Question

Calculati pentru carbonat de aluminiu, azotat de magneziu:
- Raportul Atomic
- Raportul de masa
- Masa Moleculara
- Compozitia procentuala

Answer 1

Al2(CO3)3

raport atomic=r.a.=2Al :3C :9 O=2:3:9

raport de masa =r.m.=2AAl :3AC :9A O=2.27:3.12:9.16=54:36:144=3:2:8 (s-a

simplif.cu 9)

M=54+36+144=234

Comp. proc .

234 g Al2( CO3)3 --------54 g Al----------36 g C-----------144 g O

100g-------------------------------X-------------------Y-----------------Z

X=100.54:234=23,07 la suta Al

Y=100.36:234=15,38 la suta C

Z=100.144:234=61,53 la suta O