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Mole Test Review

Authored by Lynsie Sandoval

Chemistry

10th Grade

Used 4+ times

Mole Test Review
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33 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which list of number for the atoms in Mg(NO3)2 is right?

Mg = 1, N = 6, O = 6

Mg = 1, N = 6, O = 2

Mg = 2, N = 2, O = 6

Mg = 1, N = 2, O = 6

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

How many O's are in Al₂(SO₄)₃

4

12

7

24

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the molar mass of NaOH?

39.997 g/mol

38.989 g/mol

23.998 g/mol

57.004 g/mol

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the molar mass of Ca(OH)2

74.1 g/mol

210.0 g/mol

98.9 g/mol

219.9 g/mol

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Find the percent composition of each element in N2S2

69.6% N, 30.4% S

15.2% N, 84.8% S

30.4% N, 69.6% S

65.2% N, 34.8% S

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the mass percentage of carbon in carbon dioxide?

27.3%

42.9%

57.1%

72.7%

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

You are given the following percentages: 40.05% S and 59.95% O. Find the empirical formula for these elements.

SO

SO2

SO3

SO4

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