A balloon is inflated outdoors on a cold day in North Dakota at a temperature of

Question

A balloon is inflated outdoors on a cold day in North Dakota at a temperature of -35°C to a volume of 3.0 L. The pressure remains constant. What is the volume of the balloon indoors at a temperature of 25°C?

2.4 L

2.1 L

3.2 L

3.8 L

The kinetic-molecular theory of gases assumes which of the following?

A- There are weak but significant interactions between gas molecules.

B- The total amount of energy will change when gas molecules collide.

C- The average kinetic energy of gas molecules will increase when you lower the temperature of the gas.

D- Gas molecules move constantly and in straight lines.

Explanation / Answer

1)

we have:

V1 = 3.0 L

T1 = -35.0 oC

= (-35.0+273) K

= 238 K

T2 = 25.0 oC

= (25.0+273) K

= 298 K

we have below equation to be used:

V1/T1 = V2/T2

3.0 L / 238.0 K = V2 / 298.0 K

V2 = 3.8 L

Answer: 3.8 L

Feel free to comment below if you have any doubts or if this answer do not work

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