Anonymous

Since the pressure and temperature are not mentioned, I will assume that the mass is proportional to the volume. M1 ÷ V1 = M2 ÷ V2 65.79 ÷ 4.90 = M2 ÷ 3.75 M2 = 246.7125 ÷ 4.90 This is approximately 50.4 grams. I hope this is helpful for you.

Anonymous

[PV/(m/M)T] sub1 = [PV/(m/M)T] sub2 M = molar mass and stays constant [PV/(mT)] sub1 = [PV/(mT)] ... no mention of press. or temp, so assume they are constant [V/(m)] sub1 = [V/(m)] 4.9 / 65.79 = 3.75 / m m = 3.75(65.79)/4.9 = ... use a calculator