About 0.000 0001mm across.
While less than 5% of the universe is made up of atoms, hydrogen and helium make up 98% of the atoms in the universe.
Hydrogen and helium make about 98% of the atoms in the solar system !
Two elements are found.They are Hydrogen and Oxygen.
12 carbon atoms, 22 hydrogen atoms, and 11 oxygen atoms.
1
Carbon, oxygen and hydrogen.
carbon, hydrogen, and oxygen
Carbon and oxygen make up CO2, Oxygen and Hydrogen make up water.
Carbon and hydrogen atoms mostly make up lipids.
Carbon, Hydrogen, and Oxygen atoms (see page 45)
The compound C8H18 is composed of carbon and hydrogen atoms. It is an alkane known as octane, with 8 carbon atoms and 18 hydrogen atoms in its chemical structure.
There are two atoms of Hydrogen in the molecule.