Unit 9: The Mole

Unit 9: The Mole

10th - 12th Grade

18 Qs

quiz-placeholder

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Unit 9: The Mole

Unit 9: The Mole

Assessment

Quiz

Chemistry

10th - 12th Grade

Practice Problem

Medium

NGSS
HS-PS1-7

Standards-aligned

Created by

Christina Storozuk

Used 154+ times

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

How many moles of silver are in 1.8 x 1020 atoms of silver?

3.0 x 10-4

3.3 x 10-3

3.0 x 104

1.1 x 10-44

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

How many molecules are in 2.10 moles of CO2?

2.53 x 1024

3.79 x 1024

3.49 x 10-24

1.26 x 1024

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the molar mass of (NH4)2CO3?

144g

138g

96g

78g

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the mass in grams of 5.90 mol C8H18?

0.0512g

19.4g

389g

673g

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the percent composition of barium in BaCrO4?

20.5%

54.2%

25.26%

66.88%

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If 60.2 grams of Mg combine with 24.0 g of Cl to form a compound, what is the percent composition of Mg?

28.50%

41.37%

60.33%

71.50%

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

How many moles are in 5.0 L of Ar gas (at STP)?

112 mol

8.92 mol

0.223 mol

2.80 mol

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