calculez masa de oxid pur
p=m,px100/m,i---> m,p= 80x95/100g=76gMgO
DIN ECUATIA REACTIEI CALCULEZ MASA DE APA SI DE Mg(OH)2
stiind M,MgO=40g/mol, MH2O=18g/mol, MMg(OH)2=68g/mol
1mol......1mol.........1mol
MgO + H2O------> Mg(OH)2
40g.... 18g...............68g
76............X......................Y
X= 76X18/40=.....................CALCULEAZA !!
Y= 76X68/40=.............................
