Ammonia (NH3) is commonly used in household cleaners. If there were 5.31 × 1023 molecules of NH3, what was the mass of ammonia in grams?
____________ g NH3. Do NOT enter unit in your answer. Report your answer with 3 SFs.
mols = 5.31E23/6.02E23 = ?
grams = mols x molar mass = ?