posted by lily on .
A certain volume of a .50 M solution contains 4.5g of a certain salt. What mass of the salt is present in the same volume of a 2.5 M solution?
Indicate the concentration of each ion/molecule:
A mixture of 50.0 mL of .2M KClO3 and 25.0 mL of a .20M Na2SO4.
How would you answer or set up these two problems?
first one: do by proportion.
4.5g/.5M = X/2.5 M
second one. You have K+, ClO3-, Na+, and SO4-- ions.
I will do one.
concentration of Na+= 2*.2M