Chemistry

Problem

A chemist has exactly

0.750\,N_A

formula units of copper(II) sulfate pentahydrate,

\text{CuSO}_4\cdot5\text{H}_2\text{O}

. What is the mass of this sample expressed in kilograms? a)

0.250\,\text{kg}

0.187\,\text{kg}

0.120\,\text{kg}

0.0935\,\text{kg}