You want how many moles of CuSO4?
M x L = moles = 2.000 x 0.250 L = ??
How many grams CuSO4 is that?
moles = grams/molar mass and solve for grams CuSO4 = xx grams CuSO4.
BUT you don't have CuSO4. You have CuSO4.5H2O so convert xx g CuSO4 to zz grams CuSO4.5H2O.
That will be done easily by
[xx g CuSO4 x (molar mass CuSO4.5H2O/molar mass CuSO4)] = ?? and weigh out that many grams of CuSO4.5H2O. Place in a 250 mL volumetric flask, add enough water to dissolve all of the solid, add water to the mark, shake until the solution is thoroughly mixed.
Prepare 250mL of 2.00M CuSO4 from CuSO4 x 5H2O
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