The complete combustion of acetic acid, HC2H3O2(I) to form water, H2O(I), and CO2(g), at constant pressure releases 871.7 kJ of heat per mol of acetic acid.
Write a balanced thermochemical equation if 5.0g of acetic acid will be used in the reaction.
HC2H3O2(I) + O2 --- H2O(I) + CO2(g) H= -871.7 kJ

Answers

Answer 1

Answer:

HC2H3O2(I) + O2(g) ---> H2O(I) + CO2(g) ΔH= -72.35 kJ

Explanation:

We know that 5.0 g of acetic acid will contain, 5.0g/60 g/mol = 0.083 moles of acetic acid

Now from the reaction equation;

1 mole of acetic acid evolved -871.7 KJ of heat

0.083 moles of acetic acid will evolve 0.083 * -871.7 = -72.35 KJ

For 5.0 g of acetic acid, we can write;

HC2H3O2(I) + O2(g) ---> H2O(I) + CO2(g) ΔH= -72.35 kJ


Related Questions

can someone help answer this? thanks!

if surface tension relies on intermolecular forces, how could you make surface tension decrease?
(think about how and where molecules bind to each other)

Answers

Answer:

We could make the surface tension to decrease by removing and causing a disruption to the intermolecular forces(hydrogen bonds).

Explanation:

To explain this answer, we will consider an experiment whereby a paper clip is made to rest at the top surface of water inside a container/beaker.

First of all, the intermolecular forces present in water are also known as hydrogen bonds.

It's relationship with surface tension is that when there is high surface tension in the water, this high tension will allow the paper clip to rest on top of the hydrogen bonds present at the top surface in between the water molecules.

However, the surface tension will decrease when we remove or cause a disruption to the intermolecular forces (hydrogen bonds).

help I'm giving you a lot of points and do not put random or crazy stuff the real question


You are trying to design a homemade ice pack. As you select the chemicals for this reaction, should you choose an endothermic reaction or an exothermic reaction? Why?

Answers

Answer:

Endothermic

Explanation:

Because Endothermic is cold and exothermic is hot and if you are using an ice pack it would be Endothermic and if you were using something that was hot it would be exothermic

A process in which substances chemically rearrange to form new substances
Molecule
Energy
Organism
Chemical reaction
Matter
Cellular respiration

Answers

Answer:

Chemical reaction

Explanation:

After new substances are formed they can't be reversed to their original state.

TIMED TEST PLEASE HURRY!!! The development of a new experimental method is most likely to change a theory if it makes it possible to

analyze samples when they are frozen.

perform the experiment in a different lab.

obtain and analyze results more quickly.

study a larger sample size than before.

Answers

Answer:

study a larger sample size than before.

Explanation:

Science is evolving day by day and every new experiment is contradict the old experiment, giving new theories.

The advancement in the technology modifying the new experimental methods and it can change a theory if study a larger sample size than before. It is so because new experiment verify and validates larger sample size and evidences can contradict the old theory. Large sample size means more experiments and more validations.

Hence, the correct answer is "study a larger sample size than before."

Answer: is the D

Explanation:

5. Solve the following crossword puzzle.


a. Maximum energy generation in India is done using ........ energy.

b. energy is a renewablesource of
energy.

c.Solar energy can be called.... energy.

e. ......... energy of water in dams is used for generation of electricity.

Answers

Answer:

I think it is b

Explanation:

Since protons (p+) with a positive charge and neutrons (n0) without a charge are located in the nucleus, what is the overall charge of the nucleus portion of an atom: positive, negative, or no charge at all? Explain.

Answers

Answer:

Positive

Explanation:

The nucleus of an atom has a net positive charge  which is balanced by the negative charge of the electrons residing in the orbital of an atom. The reason why the nucleus of an atom is positively charged is because it contains two sub atomic particles;

The protons and neutrons. In terms of charge, the proton is positively charged and the neutron is neutral. This means the neutron does not partake in the charge of the nucleus. Hence the net charge of the nucleus is decided by the protons which are positively charged

If you used .010 moles of baking soda, what mass of carbon dioxide should be produced?

Answers

Answer:

d

Explanation:

The answer to this question is D

Molecules are
close and
barely move
They keep
one shape

Answers

Yes molecules are yes.

Calculate the mass of 4.55x1024 molecules of sucrose

Answers

Answer:

2584 g

Explanation:

The molecular formula for sucrose is C₁₂H₂₂O₁₁, which means its molar mass is 342.3 g/mol.

First we convert molecules into moles by using Avogadro's number:

4.55x10²⁴ molecules ÷ 6.023x10²³ mol/molecules = 7.55 mol

Now we convert moles of sucrose into grams, using its molar mass:

7.55 mol * 342.3 g/mol = 2584 g

Put the following metals in order of reactivity.

Iron, potassium, copper, zinc, lead, calcium, magnesium, sodium, gold



Most reactive



















Least reactive



Complete the equations

metal + oxygen → …………………….

metal + water → ……………………. + …………………….

metal + acid → ……………………. + …………………….

What is formed when magnesium burns in air?

…………………….…………………….…………………….…………………….

What happens when copper is put into a beaker of water?

…………………….…………………….…………………….…………………….

How do you test for hydrogen gas?

…………………….…………………….…………………….…………………….

What is formed when sodium reacts with hydrochloric acid?

…………………….…………………….…………………….…………………….

How should metals more reactive than carbon be extracted from their ores?

…………………….…………………….…………………….…………………….

Why is gold used in jewelry?

…………………….…………………….…………………….…………………….

What is the rule for displacement reactions?

…………………….…………………….…………………….…………………….

Tick which reactions would happen



copper

Magnesium

zinc

copper sulfate







Magnesium

sulfate







Zinc Sulfate









Using the reactions from Q10. Choose 1 reaction you’ve ticked and explain why it happens. Choose 1 reaction you haven’t ticked and explain why it doesn’t happen.

…………………….…………………….…………………….…………………….

…………………….…………………….…………………….…………………….

…………………….…………………….…………………….…………………….

…………………….…………………….…………………….…………………….

Write word and symbol equations for the first reaction from Q11.

…………………….…………………….…………………….…………………….

…………………….…………………….…………………….…………………….

Answers

Answer: copper, zinc, lead, magnesium, potassium, sodium, iron, gold.

Explanation:

Can someone pls help me on this

Answers

Answer:The bottom 3

Explanation:

Beacuse all of these have to do with this subject hope this helps.

Which statement correctly compares electric charge with electric current?
A.
They both require a human to make them.
B. Neither require charged particles.
C. They both require a battery and a bulb
D. They both require a movement of charged particles.

Answers

Answer:

Your answer would be D) They both require a movement of charged particles

Explanation:

In short terms both the charge and the current are made up of charged particles that are always moving, they constantly move to well... stay charged, if they stopped, then the charge would fade until there is nothing left, and if there is nothing left -it means there would be no electricity to use

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The standard unit for measuring mass is the

Answers

Answer:

kilogram (kg)

Explanation:

______and __________ factors can affect an organism’s genetic traits

Answers

Answer:

i think its Environmental and mutagens

Explanation:

What are the two main types of energy?In an illustration, lines of force are drawn around a magnet to illustrate the magnetic

Answers

potential and kinetic

what ions are formed when sodium reacts with fluorine

Answers

Answer:

One example of an ionic bond is the formation of sodium fluoride, NaF, from a sodium atom and a fluorine atom. In this reaction, the sodium atom loses its single valence electron to the fluorine atom, which has just enough space to accept it.

Explanation:

Sodium reacts with fluorine to form sodium fluoride

Na + F₂ --> NaF

This is an ionic bond formation NaF from sodium atom and fluorine atom. In this reaction, the sodium atom loses its single valence electron to the fluorine atom, which has just enough space to accept it.

Bill stands in a swimming pool and notices that the water around his feet is a lot cooler than the water near the surface which process causes this difference in temperature?
1. convection
2. evaporation
3. radiation
4. conduction

Submit Answer​

Answers

Answer:

convection

Explanation:

I think answer should be convection please let me know if it’s correct or not okay thanks bye

Determing Valence Electrons
Use your periodic table to determine the correct number of valence electrons for the elements below
Element
Group Number
Valence
Electrons
Period
Energy Levels
+
Cesium (Cs)
lodine 0
Arsenic (As)
Gallium (Ga)

Answers

Gallium ( Ga ) is the answer

Which elements had only one valence electron?

Answers

lithium, sodium, potassium, rubidium, cesium, and francium

Answer:

sodium has only one valance electron in valence shell

What is genetic variation?

Answers

A genetic variation is a term used to describe a variation in the DNA sequence in our genomes.

HELLPP!!! What is needed in order to write the electron configuration for elements? Choose all that applies.

Answers

Answer:

atomic number and electrons

Explanation:

5. A fireplace fire heating a room on a cold day is an example of what type of heat
transfer? What are the steps of heat transfer?
A. Conduction, fireplace>room
B. Conduction, room>fireplace
C. Radiation, fireplace>room
D. Radiation, room>fireplace

Answers

Answer:

I think the answer is C- radiation

Explanation:

If its not C its A Hope this helps forgive me if i'm wrong :/

Answer: C

Explanation: The fire in the fireplace is giving off heat because it doesn't need a medium to travel through.

Where are the electrons inside an atom?
A.The electrons are in the nucleus of an atom
B.They are arranged in energy levels
C.The electrons are spread equally throughout the atom

Answers

Answer: B.They are arranged in energy levels

Explanation: Electrons orbit around the nucleus of an atom, and are not spread around equally throughout an atom because there are a different amount of electrons that can fit in each energy level or electron shell (both are the same thing). For example the first energy level can hold up to 2 electrons, the second shell can hold up to 8 electrons, the third can hold up to 18, and so on represented by the equation 2(n^2)

PLEASE HELP!! WILL MARK BRAINLIEST

Use the Internet to list five examples of elements with their properties and five examples of compounds with their properties.

Answers

Answer:

here you go

Explanation:

5 elements and properties:

Boron- The chemical properties of boron are more similar to carbon and silicon than elements of its own group, although boron is more electron deficient. Boron has a high affinity for oxygen-forming borates, and reacts with water at temperatures above 100 °C to form boric acid and other boron compounds.

Carbon- As a member of group 14 on the periodic table, it is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. The most common isotope of carbon has 6 protons and 6 neutrons, and has an atomic mass of 12.0107 amu. Its ground state electron configuration is 1s22s22p2.

Nitrogen-  Nitrogen gas (chemical symbol N) is generally inert, nonmetallic, colorless, odorless and tasteless. Its atomic number is 7, and it has an atomic weight of 14.0067. Nitrogen has a density of 1.251 grams/liter at 0 C and a specific gravity of 0.96737, making it slightly lighter than air.

Oxygen- is the air you breath

Nickel- Nickel is a hard silver white metal, which forms cubic crystals. It is malleable, ductile, and has superior strength and corrosion resistance. The metal is a fair conductor of heat and electricity and exhibits magnetic properties below 345°C

5 compounds and properties:

Water - Formula: H2O = Hydrogen2 + Oxygen. ...

Hydrogen Peroxide - Formula: H2O2 = Hydrogen2 + Oxygen2 ...

Salt - Formula: NaCl = Sodium + Chlorine. ...

Baking Soda - Formula: NaHCO3 = Sodium + Hydrogen + Carbon + Oxygen3

Octane - Formula: C8H18 = Carbon8 + Hydrogen18

hope this helps

TOMMY (persistently but a little intimidated by the crowd) It's always that way, in every story I ever read about a ship landing from outer space. —The Monsters Are Due on Maple Street, Rod Serling What scientific fact is Tommy’s theory based on? Meteors can do some crazy things. Spaceships often land on Earth. Technology makes space travel possible. Meteors can move people from planet to planet.

Answers

Answer:

Technology makes space travel possible.

Explanation:

bc the guy above me is wrong I had to guess and I got it right

Answer:

Technology makes space travel possible.

Explanation:

got it right on edge

What might the student have done that caused this
error? List all possible causes.

Answers

Answer:

The capillary tube was too close to the bottom of the beaker.

The ruler may have moved.

Water got into the capillary tube.

The temperature was not allowed to equilibrate in the 2-4 minutes.

Explanation:

what is a similar math problem to the calcium and water equation

Answers

Answer: Calcium is a metal and a typical reaction of a metal with water will be as follows: ... the chemical reaction for calcium and water will be: [Word Equation] Calcium + 48.

Explanation: Please Please mark me as brainliest!

1
1. Inphotosynthesis, plants convert Inwhat type of energy into what other type of energy?
Pls help me

Answers

light energy into chemical energy

How does thermal energy flow between a hot or cold pack and the atmosphere?

Answers

Answer:

Heat is the transfer of energy. During energy transfer, the energy moves from the hotter object to the colder object. This means that the hotter object will cool down and the colder object will warm up. The energy transfer will continue until both objects are at the same temperature.

Explanation:

Was Dalton's Atomic Theory correct or incorrect and why?

Answers

Answer:

The indivisibility of an atom was proved wrong: an atom can be further subdivided into protons, neutrons and electrons. However an atom is the smallest particle that takes part in chemical reactions. ... According to Dalton, atoms of different elements combine in simple whole number ratios to form compounds.

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