3. Classify each reaction as exothermic or endothermic. (4 marks)
a. Energy + SO2(g)  S(g) + O2(g) _________________________________
b. Draw a potential energy diagram for the reaction above:

Answers

Answer 1

Energy + SO2(g) -----> S(g) + O2(g) is an edothermic reaction owing to te fact that energy is a reactant in the equation.

What is an endothermic reaction?

An endothermic reaction is one in  wioch energy is supplied to the system in order to enable the breakdown of bonds. Hence, the reaction vessel feels cool as energy is withdrawn from the surroundings.

The reaction;  Energy + SO2(g) -----> S(g) + O2(g) is an edothermic reaction since energy is a reactant in the equation.

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Related Questions

An atom that has 84 protons and 86 neutrons undergoes a reaction. At the end of the reaction, it has 82 protons and 84 neutrons. What happened to the atom? It accepted radiation in a chemical reaction. It donated neutrons to another atom in a chemical reaction. It emitted an alpha particle in a nuclear reaction. It released a beta particle in a nuclear reaction.

Answers

Answer:

C

Explanation:

It denotes a loss of 2 protons and 2 neutrons for the atom. As a result, the atom released an alpha particle, which is composed of two protons and two neutrons, hence option C is correct.

What is an alpha particle?

The structure of alpha particles, also known as alpha rays or alpha radiation, is similar to that of the helium-4 nucleus and is made up of two protons and two neutrons bonded together.

They often result from the alpha decay process, although they can also result from other processes.

If an atom has 84 protons and 86 neutrons, after the reaction, the atom has 82 protons and 84 neutrons, it suggests that the atom has lost 2 protons and 2 neutrons.

Therefore, the atom emitted an alpha particle in a nuclear reaction, hence option C is correct.

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Solid calcium carbonate reacts with hydrochloric acid, forming aqueous calcium chloride, carbon dioxide
gas, liquid water

help balance

Answers

Answer:

When hydrochloric acid comes into contact with calcium carbonate, the following chemical reaction ensues: CaCO3 + 2HCl → CaCl + CO2 + H2O, which provides acid neutralization alongside the formation of byproducts

Answer:

C) liquid

Explanation:

edge 2023

the thermal energy of the higher-temperature object as does the temperature?

Answers

Answer:

Temperature is the average kinetic energy of particles of an object. Warmer objects have faster particles and higher temperatures. If two objects have the same mass, the object with the higher temperature has greater thermal energy. Temperature is measured with a thermometer.

HELP ME ASAP!

what are some acidic experiments and what information will the experinments provide? And how is it important to do those exerinement?

Answers

Answer:

The pH scale measures whether there is more hydronium or hydroxide in a solution. In other words, it tells us how basic or acidic the solution is. A lower pH means something is more acidic, also known as a stronger acid. A higher pH means it is more alkaline or a stronger base.

Which weather condition is NOT associated with warm fronts??

Answers

Answer:

A Winter storm usually does not come with a warm fronthey warm front.

Explanation:

When the front passes over an area it means to change in the weather. Many. Many friends cause weather events such as rain thunderstorms gusty winds tornadoes and hurricanes.

Can someone help me explain three features that make Lake Baikal one of the most unique lakes in the world.

Answers

Explanation:

1,it's crystal clear water and unique wild life.

2,It is home to many unique species animals and plants.

3, It's sediment have not been scoured by overriding continental ice sheet

Which conditions will increase the rate of a chemical reaction?.

Answers

Answer:

temperatures

enzyme activity

10 points get it right ADVPH

Answers

Answer:

Advanced Pharmaceutics Inc

Explanation:

Advanced Pharmaceutics Inc

somehow I know this acroynom

" The use of insecticide is not an interest but an obligation". justify the statement​

Answers

Answer:

Insecticides are not good for health. Their use is harmful to other animals, birds and humans. But, without their use, it is not possible to grow the required amount of food. So, "the use of insecticide is not an interest, but an obligation".

Helium is most likely to behave as an ideal gas when its under what?

Answers

Answer:

Low pressure and high temperature :)

Have an amazing day!!

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Water’s molar mass is 18.01 g/mol. the molar mass of glycerol is 92.09 g/mol. at 25°c, glycerol is more viscous than water. which substance has the stronger intermolecular attraction? glycerol because it has a larger molar mass glycerol because it is more viscous and has a larger molar mass water because it has a lower molar mass water because it is less viscous and has a lower molar mass

Answers

Glycerol has the stronger intermolecular attraction because it is more viscous and has a larger molar mass.

What is Viscosity?

This is the ability of substances to resist flow and is common among fluids such as air and liquid.

Glycerol however has a stronger intermolecular attraction because it is more viscous and has a larger molar mass because they have a direct relationship.

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Answer:

A-glycerol because it has a larger molar mass

Explanation:

Edge 2022 :)

Which phrase describes a dipole moment? (1 point)
the separation of positive and negative charges

the vibration of a molecule

the imbalance of positive and negative charges

the releasing of energy from a molecule

Which statement best summarizes the presence of greenhouse gases in the atmosphere? (1 point)

The atmosphere is mostly non-greenhouse gases, so the small amount of greenhouse gases have little impact on climate

The atmosphere has recently changed and is mostly greenhouse gases, but they have little impact on climate

The atmosphere is mostly non-greenhouse gases, but the small amount of greenhouse gases have a large impact on climate

The atmosphere has recently changed and is mostly greenhouse gases, which have a large impact on climate

Which observed consequence is due to increased production of greenhouse gases? (1 point)

more glaciers

global cooling

melted ice caps

fewer floods

Are greenhouse gases and the greenhouse effect ever beneficial? Why or why not? (1 point)

No, greenhouse gases are a result of air pollution, which is detrimental to the environment.

Yes, industries need to consume greenhouse gases to help people keep their standard of living

No, too many greenhouse gases cause the planet to retain too much heat.

Yes, the greenhouse effect keeps the planet warm enough to support life.

Which molecule acts as a greenhouse gas? (1 point)

nitric oxide (NO)

oxygen (0₂)

nitrous oxide (N₂O)

nitrogen (N₂)​

Answers

Answer:

1. the imbalance of positive and negative charges.

Explanation

The electric dipole moment is a measure of the separation of positive and negative electrical charges within a system, that is, a measure of the system's overall polarity.

2.The atmosphere has recently changed and is mostly greenhouse gases, which have a large impact on climate

Explanation.

They cause climate change by trapping heat, and they also contribute to respiratory disease from smog and air pollution. Extreme weather, food supply disruptions, and increased wildfires are other effects of climate change caused by greenhouse gases.

3.melted ice caps

explanation

A stronger greenhouse effect will warm the ocean and partially melt glaciers and ice sheets, increasing sea level. Ocean water also will expand if it warms overexcessively.

4.Yes, the greenhouse effect keeps the planet warm enough to support life.

Explanation

The greenhouse effect is a good thing. It warms the planet to its comfortable average of 59 degrees Fahrenheit (15 degrees Celsius) and keeps life on earth, well, livable. Without it the world would be a frozen, uninhabitable place, more like Mars.

5.nitrous oxide.

Explanation

There are several different types of greenhouse gases. The major ones are carbon dioxide, water vapor, methane, and nitrous oxide. These gas molecules all are made of three or more atoms. The atoms are held together loosely enough that they vibrate when they absorb heat.

The phrase which  describes a dipole moment is the separation of positive and negative charges,the  statement best summarizes the presence of greenhouse gases in the atmosphere , the atmosphere is mostly non-greenhouse gases, but the small amount of greenhouse gases in an ecosystem have a large impact on climate.

What is an ecosystem?

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .The more glaciers is the consequence is due to increased production of greenhouse gases.The greenhouse effect keeps the planet warm enough to support life. Nitrous oxide molecule acts as a greenhouse gas.

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Which compound below will readily react with a solution of bromine consisting of 48% hydrobromic acid and 30% hydrogen peroxide?

Answers

Answer:

cyclohexene I think that's the answer

Which type of fuel can only be used in certain geographic areas?
O A. Nuclear
O B. Biomass
O C. Coal
O D. Wind

Answers

Answer:

A. Nuclear

Explanation:

This is because it could cause severe environmental damage in areas inhabited by the public

Please mark brainliest

Answer:

A) Nuculear

Explanation:

Nuclear powerplants are danguorous for the ecosystem and incase of an exsplosion nuclear is the hardest to recover from. Especially if you know the story about Chernobyl blow up. many animals began to grow diffrent mutations and evryone had to evacuate from having desieses and mutations.

Hoped this helped...

2 H2 + O2 = 2H2O You have 20 grams of H, what's the mass of water?

Answers

Answer:

2H2 + O2 —-> 2H2O

The mole ratio of H2 to H2O is 2 : 2 = 1:1

4 moles of H2 = 4 moles of H2O

Moles of H20 = 4mol

Molar mass of H2O = 18g/mol

Mass = moles X Molar mass

= 4mol x 18g/mol

= 72g

Mass of H2O is 72g

What is the molarity of a solution that has 26 moles of nacl in 2. 7 l of water?.

Answers

The molarity of a solution that has 26 moles of NaCl in 2.7L of water is 9.63M.

How to calculate molarity?

The molarity of a solution can be calculated by dividing the number of moles of the solute by the volume of the solution as follows:

Molarity = no of moles ÷ volume

According to this question, a solution has 26 moles of NaCl in 2. 7 l of water. The molarity is as follows:

Molarity = 26mol ÷ 2.7L

Molarity = 9.6M.

Therefore, the molarity of a solution that has 26 moles of NaCl in 2.7L of water is 9.63M.

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Summarize: If you know the RGB values of two colors of light, how could you calculate the RGB value of a mixture of the two colors? _______________________________________
_________________________________________________________________________

Answers

RGB values are a combination of three different numerical values which represent Red Green and Blue which range from 0 to 255. When combining two separate colors with RGB values you would simply need to add each of these numerical values together to form an entirely new RGB value. For example,
(105, 200, 0) + (203, 30, 186) = (255, 230, 186)
You can see in the example above that every number in the first color is added to the number in the same position within the second color. If the addition of two numbers goes above 255 then the value maxes out at 255 and stays as is.

please help I'm stuck on this!
What effect does sunlight have on CO2 molecules?

Answers

The Sun! The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas.

Answer:

Carbon Dioxide is not affected by sunlight. But the radiation changes direction when it hits a carbon dioxide molecule

Explanation:

Which additional product balances the reaction H2SO4 + 2NaOH → Na2SO4 + ________?

2H2O
2OH
H2O2
H3O

Answers

Answer:

2H2O

It's a double displacement reaction

It is H3O for the balance

Please help with this answer!

Answers

[tex]\qquad\qquad\huge\underline{{\sf Answer}}♨[/tex]

The Correct choice is : D

if temperature is held constant, then they have same average kinetic Energy because there's no change in energy caused by transfer of heat or something.

According to the forces of attraction, if temperature is constant the particles have the same average kinetic energy.

What are forces of attraction?

Forces of attraction is defined as  a force by  means of which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in  case of gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as  the melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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In order to make a covalent bond, the orbitals on each atom in the bond must overlap.

Answers

Answer:

true

Explanation:

Covalent bonds are formed through the overlap of half-filled valence orbitals. Because of the overlapping, it is most probable that electrons are located within the region of the bond.

In order to make a covalent bond, the orbitals on each atom in the bond must overlap. Therefore, the given statement is true.

What is covalent bond?

A covalent bond is an electron exchange usually results in the production of electron pairs between atoms. These electron couples are referred to as bonding pairs as well as sharing pairs. Covalent bonding seems to be the permanent equilibrium of atoms' forces of attraction versus attraction when atoms share electrons.

Because to electron sharing, each atom in a number of molecules can achieve the corresponding amount of the valence shell, resulting inside a stable electronic configuration. In organic chemistry, covalent bonds are far more common than ionic ones. In order to make a covalent bond, the orbitals on each atom in the bond must overlap.

Therefore, the given statement is true.

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how many moles of H2 would be required to produce 37.0 moles of water?

Answers

Hii there !

The reaction accompanying production of water in this case would be -

[tex]\green{ \underline { \boxed{ \sf{H_2+ \frac{1}{2}O_2\longrightarrow H_2O}}}}[/tex]

Thus ,by observing the reaction, we can conclude that 1 mole of Hydrogen (H[tex]_2[/tex])react with 1/2 mole of oxygen(O[tex]_2[/tex])to produce 1 mole of water (H[tex]_2[/tex]O)

[tex]\implies[/tex]Therefore, 37.0 moles of hydrogen(H[tex]_2[/tex]) will be required to produce 37.0 moles of water.

Hope it helps.

How many liter are in 55.5 grams of neon?

Answers

MolesofAr(n)= given mass/ molar mass of neon= 55.5/20.17=2.75moles

Volume of the gas = 2.75moles x 22.4L=61.63L

The answer to the question is-61.63L

A sample of no2 occupies 16,500 ml at stp. How many no2 molecules are in the sample?.

Answers

here it is! mL to Liters to moles to molecules

According to Avogadro's law equal volume of all gases at the same temperature and pressure contain equal number of molecules. At STP one mole of any gas behaving ideally occupies a volume of 22.414 L.

What is molar volume?

The volume occupied by one mole of a substance at a given temperature and pressure is defined as the molar volume at that temperature and pressure. The value of molar volume of an ideal gas at STP is important in stoichiometric calculations.

At STP, the number of molecules of a gas is given as:

Number of molecules of a gas (N) = V₀ in L /  22.414 × 6.022 × 10²³

Here  V₀ in L = 16500 = 16.5 L

N =  16.5 / 22.414  × 6.022 × 10²³

N = 4.433 × 10²³

Thus the number of molecules present is 4.432 × 10²³.

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Joseph divides 8.64 by 2.0. How many significant figures should his answer have?

Answers

Answer:

2 significant figures

Good luck with your work! :)

12. Which is true of this cell as the redox reaction is
taking place?
1) The mass of Al electrode will increase, and
the mass of Ni electrode will decrease.
2) The mass of Al electrode will decrease, and
the mass of Ni electrode will increase.
3) The mass of Al electrode will increase, and the
mass of Ni electrode will remain the same.
4) The mass of Al electrode will remain the same,
and the mass of Ni electrode will increase.
Conuri

Answers

I think the answer is 4

What is the temperature change if 400 J of energy is added to 10 grams of water

A) 40 degrees Celsius
B) 1 degrees Celsius
C) 100 degrees Celsius
D) 10 degrees Celsius

Answers

The temperature change if 400 J of energy is added to 10 grams of water is 9.57°C.

How to calculate temperature change?

The temperature change of a calorimeter can be calculated using the following expression:

E = mc∆T

Where;

E = energy in joulesm = massc = specific heat capacity = 4.18J/g°C∆T = change in temperature

400 = 10 × 4.18 × ∆T

400 = 41.8∆T

∆T = 400/41.8

∆T = 9.57°C

Therefore, the temperature change if 400 J of energy is added to 10 grams of water is 9.57°C.

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what is the result of cell division that includes mitosis?
A. new cells with different chromosomes
B. four cells with new chromosomes
C. two identical new cells
D. one genetically different cell

Answers

Answer:

I think C is the answer

Explanation:

because Mitosis results in two identical daughter cells......

Which of the following is not a suggested strategy for treating or preventing a communicable disease?

Get vaccinated to prevent infection from a virus.
Receive a vaccine while you are ill from a virus.
Get tested for a suspected infectious disease.
Use hand sanitizer if soap isn't available.

Answers

The strategy that is not a suggested way of treating or preventing a communicable disease is to receive a vaccine while you are ill from a virus.

Treatment and prevention of communicable disease

A communicable disease is a type of disease that can spread from one person to another in the following ways:

contact with blood and bodily fluids;

breathing in an airborne virus, or

being bitten by an insect.

There are various ways to prevent the spread of communicable diseases which include:

Immunization against infectious diseases,

washing of hands regularly or the use of hand sanitisers if soap is not available.

Get tested for a suspected infectious disease

To receive a vaccine while ill from a virus is not advisable because there may be chances of spreading your illness to health care workers who are administering the vaccine.

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. If 3 moles of calcium reacts with 3 moles of oxygen, then a Which substance is the limiting reactant? b How many moles of calcium oxide are formed?​

Answers

Let's see the balanced equation

[tex]\\ \rm\Rrightarrow 2Ca+O_2\longrightarrow 2CaO[/tex]

Hence

As moles are equal given

Ca should be the limiting reagent

2mol Ca produces 2 mol CaO3mol Ca produces 3mol CaO
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