Answer
atomic mass for hydrogen is 1.008 grams for each 1mol of hydrogen , which means avogadros number for each 1mol is 6.02x10^23 atoms , so if we have 1.10 grams hydrogen this means that there is 6.57x10^23 atoms results from 1,10x6.02x10^23.
atomic mass for chromium is 52.00 grams for each mol, if we have 14.70 grams Cr< this means 0.2826 mol of Cr results from
14.70/52.00 =0.2826
number of Cr atoms =0.2826 x 6.02x10^23 atoms = 1.70x10^23 atoms
1.10 grams Hydrogen has more atoms than 14.70 grams Chromium.
Work Step by Step
We can find the number of atoms in 1.10g H as
$1.10g\space H\times \frac{1mol\space H}{1.008g\space H}\times \frac{6.022\times 10^{23}H\space atoms}{1mol\space H}=6.57\times 10^{23}H\space atoms$
Similarly the number of atoms in 14.7g of Chromium can be determined as
$14.7g\space Cr\times \frac{1mol\space Cr}{52.00g\space Cr}\times\frac{6.022\times 10^{23}Cr\space atoms}{1mol\space Cr}=1.70\times 10^{23}Cr\space atoms$
