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Moles and Molar Volume

Total questions: 20

Worksheet time: 58mins

Name
Class
Date
1.

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

a)

44.8 L

b)

22.4 L

c)

16.8 L

d)

24 L

2.

What is the volume of 5 moles of oxygen gas at RTP?

a)

112 L

b)

22.4 L

c)

120 L

d)

24 L

3.

What is the volume of 3 moles of hydrogen gas at RTP?

a)

22.4 L

b)

24 L

c)

72 L

d)

89.6 L

4.

Which compound has the smallest molar mass?

Ar Values: C=12, O=16, H=1

a)

CO

b)

CO2

c)

H2O

d)

H2O2

5.

What is the mass in grams of 6.25 mol of copper (II) nitrate (Cu(NO3)2?


Ar values: Cu= 63.5, N=14, O=16

a)

126 g

b)

785 g

c)

625 g

d)

1172 g

6.

A container with a volume of 893 L contains how many moles of air at RTP?

a)

20003.2

b)

39.9

c)

22.4

d)

37.2

7.

If I have 77.28 L how many moles of gas do I have at RTP ?

a)

3.22 moles

b)

3.45 moles

c)

22.4 L

d)

4.53 L

8.

How many moles of methane gas molecules, CH4, are in 6 liters of methane at Room temperature and pressure?

a)

11.2 moles

b)

0.5 moles

c)

179.2 moles

d)

0.25 moles

9.

Zn + 2HCI → ZnCI2 + H2.

If 0.3 mol Zn used, and HCI is excess, what is amount of H2 formed?

a)

0.15 mol

b)

0.3 mol

c)

0.6 mol

d)

1 mol

10.

2CO  +  O2  −-> 2CO2
How many liters of carbon dioxide are produced from 10L of carbon monoxide?

(a)  

11.
A scientist shows you a 2.25-mol sample of carbon and a 2.25-mol sample of selenium.  Which of the following is true?
a)
they have the same mass
b)
they have the same volume
c)
they have the name number of atoms
d)
they have the same density
12.

The volume of one mole of a substance is 24 L at RTP for all (a)   .

13.

What volume does a gas occupy at standard temperature and pressure?

a)

24dm3

b)

24000dm3

c)

24cm3

d)

2.4cm3

14.

what is the volume of 2 mole of a gas?

a)

24dm3

b)

48dm3

c)

24000cm3

d)

48000cm3

15.

what is the volume of 0.1 mole of a gas? (in dm3)

(a)  

16.

What is the mass of 24dm3 of hydrogen? (in grams)

(a)  

17.

What is the mass equation?

a)

mass = Mr / moles

b)

mass = moles / Mr

c)

moles = Mr x mass

d)

mass = Mr x mol

18.

What is the volume of 5 moles of oxygen gas at RTP?

(a)  

19.

What is the volume of 0.4 moles of methane gas molecules, CH4?

(a)  

20.

What is the volume of oxygen needed to fully combust with 1 mole of methane?

CH4 + 2O2-> CO2 + 2H2O

( in litres, or dm3)

(a)