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molar volumes

Total questions: 14

Worksheet time: 39mins

Name
Class
Date
1.

Standard temperature and pressure (STP) mean

a)

A temperature of 0°C and a pressure of 101.3 kPa, or 1 atmosphere (atm).

b)

A temperature of 100°C and a pressure of 101.3 kPa, or 1 atmosphere (atm).

c)

A temperature of 0°K and a pressure of 10 atmosphere (atm).

2.

At STP, 1 mol, or representative particles, of any gas occupies a volume of......................

a)

24.4 L

b)

44.2 L

c)

22.4 L.

3.

The quantity, 22.4 L, is called the ........................ of a gas.

a)

molar volume

b)

molar mass

c)

Atomic volume

4.

Different gases have different densities

a)

True

b)

False

5.

The density of a gaseous compound is found to be 0.982 g/L at STP. What is the molar mass of the compound?

a)

22

b)

44

c)

33

6.

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

7.

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

8.

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

9.
Avogadro's number of representative particles is equal to one_____.
a)
kilogram
b)
gram
c)
kelvin
d)
mole
10.

How many moles of methane gas molecules, CH4, are in 12 liters of methane at Room temperature and pressure?

a)

11.2 moles

b)

0.5 moles

c)

179.2 moles

d)

27.2 moles

11.

What volume of hydrogen will be produced at RTP by the reaction 67.3 g of magnesium with excfess water according to the following reaction?

1Mg + 2H2O --> Mg(OH)2 + H2


Ar values: Mg=24.3, H=1, O=16

a)

66.5L

b)

65L

c)

31L

d)

124L

12.

what is the temperature and pressure at RTP ?

a)

25 0C and 100 atm

b)

25 0C and 1 atm

c)

0 0C and 1 atm

d)

none of these

13.

For a gas, the volume that one mole occupies at 0.00°C and 1.00 atm pressure for STP or at 25°C and 1.00 atm for RTP

a)

molar volume

b)

Ideal gas constant

c)

Avogadro's principle

d)

absolute zero

14.

Which volume will be occupied by a gas containing 6.02 x 1023 atoms at RTP?

a)

1.0 L

b)

24 L

c)

22.4 L

d)

44.8 L