Question

40 de grame de piatra vanata sa dizolva in 160 g H2O. Solutia obtinuta:

a)are concentratia procentuala 12,8%

b)contine 160 de grame de solvent

c)contine 9,68% H​

Answer 1

Răspuns:

md=40g

mapa =160g

ms=md+mapa =40+160=200g

C=md×100/ms=40×100/200=20%