Chapter 3, Problem 8E

Determine the number of moles of Br₂ in a sample consisting of (a) $4.04\times {10}^{12}$ molecules; (b) $5.78\times {10}^{24}$ Br atoms (assuming that the Br atoms react completely to form Br₂); (c) 7.82 kg bromine (d) 3.56 L liquid bromine $\left(\text{d = 3}\text{.10 g/mL}\right)$ .