Mass-mol-percent-stoichiometry exam

Mass-mol-percent-stoichiometry exam

10th Grade

14 Qs

quiz-placeholder

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Mass-mol-percent-stoichiometry exam

Mass-mol-percent-stoichiometry exam

Assessment

Quiz

Chemistry

10th Grade

Medium

NGSS
HS-PS1-7, HS-PS1-2, MS-PS1-1

+2

Standards-aligned

Created by

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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