Question

Calculati compozitia procentuala a hidroxilului de magneziu. Imi trebuie pana maine plsss.

Answer 1

Mg (OH )2

-se calculeaza masa molara

M=24 + 2.16 + 2=58-------> 58g/moli

- se calculeaza comp. proc .prin masa molara

58 g Mg(OH)2------------24g Mg--------32 g O--------2g H

100 g--------------------------x-------------------y------------------z

x=100 .24 :58=41,38 % Mg

y=100 .32 : 58=55,17 % O

z=100 . 2 : 58=3,45% H