Partial Pressure!?

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Can someone please help me with this problem... I don't get it. There is a gaseous mixture that has 1.5 mol of Ar and 3.5 mol of CO2. It's total pressure is 7.5 atm. What's the partial pressure of CO2? How would I set it up? Thanks!

2007-03-08 12:29:19 · 1 answers · asked by Need4Speed 2 in Science & Mathematics ➔ Chemistry

1 answers

they always have the formula somewhere on your book
Pco2=mole fraction*Ptotal
P is pressure, mole fraction= mole of CO2/mole total
PCO2= 3.5/(3.5+1.5)*7.5atm= 5.25 atm
good luck

2007-03-08 12:40:23 · answer #1 · answered by Helper 6 · 0⤊ 0⤋