Which has more atoms: 1.10g of h atoms or 14.7g of cr atoms

Hydrogen has a molar mass of 1.008 grams per mole so 1.10g is slightly over a mole

Explanation:  

Chromium has a molar mass of 51.996g. 14.7 is much less than that. Since the mole is basically a measure of the number of atoms, once you have moles you can go anywhere. You can compare them directly now. Hydrogen would have more atoms

The math would be :

1.10g *1mol/1.008g*(6.022x10^23atoms)/1mole= 6.56x10^23 atoms of H

14.7g*1mole/51.996g*(6.022x10^23atoms)/mole= 1.70x10^23 atoms Cr

By Marie Cooper

"the periodic table is arranged in order of atomic number."