Question

Which two elements make up the most common compound in the human body?

Answer 1

The two elements that makes the most common compound in the body are hydrogen and oxygen.

Step-by-step explanation:

The three most abundant elements in the human body are oxygen, carbon and hydrogen. Oxygen constitute 65% of the body mass, carbon constitute 18% while hydrogen constitute 9.5% of the human body. Most of the element found in the body are found within the compound in the body.

The most known compounds present in the human body are water, protein, carbohydrate, Fat and mineral . The most abundant compound found in the body is water which constitute about 62% . Most of the hydrogen found in the body are embedded in water. The oxygen too in the water molecule also reflects the abundant of oxygen in the body.

The two elements that makes up the most common compound in the body is definitely oxygen and hydrogen.

Answer 2

The answer is: Hydrogen and Oxygen.

Step-by-step explanation:

Almost 99% of the human body's mass is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus, in that order.

Element Symbol % in body

Oxygen O 65.0

Coal C 18.5

The human body is composed of 60% water, that is, H2O.

The answer is: Hydrogen and Oxygen.