Question

An atom of an element weighs 6.64 into 10 to power minus 23 gram calculate g atoms of element in 40 kg

Answer 1

Answer:

Hey.

Here is the answer.

weight of 1 atom = 6.644×10^-23 g

so, no. of atoms in 40 kg

= 40×10^3 / 6.644×10^-23

= 6.02046 × 10^26 atoms

As, 1 gram atom = no. atoms in one mole = 6.02×10^23

so, no. of gram atom = 6.02046×10^26/6.02×10^23

=1000 gram atoms