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Intro to Moles Quiz

Total questions: 10

Worksheet time: 21mins

Name
Class
Date
1.

Molar mass is the

a)

atomic mass of atoms in a compound

b)

sum of the atomic masses of all atoms in acompound

c)

amount of moles in a compound

2.

Which statement is INCORRECT use of mole measurement?

a)

one mole of calcium is 40.01 grams.

b)

one mole of calcium is equals to 6.02 x 1023 atoms

c)

two moles of CaCl2 is equal to 6.02 x 1023 molecules

d)

two moles of KI is equals to 166g

3.

What is the molecular mass of one mole of HCl?

a)

79.92 grams per mole of HCl

b)

36.46 grams per mole of HCl

c)

35.45 grams per mole of HCl

d)

1.01 grams per mole of HCl

4.

When comparing a mole of oxygen and a mole of sulfur, how many atoms does each have?

a)

oxygen has 16 grams of atoms

b)

sulfur has 32.06 grams of atoms

c)

both contains 6.02 x 1023 atoms

d)

can be determined

5.
The number 6.02 x 1023 is called...
a)
Obama's number
b)
Bohr's number
c)
Trump's number
d)
Avogadro's number
6.
How many moles are in 4.3 x 1024 molecules of H2O?
a)
6.02 x 1023
b)
7.14
c)
18.02
d)
128.66 
7.
How many water molecules are in 5.2 moles of water?
a)
6.02 x 1023
b)
5.2
c)
3.1 x 1024
d)
8.638 x 10-24
8.

If I need 20.4 moles of NaCl, how much should I weigh out?

a)

0.549 g

b)

112 g

c)

1192 g

d)

5077 g

9.
Which has more molecules?
a)
1 mole H2O
b)
1 mole Al(OH)3
c)
1 mole NaCl
d)
There are all the same
10.
We use the periodic table to calculate...
a)
mass
b)
molar mass
c)
moles