Free Printable Moles and Molar Mass

Worksheets

Moles and Molar Mass

Total questions: 20

Worksheet time: 22mins

Name

Class

Date

What is the numerical value of Avogadro's number?

60.22x10²³

6.022x10²³

6.022x10³²

6.022x10²⁴

How many atoms are found in 1 mol of Xenon atoms?

6.022x10²³

3.011x10²³

1.204x10²⁴

6.022x10²⁴

What is molar mass?

The mass of an atom

The mass of a mole of atoms

The mass of a cute little star-nosed mole

When did we talk about this?

Which has more atoms, 0.1 mole of silver or 1 mole of gold?

1 mole of gold

0.1 mole of silver

False, they are the same

Not enough information

What is the mass of 1.25 mol of Sn?

14.839 g

148.39 g

0.011 g

94.4 g

What is the molar mass of AuCl₃?

96 g

130 g

232.5 g

303.3 g

Which would have more atoms?

1 mole of Li

1 mole of Au

1 mole of Si

None, all are equal

What is the molar mass of H₂O?

6.02 x 10²³

16 grams/mol

18 grams/mol

15.99999 grams/mol

How many molecules of sugar (C₆H₁₂O₆) are in a mole?

24 molecules

180 molecules

180 g

6.02 x 10²³molecules

10.

What is the molar mass of table salt (NaCl)?

116.886 g/mol

35.453 g/mol

22.990 g/mol

58.443 g/mol

11.

The molar mass of an element is equal to its...

Atomic mass (from the periodic table)

Atomic number (from the periodic table)

Oxidation number

Valence electrons

12.

Molar mass is in units of ________.

grams

grams/mole

mole

moles/gram

13.

The molar mass of calcium is 40.08 g/mol. This means that 1 mole of calcium has a mass of:

4.008 grams

40.08 grams

20 grams

20.04 grams

14.

What is the molar mass of platinum?

106.42 g/mol

78 g/mol

46 g/mol

195.08 g/mol

15.

Which of the following has the most atoms?

1 mole of oxygen

1 mole of carbon

1 mole of iron

These all have the same number of atoms

16.

If 1 mole of helium weighs 4 grams, how many grams will 3 moles of helium weigh?

4 grams

8 grams

12 grams

$\frac{4}{3}$ grams

17.

How many moles are in 20 grams of Ca (Calcium)?

0.5

18.

Determine the mass of 4.20 moles of C₆H₁₂

353 g

0.0499 g

337 g

2.53 x 10²⁴ g

19.

What is a mole?

The standard “unit” for measuring the amount of particles in a substance.

The abbreviation for the term molecule.

The relative mass of one atom of an particular element.

A dark, hairy spot on your arm.

20.

How many grams are in 11.9 moles of chromium?

50 g

619 g

0.23 g

4.4 g

100 %

Moles and Molar Mass

Total questions: 20

Worksheet time: 22mins

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