Question

mass of an element is 6.64 *10^-23 gram calculate the number of Gram atoms moles in 40 kg of the element

Answer 1

Mass of 1 atom = 6.664 x 10-23 gm

1 Gram atom = mass of 1 mole atoms = 6.023x 1023 x mass of one atom

=6.023x 1023 x6.664 x 10-23= 40.13 gm = 0.004 kg

So,

Number of gram atoms in 40 kg = 1000