The number of atoms in 4.25 g of NH, is approximately29 – InterviewSolution

InterviewSolution

1.

The number of atoms in 4.25 g of NH, is approximately29

Answer»

Molecular mass of ammonia= 14+3=17

In 1 molecule (nh3) there are 1+3=4 atoms

1 mole (17 g) has Avogadro number of molecules

17 g= 1 mole

4.25g=4.25/17=0.25 moles

1 mole = 4×6.022×10^23 atoms

0.25 or 1/4 mole =6.022×10^23 atoms

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