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Mole Quiz Review

Total questions: 10

Worksheet time: 20mins

Name
Class
Date
1.

How many molecules are in 63 grams of water?

a)

18.02 moleclues

b)

3.8 x 1025 moleclues

c)

2.1 x 1024 moleclues

d)

3.5 molecules

2.

Determine the number of atoms in 26.00g of chromium.

a)

3.0 x 1023 atoms

b)

4.15 x 10-24 atoms

c)

2.71 x 10-22 atoms

d)

0.5 atoms

3.

How many grams are in 7.5 X 1023 molecules of H2SO4

(Masses: H=1, S=32, O=16)

a)

98.09 g H2SO4

b)

122g H2SO4

c)

45g H2SO4

d)

100g H2SO4

4.

Determine the number of atoms in 2.50 moles of Zinc.

a)

4.15 x 10-24 atoms

b)

1.51 x 1024 atoms

c)

163 atoms

d)

2.71 x 10-22 atoms

5.

If you have 4.57 x 1013 atoms of copper, how many moles do you have?

a)

7.59 x 10-11 moles

b)

2.75 x 1037 moles

c)

7.59 x 1011 moles

d)

2.75 x 1033 moles

6.
How many molecules are there in 31.8 moles of water?
a)
5.28 x 10-23 molecules
b)
1.91 x 1025 molecules
c)
5.28x 10-25
d)
1.91 x 1022
7.

Which statement is the BEST definition of a mole?

a)

One mole of a substance contains 6.02 x 1023 atoms of that substance.

b)

One mole of a substance contains 6.02 x 1023 particles, but different masses.

c)

A mole is 12 g of any element.

d)

A mole of any substance contains the same number of particles as 12 g of naturally occurring carbon.

8.

Calculate the molar mass of NH4NO2

a)

50 g/mol

b)

60 g/mol

c)

64 g/mol

d)

78 g/mol

9.

Calculate the molar mass of Ba(C2H3O2)2

a)

255.3 g/mol

b)

237.3 g/mol

c)

228.3 g/mol

d)

196.3 g/mol

10.

Which statement correctly identifies how mass, mole, and atoms are related?

a)

Atomic Number = 1 mole = 6.02 x 1023 atoms

b)

Molar Mass = 1 mole = 6.02 x 1023 atoms

c)

Molar Mass = 0.5 mole = 3.01 x 1023 atoms

d)

Atomic Number = 0.5 mole = 3.01 x 1023 atoms