# What is the mass of neon that exerts a pressure of 720 mmHg with a temperature of -15.0°C, when the volume of the container is 760 mL?

May 13, 2018

$\text{Mass of neon} \equiv 1.36 \cdot g$

#### Explanation:

We use the old Ideal Gas equation...

$n = \frac{P V}{R T} = \frac{\frac{720 \cdot m m \cdot H g}{760 \cdot m m \cdot H g \cdot a t {m}^{-} 1} \times 760 \cdot m L \times {10}^{-} 3 \cdot L \cdot m {L}^{-} 1}{0.0821 \cdot \frac{L \cdot a t m}{K \cdot m o l} \times 258.15 \cdot K}$

$= 0.0340 \cdot m o l$...a mass of .......

$0.034 \cdot m o l \times 40.0 \cdot g \cdot m o {l}^{-} 1 = 1.36 \cdot g$