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NH3; One atom of nitrogen and three atoms of hydrogen.
2 Carbon atoms, 4 Hydrogen atoms, 2 Oxygen atoms
The chemical formula shows you this. The subscripted number next to each element shows how many atoms are present in a molecule or formula unit. If no number is shown, then only one atom of that element is present.
H2S04 is sulfuric acid. In total it has seven atoms: two hydrogen, one sulphur and four oxygen. In 2 moles of it you would have double the number of atoms, so 14.
One molecule of C6H12O6 has 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms.
C6H12O6. Six carbon atoms, 12 hydrogen atoms and six oxygen atoms.
7
3
There are five atoms
2
there are 3 in tottal
Some elements have isotopes - atoms with a different number of neutrons.
NH3; One atom of nitrogen and three atoms of hydrogen.
1
2
In each molecule of NO3, there is one nitrogen atom and there are three oxygen atoms.
2 Carbon atoms, 4 Hydrogen atoms, 2 Oxygen atoms