Stoichiometry Checkpoint Review

Stoichiometry Checkpoint Review

10th Grade

12 Qs

quiz-placeholder

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Stoichiometry Checkpoint Review

Stoichiometry Checkpoint Review

Assessment

Quiz

Chemistry

10th Grade

Practice Problem

Medium

NGSS
HS-PS1-7

Standards-aligned

Created by

Roberto Rodriguez

Used 2+ times

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12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 9 pts

What is the approximate percent composition of potassium in KHCO₃?

19%

24%

39%

61%

2.

MULTIPLE CHOICE QUESTION

2 mins • 9 pts

What is the percent composition of oxygen in Fe₂O₃ (molar mass = 160 g/mol)?

16%

30%

56%

70%

3.

MULTIPLE CHOICE QUESTION

2 mins • 9 pts

How many moles of O₂ contains exactly 3.01 × 10²³ molecules?

0.250 mole

0.500 mole

16.0 moles

32.0 moles

Tags

NGSS.HS-PS1-7

4.

MULTIPLE CHOICE QUESTION

2 mins • 9 pts

What is the approximate total number of atoms in 1.0 mole of lithium?

3.0

6.9

1.0 × 10²³

6.0 × 10²³

Tags

NGSS.HS-PS1-7

5.

DRAG AND DROP QUESTION

2 mins • 8 pts

What is the molar mass of CO₂?

​ (a)   ​ ​ (b)  

44
g/mol
18
37
mol
g
g/M

6.

DRAG AND DROP QUESTION

2 mins • 8 pts

What is the mass for one mole of nitrogen gas? (N2)

(a)   ​ (b)  

g/mol
28
14
g
mol

7.

MULTIPLE CHOICE QUESTION

2 mins • 8 pts

What is a mole in chemistry terms?

Media Image
Media Image
Media Image
Media Image

Tags

NGSS.HS-PS1-7

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