Chemistry- Partial Pressures?

Question

In a mixture of H2 and CH4 gases, the partial pressure of H2 is 0.130 atm. The total pressure is 0.380 atm. The temperature is 26.0oC. If the total volume of the gas mixture is 526 mL, what is the mass of CH4 in grams?

Answer 1

use dalton's law to get the pressure of CH4(total pressure - H2 pressure)
then use ideal gas law to get the moles of CH4(PV=nRT)
*watch your units*
change moles of CH4 to grams of CH4(moles x molar mass)