Crude oil contain compounds of O, C, H, N and not chemical elements.
Carbon, Hydrogen, and Oxygen. CH2O is the chemical formula.
The five chemical elements found in proteins are carbon, hydrogen, oxygen, nitrogen, and sulfur.
Hydrogen is H Iodine is I Nitrogen is N Nobelium is No Carbon is C
Oxygen is the most abundant element in the human body, followed by Carbon, Hydrogen and Nitrogen. Calcium is abundant, as well.
carbon hydrogen oxygen and nitrogen
Carbon, Hydrogen, Nitrogen and Oxygen
C8H10N4O2 - Carbon, Hydrogen, Nitrogen, and Oxygen make up caffeine.
Carbon, hydrogen, oxygen, nitrogen, and traces of all the others.
Carbon, Hydrogen, Nitrogen, Oxygen
carbon, hydrogen, oxygen, and nitrogen.
The following four elements make up 90 percent of the mass of living things: Oxygen - 65% Carbon - 18.5% Hydrogen - 9.5% Nitrogen - 3.2%
carbon = 4 hydrogen = 1 nitrogen = 3