(Solved): This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar): ...

This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar): $${\mathrm{CH}}_3{\mathrm{CO}}_2\mathrm{H}$$ An analytical chemist has determined by measurements that there are $$0.0279$$ moles of oxygen in a sample of acetic acid. How many moles of hydrogen are in the sampie? Round your answer to 3 significant digits.