Problem 122
A \(0.7221-g\) sample of a new compound has been analyzed and found to contain the following masses of elements: carbon, 0.2990 g; hydrogen, 0.05849 g; nitrogen, 0.2318 g; oxygen, 0.1328 g. Calculate the empirical formula of the compound.
Problem 123
When \(2.004 \mathrm{g}\) of calcium is heated in pure nitrogen gas, the sample gains \(0.4670 \mathrm{g}\) of nitrogen. Calculate the empirical formula of the calcium nitride formed.
Problem 124
When \(4.01 \mathrm{g}\) of mercury is strongly heated in air, the resulting oxide weighs \(4.33 \mathrm{g}\). Calculate the empirical formula of the oxide.
Problem 125
When \(1.00 \mathrm{g}\) of metallic chromium is heated with elemental chlorine gas, \(3.045 \mathrm{g}\) of a chromium chloride salt results. Calculate the empirical formula of the compound.
Problem 126
When barium metal is heated in chlorine gas, a binary compound forms that consists of \(65.95 \%\) Ba and \(34.05 \%\) Cl by mass. Calculate the empirical formula of the compound.
