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 are 9 nitrogen atoms, 3 phosphorus atoms, 12 hydrogen atoms, and 4 oxygen atoms in (NH4)3PO4.
In 4CaCO3, there are a total of 4 calcium (Ca) atoms, 4 carbon (C) atoms, and 12 oxygen (O) atoms.
There are 6 atoms in the compound K2CO3: 2 potassium atoms (K), 1 carbon atom (C), and 3 oxygen atoms (O).
There are 3 atoms of oxygen in potassium carbonate K2CO3.
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.
There are 2 potassium atoms, 1 carbon atom and 3 oxygen atoms - K2CO3
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.
2
there are 3 in tottal
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