Calculate the number of gram atoms present in the following masses.
(i) 12.69 g of hydrogen, (ii) 40.089 g of calcium (Given, atomic mass of H = 1.008 amu and atomic mass of Ca = 40.08 amu)

Explanation

(i) Number of gram atoms of hydrogen
`=("Mass in grams")/("Gram atomic mass")`
`=12.69/1.008 = 12.59`
(ii) Similarly,
Number of gram atoms of calcium
`=(40.08)/(40.08) = 1.000`