Free Printable Mole Concept

1.

What is Avogadro's Number?

a)

1.2 x $10^{24}$

b)

6.02 x $10^{23}$

c)

602

d)

305

2.

The mass of 1 mole is known as

a)

A mole

b)

Molar mass

c)

Percent Composition

d)

Grams

3.

Given 84 g of $H_2O$ , which conversion factor would allow you find the number of moles?

a)

1 mol = 84 g

b)

1 mol = 18 g

c)

1 mol = 6.02 x $10^{23}$

d)

1 mol = 1.2 x $10^{24}$

4.

If a dozen = 12, how much does a mole equal?

a)

6.02x $10^{23}$

b)

18 g

c)

2.3 x $10^{24}$

d)

184 g

5.

Given 5 moles of NaCl, which conversion factor would allow you to determine the number of molecules?

a)

1 mol = 58 g

b)

1 mol = 23 g

c)

1 mol = 6.02 x $10^{23}$ molecules

d)

1 mol = 35 g

6.

Find the molar mass of $Mg\left(OH\right)_2$

a)

(1x24) + (1x 16) + (2 x 1) = 42 g/mol

b)

(1x24) + (2x16) + (2x1) = 58 g/mol

c)

(2x24) + (2x16) + (2x1) = 82 g/mol

d)

(1x24) + (1x16) + (1x1) = 41 g/mol

7.

Given 7 moles of $PbI_2$ , which conversion factor would you use to find the number of grams?

a)

1 mol = 201 g

b)

1 mol = 6.02 x $10^{23}$ molecules

c)

1 mol = 461 g

d)

1 mol = 6.02 x $10^{23}$ atoms

8.

When do you need to calculate molar mass?

a)

Every time

b)

Given the chemical formula

c)

Given Moles and Molecules

d)

Given Moles and Grams

9.

What is the molar mass of NaCl?

a)

(1x23) + (1x35) = 58 g/mol

b)

(1x23) x (1x35) = 805 g/mol

c)

(2x23) + (2x35) =116 g/mol

d)

You need more information

10.

Who discovered the mole?

a)

Albert Einstein

b)

Lil' Nas

c)

Amedeo Avogadro

d)

John Dalton

11.

Given 2.3 x $10^{23}$ molecules of $Ca\left(OH\right)_2$ , which conversion factor would you use to find the amount of moles

a)

1 mol = 6.02 x $10_{ }^{23}$ molecules

b)

1 mol = 74 g

12.

What do you always start your conversion table with?

a)

The molar mass

b)

1 mol = 6.02 x $10^{23}$ molecules

c)

1 mol = molar mass

d)

The given

13.

What units are used for molar mass?

a)

mol

b)

grams (g)

c)

grams per mole (g/mol)

d)

Molecules

14.

Which of the following DOES NOT use the conversion 1 mol = 6.02 x $10^{23}$

a)

moles to grams

b)

moles to molecules

c)

moles to atoms

d)

moles to formula units

15.

True or False: You need to calculate molar mass for the following question - Given 2 moles of $Mg\left(OH\right)_2$ , how many molecules?

a)

True

b)

False

Mole Concept

Total questions: 15

Worksheet time: 11mins

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