Chemistry

Problem

A hydrate of copper(II) sulfate has the formula

\text{CuSO}_4 \cdot x\,\text{H}_2\text{O}

. Heating a 5.000 g sample of the hydrate to constant mass leaves 3.196 g of anhydrous

\text{CuSO}_4

. Determine the mass percent of water in the hydrate. a) 63.9\% b) 56.4\% c) 36.1\% d) 28.0\%