Mole Conversions & % Composition

Mole Conversions & % Composition

10th Grade

13 Qs

quiz-placeholder

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Mole Conversions & % Composition

Mole Conversions & % Composition

Assessment

Quiz

Chemistry

10th Grade

Practice Problem

Medium

NGSS
HS-PS1-7

Standards-aligned

Created by

Britany Coleman

Used 3+ times

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13 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the % composition by mass of sodium in NaCl?

39%
61%
35%
65%

Tags

NGSS.HS-PS1-7

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the percentage of hydroxide ions in Ca(OH)2?

45.9%

75%

66.6%

90.1%

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The % composition of aluminum in aluminum sulfate, Al2(SO4)3, is:

12.93%

45.70%

7.89%

35.94%

15.77%

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The % composition of H in methane (CH4) is:

75%

92%

25%

4%

6%

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1 mole of Ca and 1 mole of Na have the same number of atoms.

True

False

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The unit for Molar mass is ________.

grams
grams/mole
mole
moles/gram

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

Which of the following dimensional analysis setups will correctly convert 4.00 x 1023 atoms of cobalt to moles of cobalt? How many moles of cobalt are there?

setup B : 0.6644mol Co
setup A: 2.41x1047mol Co
setup A : 0.664mol Co
setup B: 2.41x1047mol Co

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