Question

What is the number of atoms present in 2.833 gms of NH3 (approximately)?

Answer 1

the molar mass of NH3 is equals to 17 gram.

Moles of NH3 in 8.5 gm =8.5/17=0.5

thus molecules in half mole NH3 is 6.022×10^23×0.5

and atoms in half mole NH3=0.5× 6.022×10^23×4

now calculate it

Answer 2

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