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CHM092 QUIZ (2)

Total questions: 10

Worksheet time: 43mins

Name
Class
Date
1.

What law combines all 3 factors (pressure, temperature, and volume)

a)

Combined Gas Law

b)

Charle's Law

c)

Boyle's Law

d)

Avogadros Ideal Gas Law

e)

none are correct

2.

What volume of methane gas at 273 K and 101.33 kPa do you have when the volume is decreased to 0.50 L, with a temperature of 300 K and a pressure of 151.99 kPa.

a)

0.68 L

b)

0.82 L

c)

0.50 L

d)

0.37 L

3.

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

4.

A 500 mL metal cylinder holding 0.100 moles of helium gas is known to rupture at a pressure of 10 atmospheres. At what temperature, in °C, will the container fail?

a)

336 °C

b)

608 740 °C

c)

- 272.4°C

d)

609 °C

5.

Three gases, Ar, N2 and H2 are mixed in a 500L container. Ar has a pressure of 255 torr, N2 has a pressure of 228 torr and H2 has pressure of 752 torr. What is the total pressure in the container?

a)

483 torr

b)

270 torr

c)

1235 torr

6.

A 250 mL sample of oxygen is collected over water at 25° C and 760.0 torr pressure. What is the pressure of the dry gas alone? (Vapor pressure of water at 25° C = 23.8 torr)

a)

783.8 torr

b)

205.38 torr

c)

1250 torr

d)

736.2 torr

7.
How many grams of H3PO4 are in 175 mL of a 3.5 M solution of H3PO4?
a)
60
b)
4.9
c)
612
d)
20
8.
What mass in (g) of AgBr is formed when 35.5 mL of 0.184 M AgNO3 is treated with an excess of aqueous hydrobromic acid?
a)
53.6
b)
1.44
c)
1.23
d)
34.5
9.

How many moles of HNO3 would be needed to react with 85mL of 0.75M KOH?

a)

113.3 mol

b)

1.13 mol

c)

.113mol

d)

0.06375mol

e)

63.75mol

10.

What would the molarity of the solution be if 0.475 mol of KNO3 were formed in this reaction and the final volume of the solution was 595mL

a)

0.798M

b)

1.25M

c)

282.6M

d)

7.98x10-4M