Question

calculate the number of molecules of 0.25 moles of ammonia

Answer 1

No. of molecules in 0.25 mole of NH₃
= 0.25 × Avogadro's number
= 0.25 × 6.022×10²³
= 1.5 × 10²³ molecules Ans.

Answer 2

0.25× avagadro no
0.25×6.022×10^23
solve it