Question

One atom of/an element 'a' weighs 6.644×10^-23g.Calculate the no. Of gram atoms in 40kg. Of it

Answer 1

Answer:

1. Atom weighs =6.644 x10^-24

1 mole of atoms weight =

6.022 x10^23 x6.644 x10^-23=40gm

Molecular mass =40gm

Mole = given mass /molecular mass

Mole. = 40 X 10^-3 gm/40

=0.001 moles