posted by faisal .
Determine the atomic weight of X in the following compounds
a)8g XH4 occupy 44.8L volume at 237C and 380 mmHg pressure
b)1.92g of X3 occupis a volume of 574 ml at 77C and 2 atm
c)A O.326 gram of gas,C3X4 has a volume of 250 ml at100C and 76 cmHg
d)A 3.12 gram of the gaS.HX,occupies a volume of 500 ml at -23C and 760 torr
Use PV = nRT and solve for n = number of moles. Then n = grams/molar mass, solve for molar mass.