The density of a balloon will decrease if?

(a) more gas is added to the balloon
(b) a higher molar mass gas is substituted
(c) the temperature of the gas is increased
(d) none of the above

Thank you to anyone that answers this.

1 Answer
anor277
Mar 27, 2018

#c.# is probably the best answer....

Explanation:

By definition, #"density"# #,rho="mass"/"volume"#...

#a.#...and when we inflate a balloon we do increase its mass (because we add MORE gas), but we also increase its volume....

On the other hand for #b.# we add a gas whose molar mass is higher....CLEARLY, for a GIVEN volume the mass of the balloon will be greater, and so will its density....

#d.#...probably a distraction...

#c.#...and should we increase the gas temperature, the volume occupied by a given balloon should increase....the denominator in the defining quotient for density becomes LARGER, and so density should DECREASE....

Related questions
Impact of this question
4753 views around the world
You can reuse this answer
Creative Commons License