Question

calculate the number of molecules present in 170 g of NH3​

Answer 1

Answer:

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Answer 2

Answer:

Explanation:

molar mass of NH₃= 14 + 1 × 3

                              = 14 + 3

                              = 17 g

moles= mass/molar mass

         = 170/17

         = 10 mol

number of molecules = moles × Na (avogadro's no.)

                                   = 10 × 6.022 × 10²³

                                  = 6.022 × 10²⁴