Three oxygen atoms.
If you mean the neutral gas Krypton , its symbol is Kr.
There is no such compound as silicon sulfate. Do you mean silicon sulfide, SiS2 ?
Perhaps you mean CaCO3 - that's calcium carbonate. CaCO2 doesn't seem to be a common compound.
The chemical formula for the compound is NaHCO3. If you meant the name of the compound, it's Sodium Bicarbonate, more commonly known as Baking Soda.
PCl3 is the formula. This is the compound we know as phosphorus trichloride.
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Symbols are the chemical symbols of elements.Number are the number of a specific atom in the molecule or formula unit. For example: Na2SO4- Na, S, O are the chemical symbols of sodium, sulfur and oxygen- 2 is the number of sodium atoms in the formula unit; 4 is the number of oxygen atoms in the formula unit
It represents the amount of the substance. It can mean the number of atoms, molecules, formula units, or moles.
A chemical formula provides information on the types and number of atoms in a molecule. The symbols represent the elements present, with subscripts indicating the ratio of each element. This helps to understand the composition and structure of a compound.
No such substance as 'CaCo2'. Do you mean calcium carbonate, in which case the formula is 'CaCO3'? or do you mean an alloy(mixture) of 1 part calcium(Ca) to 2 parts cobalt(Co)?
I expect you mean, toluene, whose chemical formula is C7H8. Please see the link.
Well, tne chemical formula is MnO2. If you mean the name of it, that is manganese dioxide.
I assume that you mean sodium chloride, in which case the chemical formula is NaCl.
If you mean potassium Cyanide, the formula is KCN
Do you mean chemical formula? C12H22O11.
In a chemical formula, the term "mole" represents a unit of measurement that indicates the amount of a substance present. It is used to quantify the number of atoms, molecules, or ions in a sample of a substance.
There is no chemical with the formula AuC1. You most likely mean AuCl, which is gold I chloride.