Mole Ratios 2020
Authored by Ashley Nelon
Chemistry
10th - 12th Grade
NGSS covered
Used 58+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What can be determined from a balanced chemical equation?
Tags
NGSS.HS-PS1-7
NGSS.HS-PS1-4
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
N2 + 3H2 → 2NH3
What is the mole ratio between Nitrogen and Ammonium (NH3) in the above reaction?
1 moles NH3 / 2 moles N2
2 moles NH3 / 1 moles N2
2 moles N2 / 3 moles NH3
1 moles N2 / 3 moles NH3
Tags
NGSS.HS-PS1-7
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe
What is the ratio of moles of Mg to moles Fe?
3mol Mg / 2 mol Fe
2 mol Mg/ 3 mol Fe
1 mol Fe/ 2 mol Fe
3 mol MgO / 2 mol Fe
Tags
NGSS.HS-PS1-7
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2 C2H6 + 7 O2 → 4 CO2 + 6 H2O
Ethane (C2H6) combusts in the above reaction. What is the mole ratio of ethane to oxygen gas?
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2 C2H6 + 7 O2 → 4 CO2 + 6 H2O
Ethane (C2H6) combusts in the above reaction. What is the mole ratio of carbon dioxide to water?
Tags
NGSS.HS-PS1-7
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Where are the numbers for a mole ratio found?
They are part of the chemical formulas for the reactants / products.
They are given in the problem.
They are found on the periodic table for those elements.
They are found as coefficients in the reaction's balanced chemical equation.
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2 C2H6 + 7 O2 → 4 CO2 + 6 H2O
A problem asks how many moles of oxygen gas are needed to react completely with 6 moles of ethane (C2H6). What is the first step in setting up the problem?
Tags
NGSS.HS-PS1-7
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