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Question

Gas is contained in an 7.0 L vessel at a temperature of 20 degrees C and a pressure of 7.4 atm.

(a) Determine the number of moles of gas in the vessel.

I have already solved for this part and got 2.16 mol

(b) How many molecules are in the vessel?

Answer 1

M = N*Moles

where N is Avogadro's #, 6.23E23 (I think!)