Determine the empirical formula for a compound when given the percent composition of the element in the compound.
A compound contains only nitrogen and oxygen. Experimental evidence reveals that it is 74.0% by mass oxygen and has a molar mass of 108 g/mol. The empirical formula is NaOb where …
… a is:
… b is:
The molecular formula is NcOd where …
… c is:
… d is:
A compound containing only sulfur and oxygen is found to contain 57.19% sulfur and 42.81% oxygen. The molar mass of the compound is 224.26 g/mol. The molecular formula is SaOb where …
A compound containing only carbon and hydrogen is found to contain 85.63% carbon and 14.37% hydrogen. It has a molar mass of 70.13 g/mol. The empirical formula is CaHb where …
The molecular formula is CcHd where …
... c is:
... d is:
A compound containing carbon, hydrogen, and oxygen is found to contain 71.39% carbon, 9.59% hydrogen, and 19.02% oxygen. The empirical formula is CaHbOc where …