Mass-mol-percent-stoichiometry exam

Quiz
•
Chemistry
•
10th Grade
•
Medium
+2
Standards-aligned
Daniel Krall
Used 11+ times
FREE Resource
14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar mass of ammonium chloride? Masses-N=14.007, H=1.0079, and Cl=35.453
53.49 grams/mol
156.8 grams/mol
101.9 grams/mol
50.46 grams/mol
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the gram formula mass of Al2(SO4)3? Masses-Al=26.982, S=32.065, O=15.999
262.14 grams/mol
342.14 grams/mol
450.06 grams/mol
197.96 grams/mol
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mass % of carbon in dimethylsulfoxide C2H6SO?
20.6 %
30.7 %
7.74 %
60.0 %
79.8 %
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the reaction given below, if 12 moles of aluminum oxide are consumed, how many moles of oxygen gas are produced? 2 Al2O3 --> 4 Al + 3 O2
3 mols
4 mols
6 mols
12 mols
18 mols
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the reaction below, 8.0 g of H2 react with 9.0 g of O2. Which of the following statements is true? 2 H2 + O2 --> 2 H2O
The equation is not balanced.
The H2 is the limiting reactant.
.The O2 is the limiting reactant.
2.0 moles of H2O would be produced.
36 grams of H2O would be produced.
Tags
NGSS.HS-PS1-7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If 70.9 g of chlorine reacts with sufficient cesium to produce cesium chloride, what is the theoretical yield? 2 Cs + Cl2 -->2 CsCl
70.9 grams
132.9 grams
146 grams
337 grams
285 grams
Tags
NGSS.HS-PS1-7
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many moles of Fe2O3 are in 79.85 g Fe₂O₃?
0.50 mols
1.0 mols
0.25 mols
0.10 mols
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