Chemistry
Grade-9
Easy
Question
How many atoms are contained in 1 gm of the element A, which has the mass of the same atom as 3.9854 × 10-23?
- 2.509 × 1023
- 2.509 × 1020
- 6.029 × 1023
- None of these
Hint:
mass of 1 atom = 3.9854 × 10-23 gm.
The correct answer is: None of these
Given, mass of 1 atom = 3.9854 × 10-23 gm.
Number of atoms in 1 gm = 1 
3.9854 × 10-23
=2.509 
1022
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