How many molecules (not moles) of nh3 are produced from 8.95×10−4 g of h2?

 1.8 x 10²³molecules

Explanation:

Given parameters:

Mass of H₂ = 8.95 x 10⁻⁴g

Unknown:

Number of molecules of NH₃ = ?

The equation of the reaction: N₂ + 3H₂ ⇄ 2NH₃

To solve this problem:

           Number of moles of H₂ =

           Number of moles =

          Number of moles = 0.00045mol

          3 moles of H₂ produced 2 moles of NH₃

         0.00045mol of H₂ yields 0.000299mol of NH₃

To find the number of molecules of NH₃ produced, we use the expression below:

        Number of molecules = number of moles x 6.02 x 10²³

  Number of molecules of NH₃ = 0.000299 x 6.02 x 10²³ =

                                                                              1.8 x 10²³molecules

b.final