Question

50 g sare 500 g sol c=?
m apa=?​

Answer 1

ms(masa solutie)=500g

md(masa dizolvant)=50g

c=?

m apa=?

c=md/ms * 100

c=50/500 * 100

c=50/5 (am siplificat pe 500 cu 100)

c=10

m H2O=ms-md

mH2O=500g-50g

mH2O=450g

succes!