20 g of K3PO4 dissolved in 350 ml water,to come up with 500 ml solution.

calculate :
molecular weight
Equivalent weight
molarity
normality
molality

2 answers

And you know how to do which ones? What do you not understand. The definitions is where you start.
How Ican calculate equivalent weight
How Ican convert 500 ml to 500 kg to use it in molality

thank you