Question

Mass of one atom of element a is 3.9 85 4 into 10 to the power minus 23 km how many atoms are contained in 1 gram of the element

Answer 1

Given

3.9854 x 10^-23 gm = 1 atom of element 'a'

1 gm = 1/(3.9854 x 10^-23) atoms

= 0.25 x 10^23

= 2.5 x 10^22 atoms