Question

Sa se determine formula moleculara a lactozei,o substanta naturala din clasa glucidelor,care are in molecula 11 atomi de oxigen si compozitia procentuala urmatoare: 42,10%C , 6,43%H , 51,46%O

Answer 1

C : 42,10%     42,10/12 = 3,508     | : 3,21685 = 1   | x 11 = 11
H :   6,43%     6,43/1 = 6,43           | : 3,21685 = 2   | x 11  = 22
O : 51,47%   51,47/16 = 3,21685   | : 3,21685 = 1   | x 11   = 11 
C11H22O11