  Crushed stone, for example, has a density of 100 pounds per cubic foot (lb/ft3), which is 1600 kilograms per cubic meter (kg/m3), which is 1.6 metric tons per cubic meter. Packed earth is about 95 lb/ft3, or 1520 kg/m3.
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Best Answer: HBr has the IUPAC name of hydrogen bromide. When it is dissolved in water (rather than being a pure liquid) HBr(aq) would definitely act as an acid, hence the name hydrobromic acid. Both names could be correct, depending on the context and whether you are using strict IUPAC naming or using the common name.