# What volume would a 0.250 mole sample of H_2 gas occupy, which has a pressure of 17.0 atm, and a temperature of 35°C?

Apr 29, 2017

Well, we solve the Ideal Gas equation..........and get approx. a $400 \cdot m L$ volume.

#### Explanation:

$P V = n R T$, and so $V = \frac{n R T}{P}$

$= \frac{0.250 \cdot m o l \times \left(0.0821 \cdot \frac{L \cdot a t m}{K \cdot m o l}\right) \times 308 \cdot K}{17.0 \cdot a t m}$

=??*L.

The actual pressure MIGHT be different from the value calculated here, because the pressure is somewhat elevated. At moderate pressures and high temperatures we know that ALL gases exhibit Ideal Gas behaviour.