Question

Calculati masa de solutie de concentratie 40% care dizolvata are 60g substanta

Answer 1

c = md*100/ms
md = 60 g
c = 40%
ms = md*100/c = 60*100/40 = 150 g soluție

Answer 2

[tex]c=\frac{md*100}{ms}~ md~=~60 ~g c~=~40[/tex]
ms = md*100/c = 60*100/40 = 600.40=150 g
/ = fractie