Răspuns:
M,CuSO4= 160g/mol
C,Cu(OH)2=98g/mol
calculez masa de Cu(OH)2 din ecuatia chimic a
1mol.......................................................1mol sau, in grame
CuSO4 + 2NaOH----> Na2SO4 +Cu(OH)2
160g.........................................................98g
240g...........................................................x=240x98/160g=.......calculeaza !!!!
Explicație: