Question

One atom of element X weighs 6.644*10 to the power -23g. Calculate the number of gram atoms in 40 kg of it

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Answer 1

Answer:

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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

Thanks.

Answer 2

Explanation:

Find the perimeter of the given rectangle:

1 point

Captionless Image

7 5/6

6 2/3

7 1/6

8 17/20