Free Printable 5.2 Molar Mass & 1 Step Conversions

Worksheets

5.2 Molar Mass & 1 Step Conversions

Total questions: 30

Worksheet time: 8hrs 30mins

Name

Class

Date

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

Atomic mass

Atomic number

Oxidation number

Valence electrons

The mass of one mole of substance is called...

molecular mass

mole constant

molar mass

atomic weight

What is the molar mass of sodium?

45.98

What is the molar mass of fluorine gas?
(beware!)

18.998 g/mol

38 g/mol

9 g/mol

18 g/mol

What is the mass of one mole of aluminum?

27 g

13 g

54 g

14 g

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

What is the molar mass of NaOH?

40 g/mol

38.989 g/mol

23.998 g/mol

57.004 g/mol

What is the mass of one mole of aluminum chloride (remember to determine the correct formula first)?

62.435g

116.399g

133.341g

97.888g

What is the molar mass of CO₂?

10.

How many particles are in a mole?

602

602 million

602 moles

6.02 x 10²³

11.

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

12.

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.

13.

What is the molar mass of PbSO₄?

303.27 g/mol

255.27 g/mol

163.87 g/mol

372.27 g/mol

14.

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

15.

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

16.

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

17.

Determine the mass of 4.20 moles of C₆H₁₂

353 g

0.0499 g

337 g

2.53 x 10²⁴ g

18.

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

19.

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

20.

What is the mass of 0.89 mol of CaCl₂?

111 grams

0.008 grams

98.9 grams

none of the choices

21.

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

2879 moles

8.291 moles

.8291 moles

.829 moles

22.

Convert 86.235 g of diphosphorus pentaoxide to moles.

12240 moles

1.8747 moles

.608 moles

.60755 moles

23.

Which conversion factor should be used to solve the following, "How many moles are in 28 grams of CO₂?"

1 mol = 22.4 L

1 mol = 44.01 g

1 mol = 6.02x10²³ atoms

more than one

24.

What is the volume occupied by 1 mole of any gas?

44.8 L

22.4 L

16.8 L

20.4 L

25.

How many moles are in a 18 L tank of nitrogen gas?

0.9 moles

1 mole

0.8 moles

0.75 moles

26.

How many moles are in 89 liters of water vapor?

1993.6 moles

4.93 moles

1.478 moles

3.97 moles

27.

How many moles are 2.85 x 10²⁰ atoms of iron?

4.73 x 10^-4 moles

1.72 x 10⁴ moles

1.72 x 10^-42 moles

4.73 x 10⁴ moles

28.

A mole of carbon disulfide contains 6.02 x 10²³_____.

atoms

formula units

ions

molecules

29.

The number 6.02 x 10²³ is called...

Obama's number

Bohr's number

Trump's number

Avogadro's number

30.

How do we get mass from moles?

multiply by avogadro's number

multiply by molar mass

divide by avogadro's number

divide by molar mass

100 %

5.2 Molar Mass & 1 Step Conversions

Total questions: 30

Worksheet time: 8hrs 30mins

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