This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar): CH_3CO_2H An analytical chemist has determined by measurements that there are 0.054 moles of oxygen In a sample of acetic acid. How many moles of hydrogen are in the sample? Be sure your answer has the correct number of significant digits.

0.108mol of Hydrogen

Explanation:

The formula for the compound is: CH3COOH

From the formula of the compound,

There are 2moles of oxygen and 4moles of Hydrogen.

If for every 2moles of oxygen, 4moles of Hydrogen is present.

Then, for 0.054 moles of oxygen = (0.054 x 4)/2 = 0.108mol of Hydrogen is present

For 0.027 moles CH3COOH we have 0.108 moles H ≈ 1.1 *10^-1 moles H

Explanation:

Step 1: Data given

Acetic acid = CH3COOH

Number of moles oxygen in the sample = 0.054 moles

Step 2: calculate moles CH3COOH

In 1 mol CH3COOH we have 2 moles O

For 0.054 moles Oxygen we have 0.054/2 = 0.027 moles CH3COOH

Step 3: Calculate moles H

In 1 mol CH3COOH we have 4 moles H

For 0.027 moles CH3COOH we have 4*0.027 = 0.108 moles H ≈ 1.1 *10^-1 moles

i believe the answer is three water molecules