Question

ofer 100 de puncte!!!!! problema 8. am raspunsul dar nu stiu rezolvarea va roog !!!!

Answer 1

M ch (CuSO4*5H2O)= 160+5*18=160+90=250

250 g ch.....90 g H2O

500 g ch......x= 180g H2O

md CuSO4= ms*c/100=700*40/100=280 g

m H2O=ms-md=700-280=420 g

m H2O total= 180g + 420 g= 600 g

V=m/ ρ =600 g/ 1g/cmc=600cmc