In a molecule of NaOH, there is 1 atom of sodium (Na), 1 atom of oxygen (O), and 1 atom of hydrogen (H). So there are a total of 3 atoms in each element of NaOH.
There are a total of 5 atoms in 2 NaOH (sodium hydroxide) - 2 sodium atoms, 2 oxygen atoms, and 1 hydrogen atom in each molecule.
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.
You can determine the number of atoms of each element in a compound by using the chemical formula of the compound. The subscripts in the formula indicate the number of atoms of each element. For example, in H2O (water), there are 2 hydrogen atoms and 1 oxygen atom.
There are 4 calcium atoms, 8 chlorine atoms, and 2 carbon atoms in 4CaCl2 (calcium chloride).
There is one hydrogen atom in one formula unit of NaOH.
There are a total of 5 atoms in 2 NaOH (sodium hydroxide) - 2 sodium atoms, 2 oxygen atoms, and 1 hydrogen atom in each molecule.
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.
7
You can determine the number of atoms of each element in a compound by using the chemical formula of the compound. The subscripts in the formula indicate the number of atoms of each element. For example, in H2O (water), there are 2 hydrogen atoms and 1 oxygen atom.
there are 3 in tottal
2
Some elements have isotopes - atoms with a different number of neutrons.
1
In each molecule of NO3, there is one nitrogen atom and there are three oxygen atoms.
4 carbon 16 hydrogen
At standard temperature and pressure, nitrogen exists in molecules with two atoms each.
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.