At the top of a mountain, the thermometer reads `0^(@)C` and the barometer reads `700 mm Hg`. At the bottom of the mountain the thermometer reads `30^(@)C` and the pressure 760 mm Hg. Compare the density of the air at the top with that at the bottom

Answer

`1.02 : 1`

Explanation

Density is inversely proportional to volume
`(d_("top"))/(d_("bottom")) = (V_(b))/(V_(t)) = (T_(b) P_(t))/(T_(t) P_(b)) = (303 xx 700)/(273 xx 760) = (1.02)/(1)`