Morenosite is a hydrate of nickel sulfate with the formula NiSO4.XH2O. A student was assigned to determine the value of X in the formula. This student took a 5.095 g sample of the hydrate, dissolved it in water and treated it with an excess of barium chloride solution. After carefully collecting the precipitate and drying it in an oven, he obtained a mass of 4.234 g for the precipitate. From this data, determine the value of X in the formula. Hint: Remember to apply the solubility rules when determining the precipitate.
A) 4
B) 5
C) 6
D) 7
E) 8
Correct Answer:
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