acid sulfuric = H2SO4
masa moleculara:
M = 2Ah+As+4Ao = 2x1+32+4x16 = 98 g/mol
raport atomic:
H:S:O = 2:1:4
raport masa:
H:S:O = 2g : 32g : 64g /:2 = 1:16:32
compozitie procentuala:
in 98 g H2SO4 .... 2g H ...... 32g S ........ 64g O
100% .....................x% ............. y% .............. z%
= 2,05 = 32,65 = 65,31
