g
Approximately 0.988 grams of H2 will be produced from 12 grams of Mg according to the equation provided. This is calculated by first converting the mass of Mg to moles, then using the stoichiometric relationship to find the moles of H2, and finally converting moles of H2 back to grams.
Explanation:To solve this problem, you need to know that in the balanced chemical equation, the coefficients of the reactants and the products represent the mole ratios in which they react and form. In the provided equation, 'Mg + 2HCl → MgCl2 + H2', there is a 1:1 ratio between Mg and H2. So, we first convert grams of Mg into moles using its molar mass. The molar mass of Mg is approximately 24.305 grams per mole. Therefore, the amount of moles of Mg we have is 12g (amount given) divided by 24.305g/mol (molar mass of Mg) which is approximately 0.494 moles of Mg.
Since Mg and H2 are in a 1:1 ratio, we also have approximately 0.494 moles of H2. To convert the moles of H2 to grams, we multiply by its molar mass (about 2 grams per mole). So, the mass of H2 produced is 0.494 moles times 2g/mol which equals approximately 0.988 grams of H2.
Learn more about Stoichiometry here:https://brainly.com/question/30218216
#SPJ11
Can anyone help me please?
Answer:
question 1:
The right choice is → c. KNO₃
question 2:
The right choice is → c. 784 mm Hg
Explanation:
===============================================================
question 1:
From the figure, the solubility of the different salts at 90 °C is:
NaCl:
It is 40 g per 100 g water.
KBr:
It is 100 g per 100 g water.
KNO₃:
It is about 240 g per 100 g water.
NaClO₃:
It is about 220 g per 100 g water.
∴ The most soluble salt in water at 90°C is KNO₃.
So, the right choice is
→ c. KNO₃
===============================================================
question 2:
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 P and V:
P₁ * V₁= P₂ * V₂
from the given data :
P₁ = 3060 mm Hg
V₁ = 0.520 L.
V₂ = 2.03 L.
∴ P₂ = [P₁ * V₁] / V₂ = [3060 mm Hg * 0.520 L] / 2.03 L = 783.84 mm Hg
≅ 784 mm Hg
So, the right choice is
→ c. 784 mm Hg
===============================================================