Ideal Gas Law Only - Assessment

1.

Multiple Choice

15 mins

1 pt

If the pressure exerted by a gas at 25 ⁰C in a volume of 0.044 L is 3.81 atm, how many moles of gas are present?

.002766 mole

.0069 mol

2.766 mol

9.887 mol

2.

Multiple Choice

15 mins

1 pt

Determine the Celsius temperature of 2.49 moles of gas contained in a 1.00-L vessel at a pressure of 143 kPa.

-266 degrees C

-622 degrees C

622 degrees C

266 degrees C

3.

Multiple Choice

15 mins

1 pt

Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm.

7.18 L

7.81 L

4.63 L

4.36 L

4.

Multiple Choice

15 mins

1 pt

Determine the Kelvin temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under .998 atm pressure.

0 K

107 K

207 K

307 K

5.

Multiple Choice

5 mins

1 pt

How many moles of gas are contained in 890.0 mL at 21.0 °C and 750.0 mm Hg pressure?

.0364

.00474

.5096

.0684

6.

Multiple Choice

15 mins

1 pt

At standard temperature and pressure (0 ⁰C, 760 torr), what volume would 4g of helium gas occupy?

33.6 L

22.4 L

44.8 L

11.2 L

7.

Multiple Choice

15 mins

1 pt

If the pressure exerted by a sample of carbon tetrachloride gas at 25 ⁰C in a volume of 45 mL is 3.80 atm, how many grams of gas are present? (hint: start by calculating the number of moles present)

0.33 g

1.06 g

0.67 g

1.60 g

8.

Multiple Choice

15 mins

1 pt

1.09 g of H₂ is contained in a 2.00 L container at 20.0 °C. What is the pressure in this container in atm?

14.29 atm

.443 atm

6.56 atm

3.28 atm

9.

Multiple Choice

3 mins

1 pt

What is the pressure in atmospheres of a 0.108-mol sample of helium gas at a temperature of 200.0 ⁰C if its volume is 0.505 L?

8.30 atm

2.42 atm

29.3 atm

5.14 atm

10.

Multiple Choice

15 mins

1 pt

How many of these pressure values are standard pressure?
700 torr
0.5 atm
101 Pa

Zero

One

Two

Three

11.

Multiple Choice

15 mins

1 pt

How many of these temperature values are standard temperature?
273 K
0 ⁰C

Zero

One

Two

Depends on pressure

12.

Multiple Choice

5 mins

1 pt

The volume of 3.5 moles of gas at -73 ⁰C and 303.9 kPa is ___

19.2 L

22.4 L

20.4 L

17.9 L

13.

Multiple Choice

5 mins

1 pt

The temperature of 66 grams of carbon dioxide gas if takes up 2,000 mL of volume and has a pressure of 22,800 torr is ___.

500 K

273 K

487 K

0.00205 K

14.

Multiple Choice

5 mins

1 pt

What is the volume of a 0.67 mole sample of xenongas (Xe) with a temperature of 37 ^oC and has a pressure of 740 mm Hg?

20.5 L

17.5 L

131.9 L

44.8 L

15.

Multiple Choice

5 mins

1 pt

How many grams of oxygen gas must be placed in a 3.00 liter container in order to exert a pressure of 202.6 kPa at 25 °C?

7.85 g

3.92 g

2.45 g

12.33 g

16.

Multiple Choice

15 mins

1 pt

An 18 liter container holds 33.91 grams of boron trifluoride gas (BF₃) at 45 °C. What is the pressure in the container?

23.2 atm

0.725 atm

0.725 mmHg

23.3 mmHg

17.

Multiple Choice

15 mins

1 pt

How many liters of gas are there in 44 g of bromine gas at STP?

3.50 L

3.08 L

12.34 L

6.16 L

18.

Multiple Choice

15 mins

1 pt

A sample of nitrogen gas has a volume of 6.0 L at a pressure of 1.13 atm and a temperature of 282 K. What is the density (units: grams/Liter) of the gas sample at these conditions?
(The density of a gas is determined by dividing its mass by the volume it occupies.)

8.20 g

4.10 g

16.20 g

12.50 g

19.

Multiple Choice

15 mins

1 pt

2C₆H₂(NO₂)₃CH_3(s) →
12CO_(g) + 5H_2(g) + 3N_2(g) + 2C_(s)
2 moles of TNT react at STP as shown above.
What is the total volume of gas produced in the reaction? (Hint: figure out moles of each gas produced then add them up)

240 L

480 L

288 L

408 L

20.

Multiple Choice

15 mins

1 pt

Which sample of gas would occupy the greatest volume?
Sample A: 12.0 grams of hydrogen gas at 966 torr and 313 K
Sample B: 250 grams of sulfur hexafluoride at 55.9 kPa and 50 ⁰C
Sample C: 938 grams of carbon tetrachloride at 3000 mm Hg and 278 K
Sample D: 1.75 moles of oxygen gas at STP

Sample A

Sample B

Sample C

Sample D

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