mols O2 = grams/molar mass
mols He = grams/molar mass
XO2 = n O2/total mols.
XHe = n He/total mols.
pO2 = XO2*Ptotal
pHe = XHe*Ptotal
A gas mixture contains 4.00 grams of O2 and 4.00 grams of He. If the total pressure of the gas sample is 4.67 atm, what is the partial pressure of each component?
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