200 c.c. of a gas measured at S.T.P. has a mass of 0.268g. Molecular weight of the gas is:
16
2
28
30
200 cc → 0.268 gm
22400 cc → x g
x = 0.268 × 22400200 = 30
200 c.c. of a gas measured at S.T.P. has a mass of 0.268g. Molecular weight of the gas is