Please Help! determine the number of formula units in 0.467 g of sulphuric acid, H2SO4

please help...show work so i can work on rest of homework.


Question #1. determine the number of formula units in 0.467 g of sulphuric acid, H2SO4

num of moles = 0.467 / 98.07 ( molar mass)
= 0.00476 mol of H2SO4

formula units = 0.00476 x ( 6.022 x 10^23 ) [ this is the avegardro's constant)
= 2.86 x 10 ^21

Since sulfuric acid is molecular, the formula units are molecules.
The molecular weight (formula weight) = 6.02x10^23 molecules

? molecules = 0.467 g H2SO4 x 6.02x10^23 H2SO4 molecules/98.0 g H2SO4
= 2.87x10^21 molecules