Question

A normal breath of air is about 1.00 L. If the air is drawn in at 18.0 ∘C and is warmed to 35.0 ∘C, what will be the new volume of the air? Assume that the pressure and amount of the gas remain constant.

Answer 1

Answer:

The new volume of the air is 1.05 liters.

Explanation:

By Charles's law, we can make a relation between temperature and volume, where the volume of a gas (always in constant pressure) is directly proportional to its absolute temperature (T° in K)

So, when the temperature is increasing, volume increases

and when the temperature decreases, volume decreases.

V1/T1 = V2/T2

T° in K = T ° in C + 273

18°C + 273 = 291 K

35°C + 273 =308 K

1 L/291K = V2/308K

(1L /291K). 308K = V2

1.05 L = V2