We did not find any results for 'if the solubility of cuso4.5H2O at 30 degree celcus is 25 gram per 100gram of H2O.what is the maximum mass of crystal that will be obtained from 10gram?

10 grams of what?

If you had 10 g CuSO4.5H2O in 100 g H2O then you want get any back.

If the 10 g is 10g solution, and the solution is saturated, then you will get
25 g x (10/100) = g CuSO4.5H2O