One Ca (Calcium) and Two Cl (Chlorides)
there are 3 in tottal
4 carbon 16 hydrogen
C6H12O6. Six carbon atoms, 12 hydrogen atoms and six oxygen atoms.
There are 6 hydrogen atoms, 3 phosphorus atoms, and 4 oxygen atoms in the formula H3PO4.
In one molecule of CO2, there is one atom of carbon and two atoms of oxygen.
There is 1 atom of calcium in CaCl2. Each molecule of CaCl2 contains 1 calcium atom, 2 chlorine atoms, and a total of 3 atoms.
There are a total of 10 atoms in 2CaCl2. This is because each CaCl2 molecule contains 3 atoms: 1 calcium atom and 2 chlorine atoms. Multiplying by 2, there are 6 atoms in 2 CaCl2 molecules, and since there are 2 molecules, the total number of atoms is 10.
There are three atoms in CaCl2 (calcium chloride) - one calcium atom and two chlorine atoms. It might be argued that there are ions inside the molecule instead of atoms. In that case there is one calcium ion and two chlorine ions.
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.
Three.
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.