The question, my work, and the answer are below, i just wanted someone to check it over-- I just wanted to make sure that no changes needed to be made to the molar mass or anything because Neon is a diatomic gas...
What is the mass in grams of neon gas that occupies a volume of 5 liters at 0°C and 1.0 atm?
1.0 atm * 5 L = n * (.0821 L/atm* mol/K) * (0°C+273K)
5 = n * 22.4133
.22308 moles = n
molar mass of Ne= 20.18g
.22308mol Ne | 20.18g Ne = 4.50179 g Ne
| 1 mol Ne
= 4.5 g Ne (W/ SIG FIGS: either 4 or 5 g Ne)
thanks so much!