Please Help Me With Chemistry!!?

Question

0.540 g He, 7.638 g F2, and 14.160 g Ar are placed in a 17.8-L container at 20 oC. What are the molar concentrations and partial pressures of the gases?
(All values to the nearest 0.0001)
a). He
b). F2
c). Ar

Answer 1

Find moles of each gas using avagadro's #. Then, add up all the moles to find total moles. Molar concentration= (Moles gas)/(Total Moles). The partial Pressure of each gas is given by multiplying the molar concentration times the total pressure of the gas, which is found through PV=nRT. P= (nRT)/V