Hot air balloons gain their lift from the reduction in the density of air that occurs when the air in the envelope is heated. To what temperature should you heat a sample of air (initially at 374 K) to increase its volume by 13%? Answer in units of K.

Question

thanks for helping !

Answer 1

(V1/T1) = (V2/T2)
Since they don't give a volume, just make up a convenient number for V1(say 100 L) then V2 will be 113 L.

Answer 2

1- C
2-B
3-C
4-B,C
5- D
6- D
7- C
8- B
9- C
10-C

Answer 3

Hannah is 100% correct! ^_^ Thanks!

Answer 4

Hannah is correct! :P