## Trending News

# Volume of balloon and temperature change?

The volume of air in a balloon is 4.5 liters when inflated. When it cools the volume shrinks to 1.1 liters. If the original temperature 21.0 C, what new temperature would be required to produce that change if everything else is constant?

### 1 Answer

Relevance

- billrussell42Lv 76 months agoFavorite Answer
21ºC = 294 K

Constant pressure (Charles's law)

V₁/T₁ = V₂/T₂

or

V₁/V₂ = T₁/T₂

1.1/4.5 = x/294

x = 72 K = –201ºC

Still have questions? Get your answers by asking now.

thanks!