No. Of atoms in 4.25g of ammonia is ??

1.	No. Of atoms in 4.25g of ammonia is ??
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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