4. A student had a sample of CaCl2 • nH20. He heated the sample until the mass did not change. From this data, calculate (a). the percentage of CaCl2 in the original sample and (b). the formula of the hydrate Mass of crucible + cover = 28.39 g OM Mass of crucible + cover + sample 30.41 g Mass of crucible + cover + residue = 29.75 %3D %3D

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