Question

One atom of element X weighs 6.644×10^-23g.calculate the number of gram atom in 40 kg of it.

Answer 1

Hey.

Here is the answer.

As weight of 1 atom = 6.644×10^-23 g

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 g
= 0.004 kg

So,

Number of gram atoms in 40 kg

= 40 kg/ 0.004 kg = 1000


So, no. of gram atoms is 1000 gram atoms of X

Thanks.

Answer 2

Answer:

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Explanation: Hey.

Here is the answer.

As weight of 1 atom = 6.644×10^-23 g

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 g

= 0.004 kg

So,

Number of gram atoms in 40 kg

= 40 kg/ 0.004 kg = 1000

So, no. of gram atoms is 1000 gram atoms of X

Thanks.