# A 1.00-mole sample of neon gas occupies volume of 24.4 liters at 298 K and 101.3 kilopascals in the space below. How do you calculate the density of this sample?

Nov 4, 2016

The density of Ne is $\text{0.901 g/L}$ at $\text{25"^@"C}$.

#### Explanation:

$\text{density"="mass"/"volume}$

The density of a substance will vary with temperature because temperature affects volume. In this case, the density of neon is calculated at ambient temperature of ${25}^{\circ} \text{C}$. $\left(298 - 273 = 25\right)$

$\text{1.00 mole of neon has a mass of 20.1797 g}$. This is its atomic weight on the periodic table, but in grams.

The volume is given as $\text{22.4 L}$.

To calculate its density, divide its mass by its volume.

$\text{density"_"Ne"=(20.1797"g")/(22.4"L")="0.0901 g/L}$