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MOLE CONCEPT

Total questions: 10

Worksheet time: 10mins

Name
Class
Date
1.

Which of the following is an abbreviation for relative atomic mass?

a)

Ar

b)

Mr

c)

Z

2.

What is the relative atomic mass of carbon? Use a periodic table to help you answer.

a)

6

b)

12

c)

40

3.

What is the relative formula mass of ammonium nitrate, NH4NO3?

a)

66

b)

44

c)

80

4.

What name is given to the number of atoms in a mole of an element?

a)

Planck's constant

b)

Avogadro's constant

c)

Newtonian constant

5.

How many moles are there in 9 g of water?

a)

2

b)

1

c)

0.5

6.

What is the mass of 3 moles of ammonia, NH3?

a)

17kg

b)

51kg

c)

51g

7.

What mass of iron will be made when 16g of Fe2O3 reacts in the thermite reaction Fe2O3 + 2Al → 2Fe + Al2O3?

a)

11.2g

b)

112g

c)

11.2kg

8.

What volume does 1.5 moles of hydrogen gas occupy at room temperature and pressure?

a)

36 dm3

b)

36 cm3

c)

36 m3

9.

What is the concentration of a solution if 0.25 mol is dissolved in 500 cm3 of solution?

a)

1 mol/dm3

b)

2 mol/dm3

c)

0.5 mol/dm3

10.

How many moles of solute are there in 25 cm3 of a solution that has a concentration of 0.4 mol/dm3?

a)

0.01 moles

b)

10 moles

c)

0.0625 moles