Question

HELP, CHIMIE, URGENT!​

Answer 1

Răspuns:

1.

MMgO=24+16=40g/mol

MHCl =1+35,5=36,5g/mol

n=m/M

m=40×8=320gMgO

40g......2×36,5g

MgO +2 HCl => MgCl2 + H2O

320g.....xg

x=320×2×36,5/40=calculează

2. MH2SO4 =2×132+4×17=98g/mol

1mol H2SO4 =98g

MCO2=12+2×16=44g/mol

m=2×44=88g

MAl2O3 =2×27+3×16=102g/mol

m=3×102=306g