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

the law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products. because atoms are only rearranged in a chemical reaction, there must be the same number of sodium atoms and chlorine atoms in both the reactants and products

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d.) gravity pulled particles of dust and gas together to form planets.