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Chapter 9.1 Stoichiometry

Authored by Kim Cruse

Chemistry

10th - 12th Grade

Used 3+ times

Chapter 9.1 Stoichiometry
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The coefficients in a chemical equation represent the

masses in grams of all reactants and products.

relative number of moles of reactants and products.

number of atoms of each element in each compound in a reaction.

number of valence electrons involved in a reaction.

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following would not be studied within the topic of stoichiometry?

the mole ratio of Al to Cl in the compound aluminum chloride

the mass of carbon produced when a known mass of sucrose decomposes

the number of moles of hydrogen that will react with a known quantity of oxygen

the amount of energy required to break the ionic bonds in CaF2

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A balanced chemical equation allows you to determine the

mole ratio of any two substances in the reaction.

energy released in the reaction.

electron configuration of all elements in the reaction.

reaction mechanism involved in the reaction.

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The relative number of moles of hydrogen to moles of oxygen that react to form water represents a(n)

reaction sequence.

bond energy.

mole ratio.

element proportion.

5.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Given the reaction represented by the following unbalanced equation:

N2O + O2 -> NO2

List in order the coefficients that balance the equation. (Separate coefficients by a comma.) **Save this equation for 4 other related questions.

6.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Given the reaction represented by the following unbalanced equation:

N2O + O2 -> NO2

What is the mole ratio of NO2 to O2? **

Balance and save this equation for 4 other related questions.

___ mol NO2:___ mol O2

Only include numbers in the final answer.

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Given the reaction represented by the following unbalanced equation:

N2O + O2 -> NO2

**Balance the equation and save for 4 other related questions.

Twice as many moles of NO2 form as moles of N2O are consumed. True or False?

N2O + O2 -> NO2

True

False

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