Free Printable Mole Conversions Review

Worksheets

Mole Conversions Review

Total questions: 37

Worksheet time: 2hrs 15mins

Name

Class

Date

Which of the following statements regarding the mole is INCORRECT?

A mole is a unit of quantity equal to 6.02 x 10²³ particles.

The number of particles in a mole is known as Avogadro’s number.

A mole of particles of an element is numerically equal to the atomic mass of the element.

none of the above

The mass of one mole of an element is equal to

its atomic number from the periodic table, but in amus.

its atomic mass from the periodic table, but in amus.

its atomic mass from the periodic table, but in grams.

its atomic number from the periodic table, but in grams.

What is the molar mass of PbSO₄?

303.27 g/mol

255.27 g/mol

163.87 g/mol

372.27 g/mol

How many formula units are in 2.5 moles of NaCl?

1.5 x10²⁴formula units

1.5 formula units

4.2 formula units

4.2 x10^-24molecules

Shivani measures out 6.0 moles of epsom salt (MgSO₄) to put in her bath. How many grams of MgSO₄ went in the bath?

3.6 x 10²⁴ g

720 g

0.050 g

340 g

How many molecules are there in 31.8 moles of water?

5.28 x 10^-23 molecules

1.91 x 10²⁵ molecules

5.28x 10-²⁵

1.91 x 10²²

Determine the mass of 4.20 moles of C₆H₁₂

353 g

0.0499 g

337 g

2.53 x 10²⁴ g

Which of the following dimensional analysis setups will correctly convert 27.76 g of Li to atoms of Li?

What is the mass of 1.2 x 10²⁴ atoms of C?

2.0 grams

24 grams

0.17 grams

1.4 x 10²⁵ grams

10.

Calculate the number of atoms in 0.0340 g Zn.

5.20 x 10^-4 atoms Zn

3.13 x 10²³ atoms Zn

3.13 x 10²⁰ atoms Zn

2.05 x 10²² atoms Zn

11.

How many grams are in 1.2 moles of neon?

0.059 grams

7.2 x 10²³ grams

2.0 x 10^-24 grams

24 grams

12.

How many moles are in 98.3 grams of aluminum hydroxide, Al(OH)₃?

1.26 moles

0.8 moles

7,670 moles

1.63 x 10^-22 moles

13.

Which of the following dimensional analysis setups will correctly convert 4.00x10²³atoms of cobalt to moles of cobalt? How many moles of colbalt are there?

setup B : 0.664 mol Co

setup A: 2.41x10⁴⁷mol Co

setup A : 0.664 mol Co

setup B: 2.41x10⁴⁷mol Co

14.

How many formula units are there in 2.45 moles potassium chloride?

4.07 x 10^-24

1.47 x 10²⁴

1.47

4.07

15.

What is the molar mass of table salt (NaCl)? Read all options! Be careful!

58.44 amu

35.45 g/mol

22.99 g/mol

58.44 g/mol

16.

To melt the ice, Juan throws 455 g of calcium chloride, CaCl₂ on his sidewalk. How many moles of CaCl₂ did he throw?

50,500 moles

4.10 moles

7.56 x 10^-22 moles

111 moles

17.

How comfortable do you feel about mole conversions?

I am very confident about mole conversions.

I am somewhat confident about mole conversions.

I remember it a little bit and probably need a refresher.

I have forgotten everything we learned about mole conversions.

18.

In order to convert from grams of a substance to moles of a substance, I would need to (a) .

19.

In order to convert from moles of a substance to amount of representative particles, I would need to (a) .

20.

How many atoms of carbon are in 6.00 g of carbon?

1.20x10²⁴atoms C

6.02x10²³atoms C

3.01x10²³atoms C

1.50x10²³atoms C

21.

How many grams are in 1.2 x 10²⁴ molecules of CO?

28 grams

56 grams

6.02 grams

1.2 grams

22.

How many moles are in 3.01 x 10²² atoms of magnesium?

0.05 moles

1.81 x 10⁴⁶ moles

5.00 x 10²¹ moles

5 moles

23.

What are the units for molar mass?

grams

amu

grams/mole

liters

24.

What is the mass of 0.89 mol of CaCl₂?

111 grams

0.008 grams

98.9 grams

67.22 grams

25.

48.86 g of cobalt is equal to how many moles of cobalt?

2879 moles

8.291 moles

.8291 moles

8.291 x 10 moles

26.

How many molecules of water are in a 821.3 g sample?

45.58 molecules

8.232 x 10²⁵ molecules

8.909 x 10²⁷ molecules

2.744 x 10²⁵ molecules

27.

What is the mass of 4.98 x 10²⁴atoms of Zn?

541 g

8.27 g

.122 g

4.59 x 10⁴⁶ g

28.

How many moles of sodium chloride are in a 321.8 g sample?

18810 moles

3.315 x 10²⁴ moles

5.507 moles

4.767 moles

29.

How many formula units of calcium chloride are in a 25.69 g sample?

1.394 x 10²³ units

2851 units

.2315 units

3.845 x 10²⁵ units

30.

Convert 86.235 g of diphosphorus pentaoxide to moles.

12240 moles

1.8747 moles

141.94 moles

.60755 moles

31.

What would be the mass of 9.76 x 10²² formula units of SrCl₂?

.1622 g

25.7 g

20.0 g

.3589 g

32.

What is the molar mass of Hydrogen Peroxide (H₂O₂)?

48 g/mole

34.02 g/mole

18.02 g/mole

17.01 g/mole

33.

What is the mass in grams of 5.90 mol C₈H_18?

.0512 g

19.4 g

673 g

389 g

34.

How many moles are in 19.82 g Mg?

1.23 mol Mg

481.70 mol Mg

1.00 mol Mg

0.82 mol Mg

35.

How many grams are in 1.2 x 10²⁴ atoms of C?

29.34 grams

23.94 grams

6.02 grams

1.21 grams

36.

What is the molar mass of (NH₄)₂CO₃ ?

144.0g/mol

138.0 g/mol

96.1 g/mol

78.1 g/mol

37.

How many moles are in 98.3 g of Aluminum Hydroxide (Al(OH)₃)?

78.0 mol

1.30 mol

6.60 mol

5.90 mol

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Mole Conversions Review

Total questions: 37

Worksheet time: 2hrs 15mins

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