Calculate the percent composition, and determine the molecular and empirical formula
for the nitrogen-oxygen compound that results when 12.04 grams of nitrogen is reacted
with enough oxygen to produce 39.54 grams of the compound. The molar mass of the
compound is 92.02 g/mol.
Hint: To do this, you need to subtract the nitrogen from the total (38.54 g) to get the
oxygen gram amount. If you divide the total (39.54 g) into the mass of the nitrogen
and oxygen you will get the percent of each element in the compound.
Use the gram amounts of each element to find the moles of each element, then divide
by the lowest mole value to get the empirical formula. From here use the formula:
n = molar mass
empirical formula mass
to find the molecular formula.
