Question

You are playing with a helium balloon on a warm day when suddenly, the Kelvin temperature doubles. Which of the following is true?

a) the volume of the balloon will double. b) the pressure inside the balloon will double c) the volume of the balloon will decrease d) the volume of the balloon will slightly increase e) the actual temperatures are needed to answer this question.

Answer 1

If T doubles, then

a) the volume of the balloon will double.

true, since

V1/T1= V2/T2, meaning that if T increases, V must increase

b) the pressure inside the balloon will double

True, since

P1/T1 = P2/T2

then, P must increase as well

c) the volume of the balloon will decrease

False, Increase in T will increase V

d) the volume of the balloon will slightly increase

False, not "slightly", it will icnrease

e) the actual temperatures are needed to answer this question.

False, we can predict this