rastvori

Imas zapreminu rastvora i njegovu gustinu, odakle se lako izracunava masa rastvora (nadam se da to znas). 5% rastvor KCl-a znaci da u 100g rastvora imas 5g KCl, i pomocu tog podatka ces lako naci resenje (ili preko proporcije, ili preko formule za maseni udeo).

Pozdrav! :)

"A new scientific truth does not triumph by convincing opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it" Max Planck

koliko vam ispada resenje?

21,3g treba da ispadne :)