For the answer to the question above, I'll show the solution to my answers
moles C = 82.66 g/ 12.0111 g/mol=6.882
moles H = 17.34 g/ 1.008 g/mol=17.20
17.20/ 6.882 =2.5 => H
6.882 / 6.882 = 1 => C
to get whole numbers multiply by 2
C2H5 ( empirical formula Molar mass = 29.062 g/mol)
n = pV/RT = 0.732 x 0.158 L/ 0.08206 x 298 K= 0.00473
molar mass = 0.275/ 0.00473 =58.1 g/mol
58.1 / 29.062 = 2
multiply by two the empirical formula
C4H10
