Question

Q3. calculate the age percentage f water of crystalizaton in a sample of blue vitrol . (molecular mass f blue vitrol = 249.5)
a)42 percent
b)50 percent
c)46 percent
d)36 percent

Answer 1

5H2O=90.08=16*5=80oxygen+1.008*10 hydrogen =90.08 %OF water of crystallization in blue vitriol is 90.08/249.5*100=36.1%ans