Joan’s initial nickel (ii) chloride sample was green and weighed 4.3872 g. after the dehydration reaction and removal of excess thionyl chloride, the residue was yellow, and had a mass of 2.3921 g.
(a) was the nickel chloride sample a hydrate?
(b) if the data indicates a hydrate, calculate x, the number of waters of hydration.
show your work.
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