0.499g 0f CuSO4.xH2O when heated to constant weight gave a residue of 0.346g. the value of x is? (Cu = 63.5, S = 32.0, O = 16, H = 1)
-
A.
0.5 -
B.
2.0 -
C.
3.0 -
D.
4.0 -
E.
5.0
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