ms=200g
C1=20%MgO
C2=80%C
md1=?
md2=?
md1=200×20=100=40gMgO
md2=200×80/100=160gCaO
40 95g
MgO +2HCl=> MgCl2 +H2O
40g xg
MMgO =24+16=40g/mol
MMgCl2 =24+2×35,5=95g/mol
x=40×95/40=calculează
56g 111g
CaO+ 2HCl => CaCl2 +H2O
160g yg
McaO =40+15=56g/mol
MCaCl2=40+2×35,5=111g/mol
y=160×111/56=calculează
MgCl2 clorura de magneziu
CaCl2 clorura de calciu