Do you mean how many grams molecular weights are present in 4.9 g H2SO4? If so, that is just the number of moles.
moles = g/molar mass = 4.9/98 = ??
how many gram molecules are present in 4.9g of H2SO4
2 answers
atomic mass of h+so=9.8
concteration: 4.9*5*98
%1000*1=2.401
concteration: 4.9*5*98
%1000*1=2.401