it means how many carbons there are
Hydrogen peroxide
H2 represents a molecule of hydrogen gas, which consists of two hydrogen atoms bonded together. Its chemical formula is simply H2.
Assuming that you mean Hydrogen, its formula is H2, hydrogen is diatomic molecule
Hydrogen peroxide
Hydrogen is a diatomic element, so the formula would be H2.The chemical symbol is H, but hydrogen usually appears as H2.
Its H2
According to wikipedia, the formula is: 2 Na + 2 NH3 → 2 NaNH2 + H2 I hope I helped! ;)
the chemical formula of a hydrogen molecule is written H2 ( the 2 is meant to be small )
Formula: H2
NaCl + H2.
The chemical formula for hydrogen is H2, indicating that each molecule consists of two hydrogen atoms bonded together in a diatomic form.
H2