Which statement defines calorimetry ?

Answers

Answer 1

Answer: Calorimetry is the measurement of the amount of heat exchanged in a system. It is a science in determining the changes in the energy of specific system. The equipment used for this is called a calorimeter.

Answer 2

Answer:

The field of physics known as calorimetry determines how much heat is transferred during a chemical or physical process.

It requires precisely calculating the heat transport in a system using a calorimeter, a specialist tool. Two substances coming into contact at differing temperatures normally causes heat exchange to occur until thermal equilibrium is attained. The amount of heat transported can be determined by monitoring the temperature change and taking into account the individual heat capacity of the substances involved. Calorimetry has many uses, including figuring out how much energy is in food, researching chemical processes, and looking at the thermal characteristics of various materials. It is necessary to comprehend how energy is transformed in distinct systems.

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Reaction 2 occurs when an excess of 6 M HCI(aq) solution is added to 100. mL of NaOCl(aą) of unknown concentration. If the reaction goes to completion and 0.010 mol of Cl2(g) is produced, then what was the molarity of the NaOCl(aq) solution? (A) 0.0010 M
(B) 0.010 M
(C) 0.10 M
(D) 1.0 M

Answers

The molarity of the NaOCl solution is 0.10M

The correct answer to the question is Option C. 0.10 M

We'll begin by calculating the number of mole of NaOCl required to produce 0.010 mole of Cl₂.This can be obtained as follow:

NaOCl + 2HCl —> Cl₂ + NaCl + H₂O

From the balanced equation above,

1 mole of NaOCl reacted to produce 1 mole of Cl₂.

Therefore

0.010 mole of NaOCl will also react to produce 0.010 mole of Cl₂.

Finally,we shall determine the molarity of the NaOCl solution.

Mole of NaOCl = 0.01 mole

Volume = 100 mL = 100 / 1000 = 0.1 L

Molarity of NaOCl =?

Molarity = mole / Volume

Molarity of NaOCl = 0.01 / 0.1

Molarity of NaOCl = 0.1 M

Therefore, the molarity of the NaOCl solution is 0.1 M

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Answer:

Option C 0.10 M

Explanation:

you are not providing the reaction, but luckily we have data to write the equation. We know that we are taking HCl and NaOCl to produce Cl2, the reaction is as follow:

NaOCl + 2HCl ---------> Cl₂ + NaCl + H₂O

From this reaction, we know that we have excess of acid that is added to 100 mL (0.1 L) of NaOCl, and this produces 0.010 moles of Chlorine.

All we have to do here, is apply stechiometry. We already know that the acid is in excess, so the moles produced would be the moles of the limiting reactant, in this case, the NaOCl.

According to the reaction NaOCl and Cl2 has a mole ratio of 1:1, so the moles of Cl2 would be the same moles that NaOCl lost so:

moles Cl2 = moles NaOCl = 0.010 moles

Then the concentration:

M = 0.010 / 0.1

M = 0.10 M

This is the molarity of NaOCl

What is the process that changes one set of chemicals into another set of chemicals?a. cohesion
b. hydrogen bonding
c. chemical reaction
d. dissolving

Answers

The process that changes one set of chemicals into another set of chemicals is called a chemical reaction. The correct answer is option c.

A chemical reaction is a process in which chemical bonds between atoms and molecules are broken and formed, resulting in the creation of new substances with distinct chemical properties.

In a chemical reaction, the reactants are the starting substances that react with each other, while the products are the new substances that are formed.

For example: When hydrogen gas reacts with oxygen gas in the presence of a spark or flame, a chemical reaction occurs that produces water as a product:

$\rm 2H_2 + O_2 \rightarrow 2H_2O$

Therefore, a chemical reaction is the process of transforming one set of chemicals into another set of chemicals. Option c is the correct answer.

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Answer: a. cohesion

Cohesion would be the process that changes one set of chemicals into another set of chemicals, as the reactants bond to bring the product, aka product(s).

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Which of the following materials is damaged by acid rain?
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The ozone layer absorbs most of the incoming ____ radiation.
-infrared
-X-ray
-ultraviolet
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Thank you very much~!!

Answers

Which of the following materials is damaged by acid rain? marble

The ozone layer absorbs most of the incoming ____ ultraviolet

Which equation represents the reaction of acetic (ethanoic) acid with water? A. CH3COO- + H2O CH3COOH + OH- B. CH3COOH + H2O CH3COO- + H3O+ C. CH3COO- + H2O CH3COO2- + H3O+ D. CH3COOH + H2O CH3COOH2+ + OH-

Answers

"CH3COOH + H2O CH3COO- + H3O+" is the equation among the choices given in the question represents the reaction of acetic (ethanoic) acid with water. The correct option among all the options that are given in the question is the second option or option "B". I hope that the answer has helped you.

Answer:

B. CH3COOH + H2O CH3COO- + H3O+

Explanation: hope this helped :)

If you begin with 1250 grams of N2 and 225 grams of H2 in the reaction that forms ammonia gas (NH3), how much ammonia will be formed? What is the limiting reagent? How much of the reagent is left when the maximum amount of ammonia is formed?(AP Chemistry summer homework packet)

Please help! Thanks. :)

Answers

N₂+3H₂⇒ 2NH₃
m(NH₃)=1250+225*2=1700 grams
N₂ is the limiting reagent.
1250 grams are left when the maximum amount of ammonia is formed.

You have 10 fish,5 drowned,3 came back to many fish do you have now?