Chapter 2, Problem 48E

Determine the number of moles of the compound and determine the number of moles of each type of atom in each of the following:

(a) $\text{2}\text{.12 g of potassium bromide, KBr}$

(b) $\text{0}{\text{.1488 g of phosphoric acid, H}}_{\text{3}}{\text{PO}}_{\text{4}}$

(c) ${\text{23 kg of calcium carbonate, CaCO}}_{\text{3}}$

(d) $\text{78}{\text{.452 g of aluminum sulfate, A1}}^{\text{2}}{\left({\text{SO}}_{\text{4}}\right)}_{\text{3}}$

(e) $\text{0}{\text{.1250 mg of caffeine, C}}_{\text{8}}{\text{H}}_{\text{10}}{\text{N}}_{\text{4}}{\text{O}}_{\text{2}}$