Unit 10 Test Remediation 11th Grade Quiz

Unit 10 Test Remediation

Assessment

•

Nichole Maurer

•

Chemistry

•

11th Grade

•

2 plays

•

Hard

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31 questions

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1.

Multiple Choice

1 min

1 pt

Find the percent composition of Cu₂S?

%Cu= 67.987 %S= 32.013

%Cu= 79.854 %S= 20.145

%Cu= 35.946 %S= 64.054

2.

Multiple Choice

1 min

1 pt

A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?

Mg₄N₃

MgN₂

Mg₃N₂

MgN

3.

Multiple Choice

1 min

1 pt

Which of the following is considered an empirical formula?

CH₃COOH

C₆H₁₂O₆

H₂O

4.

Multiple Choice

1 min

1 pt

What is the percentage of oxygen in carbon dioxide? (CO2)

27.3%

72.7%

30%

70%

5.

Multiple Choice

2 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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