A 248 mL gas sample has a mass of 0.433 g at a pressure of 745 mmHg and a temperature of 28°C. What is the molar mass of the gas?
1 Answer
The molar mass of the gas is 44.0 g/mol.
Explanation:
We can use the Ideal Gas Law to solve this problem.
color(blue)(bar(ul(|color(white)(a/a)PV = nRTcolor(white)(a/a)|)))" "
Since
we can write the Ideal Gas Law as
color(blue)(bar(ul(|color(white)(a/a) PV = m/MRTcolor(white)(a/a)|)))" "
We can rearrange this to get
M = (mRT)/(PV)
In your problem,
∴