Hydrogens chemical sign is 'H'.
Methane has a chemical formula of CH4. this means that it has one carbon with 4 hydrogens. As you see it is mainly hydrogen, but the carbon weighs more than the 4 hydrogens.
When oxygen combines with 2 hydrogens it makes water.
Covalent bonds between the hydrogens and central oxygen
Hydrogen is a chemical element with the symbol H and atomic number 1.
It has two H's and one O. Or two hydrogens and one oxygen.
The chemical formula of octane is C8H18.
To my knowledge that chemical does not exist. An 8 carbon chain is fully saturated with 18 hydrogens: (CH3)(CH2)6(CH3) This adds up to 18 hydrogens and 8 carbons. This molecule is called octane. Hope that helps.
There are 24 hydrogens in the molecular formula C22H ClN2O2.
No, except for the rare case that one of the hydrogen atoms is a different isotope they are identical.
The chemical formula H2O stands for water, a compound made up of two hydrogen atoms bonded to one oxygen atom.
H2O is 2 hydrogens plus 1 oxygen and that makes the chemical formula for water.
1. Hydrogenation