Solution: Phosphorus tribromide is a liquid with a density of 2.852 g/cm3. A beaker contains 0.4875 moles of this compound.
a) What is the chemical formula of phosphorus tribromide?
b) What is the volume of liquid in milliliters (mL)?
c) How many molecules of phosphorus tribromide are in the beaker?
d) How many atoms of bromine are in the beaker?