2xH3 is 6 and 2xH2 is 4, therefore 10. Though CH3CH2O is not a molecule that exists (at least not anywhere near stably).
To answer your question on how many hydrogen atoms are there in caffeine, the scientific answer would be 10 atoms of hydrogen.
There are 4 hydrogen atoms in CH4O
There are two atoms of Hydrogen in the molecule.
Pentyne is CHCCH2CH2CH3. This compound has 8 hydrogen atoms.
2x2= 4 hydrogen atoms (2x1= 2 oxygen atoms).
To answer your question on how many hydrogen atoms are there in caffeine, the scientific answer would be 10 atoms of hydrogen.
Three-quarters of the Sun's mass is hydrogen. How many hydrogen atoms are in the Sun?
There are 4 hydrogen atoms in CH4O
There are two atoms of Hydrogen in the molecule.
Fructose has 6 hydrogen atoms.
Pentyne is CHCCH2CH2CH3. This compound has 8 hydrogen atoms.
Decane has 10 carbon atoms and 22 hydrogen atoms.
There are 4 atoms of hydrogen in 2H2O.
2 hydrogen atoms.
There are 4 hydrogen atoms in ammonium hydroxide (NH4OH).
2x2= 4 hydrogen atoms (2x1= 2 oxygen atoms).
The chemical formula is NH31+ so there are 3 hydrogen atoms but one of the hydrogen atoms is missing its electron.