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Question

The number of molecules in 1.7 gram of ammonia will be:
  1. 0.1
  2. 6.02×1022
  3. 6.02×1023
  4. 3.02×1023

A
0.1
B
6.02×1023
C
6.02×1022
D
3.02×1023
Solution
Verified by Toppr

1.7 gram of ammonia (molecular weight 17 g/mol) =1.7 g17 g/mol=0.1 mol.
The number of molecules in 1.7 gram of ammonia =0.1 mol×6.02×1023 molecules/mol=6.02×1022 molecules

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