a.
134 g MgSO4.7H2O x (7*molar mass H2O/molar mass MgSO4.7H2O)
b.
134 g MgSO4.7H2O x (molar mass MgSO4/molar mass MgSO4.7H2O) = ?
Upon heating 134 g MgSO4 · 7 H2O:
(a) how many grams of water can be obtained?
(b) how many grams of anhydrous compound can be obtained?
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