# pressure questions?

(1)A 1.00 litre tank is filled with 1.00 g each of F2, O2 and N2 gas.

Calculate the mole fraction of F2.

(2)A 1.00 litre tank is filled with 1.00 g each of F2, O2 and N2 gas.

What is the partial pressure of N2 if the pressure in the container is 1.00 atm?

### 1 Answer

Relevance

- davidLv 71 month ago
a. convert each to moles using the molar mass.

... /ex -- 1.00g O2 X 1mole/32.0g = 0.03125 mol O2

... you do the rest

... now add all -- to get total moles

finally == mol F2 / total mol = mole fraction of F2

b. proportion

mol N2 / total mole = P(N2) / 1atm ... solve for P(N2)

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