One atom of an element x weighs 6.664 x 10^-23g. Thw number of gram at

1.	One atom of an element x weighs 6.664 x 10^-23g. Thw number of gram atoms in 40 lg of it is
Answer» 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

One atom of an element x weighs 6.664 x 10^-23g. Thw number of gram atoms in 40 lg of it is

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