Nitrous oxide or N2O
Oxygen is an element. The oxygen in our atmosphere typically combines with itself, as does the nitrogen, forming a diatomic molecule--O2. So the two atoms in a molecule of oxygen would both be oxygen atoms.
The chemical formula for this compound would be NI3, as there is one nitrogen atom for every three iodine atoms.
NH3 - the common name for nitrogen trihydride would be ammonia.
Na2SO4
The atoms in molecules of oxygen gas (O2) are held together by a double covalent bond, where two pairs of electrons are shared between the oxygen atoms. In contrast, the atoms in molecules of nitrogen gas (N2) are held together by a triple covalent bond, where three pairs of electrons are shared between the nitrogen atoms.
The formula would thus be C2N2O.
Oxygen is an element. The oxygen in our atmosphere typically combines with itself, as does the nitrogen, forming a diatomic molecule--O2. So the two atoms in a molecule of oxygen would both be oxygen atoms.
There are a total of 12 oxygen atoms in two calcium carbonate formula units. Each formula unit of calcium carbonate (CaCO3) contains 3 oxygen atoms, so for two formula units, there would be 6 oxygen atoms in each unit, totaling 12 oxygen atoms.
The chemical formula for this compound would be NI3, as there is one nitrogen atom for every three iodine atoms.
NH3 - the common name for nitrogen trihydride would be ammonia.
The formula of ammonium sulfate is (NH4)2SO4. To calculate the total number of atoms, you would need to add up the individual atoms present in the formula. In this case, there are 2 nitrogen atoms, 8 hydrogen atoms, 1 sulfur atom, and 4 oxygen atoms, giving a total of 15 atoms in one molecule of ammonium sulfate.
Na2SO4
The atoms in molecules of oxygen gas (O2) are held together by a double covalent bond, where two pairs of electrons are shared between the oxygen atoms. In contrast, the atoms in molecules of nitrogen gas (N2) are held together by a triple covalent bond, where three pairs of electrons are shared between the nitrogen atoms.
This molecule would be called dinitrogen tetroxide.
One formula unit of O represents a molecule of diatomic oxygen (O₂), which consists of two oxygen atoms. Therefore, there are two atoms in one formula of O₂. If referring to a single oxygen atom, it would simply be one atom.
As would be more apparent from its properly written formula, Zn(ClO3)2, each formula unit contains 6 oxygen atoms, the product of the subscript immediately following the oxygen atomic symbol and the subscript following the parenthetical formula of the chlorate polyatomic ion of which the oxygen atoms present are a part.
The chemical formula "n o2 no2" seems to have a small formatting issue, but it likely refers to nitrogen (N) and oxygen (O) compounds. The products indicated by this formula could include nitrogen dioxide (NO2), which is formed when nitrogen reacts with oxygen. If the context involves a reaction, such as the combustion of nitrogen in oxygen, the primary product would be nitrogen dioxide.