% Composition = ?
no atom in 2 g of styrene =?
molar mass of strene =104.15
% composition of c= 12/13.008 =.922100=92.2
% composition of h =1.008/13.008=0.0774100= 7.74
no gram atom=mass in kg /molar mass=2/104.15 =0.01920 mol
no of gram atom avogadro's number = 0.01926.02 *10( exponent 23) =1.15584
