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Mixed Gas Laws

Total questions: 13

Worksheet time: 39mins

Name
Class
Date
1.

How many grams of helium occupy 98 L at a pressure of 2.8 atmospheres and a temperature of 292 K?

a)

11 moles of gas

b)

44.9 g

c)

22 moles of gas

d)

65.4 g

2.

A balloon is filled with 35.0 L of helium in the morning when the temperature is 20.0 0C. By noon the temperature has risen to 45.0 0C. What is the new volume of the balloon?

a)

380 L

b)

38.0 L

c)

3.0 L

d)

8.0 L

3.

A balloon that can hold 85 L of air is inflated with 70.63 grams of neon of gas at a pressure of 1.0 atmosphere. What is the temperature in Celcius (0C) of the balloon?

a)

296 K = 230 C

b)

212 K = -61 C

c)

0 K = -273 C

d)

296 K = 23 C

4.

CaCO3 decomposes at 1200 0C to form CO2 gas and CaO. If 25 L of CO2 are collected at 1200 0C, what will the volume of this gas be after it cools to 25 0C?

a)

51 L

b)

5.1 L

c)

1 L

d)

700 L

5.

A gas canister can tolerate internal pressures up to 210 atmospheres. If a 2.0 L canister holding 3.5 moles of gas is heated to 1350 0C, will the canister explode?

a)

230 atm. No, the canister will not explode.

b)

230 atm. Yes, the canister will explode.

c)

30 atm. No, the canister will not explode.

d)

30 atm. Yes, the canister will explode.

6.
If the pressure exerted by a gas at 25 degrees C in a volume of 0.044 L is 3.81 atm, how many moles of gas are present?
a)
.002766 mole
b)
.0069 mol
c)
2.766 mol
d)
9.887 mol
7.
As number of moles goes up, volume 
a)
goes down.
b)
goes up.
c)
stays the same
8.
Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm.
a)
7.18 L 
b)
7.81 L
c)
4.63 L
d)
4.36 L
9.

A sample of sulfur dioxide occupies a volume of 652 mL at 313 K and 150 atm. What volume will the sulfur dioxide occupy at 1 atm and 273 K?

a)

1682.6 mL

b)

20.7 mL

c)

492.3 mL

d)

842.1 mL

10.

If I initially have a gas at a pressure of 12.0 atm, a volume of 23.0 liters, and a temperature of 200. K, and then I raise the pressure to 14.0 atm and increase the temperature to 350. K, what is the new volume of the gas

a)

12.8 liters

b)

34.5 liters

c)

51 liters

d)

6.4 liters

e)

none are correct

11.

What is the new volume of the gas if the pressure on 350 L of oxygen at .947 atm is decreased to .789 atm?

a)

420 L

b)

29.16 L

c)

4200.0 L

d)

291.6 L

12.
A gas occupies 4.98 L at 2.6 atm of pressure. What volume does it occupy at 1.8 atm pressure?
a)
12.9 L
b)
0.72 L
c)
7.2 L
d)
3.44 L
13.
The volume of a gas at 25ο C is 3.8 L.  What will be the volume of that gas at 57 ο C if the pressure is held constant?
a)
8.66 L
b)
4.21 L
c)
6.34 L
d)
3.46 L