-calculez masa de substanta dizolvata in apa
46/100= md/(md+540)
md= 460g
- ms= md+m,apa= > 1000g solutie
-titrul unei solutii indica masa de substanta continuta de 1ml solutie
1,15g....................1ml
460g......................x= x=400ml= 0,4l
ms=1000g Vs=400ml ro=m/v are o densitate cam mare ???? verifica !!!