
Stoichiometry and Mole Ratios

Interactive Video
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Chemistry
•
9th - 10th Grade
•
Hard

Aiden Montgomery
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to balance chemical equations when working with mole ratios?
To ensure the reaction is safe
To find the correct mole ratios between reactants and products
To make the reaction faster
To reduce the amount of reactants needed
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the balanced equation for the combustion of methane (CH4) with oxygen (O2)?
CH4 + 2O2 → CO2 + 2H2O
CH4 + O2 → CO2 + H2O
2CH4 + O2 → 2CO2 + 2H2O
CH4 + O2 → 2CO2 + H2O
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If you start with 0.71 moles of methane, how many moles of water will be produced?
0.71 moles
1.42 moles
0.35 moles
2.84 moles
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mole ratio of methane to water in the balanced equation?
2:1
1:2
2:2
1:1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many moles of oxygen are needed to produce 1.6 moles of carbon dioxide?
2.4 moles
1.6 moles
3.2 moles
0.8 moles
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mole ratio of oxygen to carbon dioxide in the balanced equation?
1:1
1:2
2:1
2:2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can conversion factors be used in stoichiometry problems?
To reduce the number of reactants needed
To increase the speed of the reaction
To cancel out unwanted units and find the desired quantity
To change the units of measurement
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