H2SO4 + 2Ag ---> Ag2SO4 + H2
ms H2SO4 = 100g 98% 100: 100 = 1 x 98 = 98g pur de H2SO4
M(H2SO4) = 2 x 1 + 1 x 32 + 4 x 16 = 98g/mol
M(Ag) = 2 x Ag = 2 x 27 = 54g/mol
98.......................98g
54........................xg
x = (54 x 98) : 98 x = 54g Ag
H2SO4 + 2Ag ---> Ag2SO4 + 1H2
98....................... 98
1...........................x x= 1 mol H2