
Intro to Stoichiometry Review (2019)
Quiz
•
Chemistry
•
8th - 11th Grade
•
Medium
Standards-aligned
HEATHER WALTON
Used 7+ times
FREE Resource
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30 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which statement is FALSE about this chemical reaction?
2 moles of hydrogen molecules will react with 1 mole of oxygen molecules.
2 grams of hydrogen will react with 1 gram of oxygen.
For every 2 moles of hydrogen molecules that react, 2 moles of water molecules will be produced.
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the mole ratio of Aluminum to Hydrogen chloride in this reaction?
2 Al + 6 HCl → 3 H2 + 2 AlCl3
2 moles Al :6 moles HCl
26.98 moles Al : 36.46 moles HCl
2 moles Al :3 moles HCl
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the percent by mass of calcium in CaF2 ?
24%
49%
51%
65%
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
If the molar mass of Zn3(PO4)2 is 386.17g , what is the percent composition of oxygen in zinc phosphate?
33.15%
16.04%
50.81%
19.68%
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the percent by mass of magnesium in MgO?
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the empirical formula if you have 36.84% nitrogen and 63.16% oxygen?
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
An empirical formula:
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