Question

se dizolva 60 g sare in 140 g apa. sa se calculeze masa sulutiei si concentratia

Answer 1

md=60g
mapa=140g
ms=?
c=?

ms=md*100 supra c
ms=60*100 supra c
ms=6000 supra c

ms=600
aflam c:
c=md supra ms * 100
c=60g supra 600*100
c=6000 supra 600
c=6000:600
c=10
ms=6000 supra 10
ms=6000:10
ms=600

Answer 2

md= 60g
ms= md+m,apa=> 60g+140g= 200g

c=mdx100/ms
inlocuieste si calculeaza !!!