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The chemical formula of sulfuric acid is H2SO4.
Formula: Li2O
H2O A compound formed when hydrogen gas burns with oxygen.
What you write for an ionic compound is called the formula unit, but the formula unit is almost always the same as the empirical formula. The answer to your question could not be the molecular formula because an ionic compound is not a molecule.
With a molecular formula we can calculate the molar mass and the chemical composition of a compound, also we can write chemical equations.
The chemical formula of sulfuric acid is H2SO4.
Formula: AgI
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CaO.
Formula: Li2O
Formula: BCl3
You use the prefix of the words to write the formula for a covalent compound, example "di-" is the prefix and it is 2.
Pb3(PO4)2
Barium Fluoride is BaF2.
It is written as Na2CO3. It is a base compound.
The formula for lithium oxide is Li2O.
CaF2