Respuesta :
Answer: There are [tex]0.292 \times 10^{-4} mol[/tex] are present in [tex]4.97 \times 10^{-4} g[/tex] of ammonia.
Explanation:
Given: Mass of ammonia = [tex]4.97 \times 10^{-4} g[/tex]
As number of moles is the mass of substance divided by its molar mass.
Hence, moles of ammonia (molar mass = 17 g/mol) are calculated as follows.
[tex]No. of moles = \frac{mass}{molar mass}\\= \frac{4.97 \times 10^{-4} g}{17 g/mol}\\= 0.292 \times 10^{-4} mol[/tex]
Thus, we can conclude that there are [tex]0.292 \times 10^{-4} mol[/tex] are present in [tex]4.97 \times 10^{-4} g[/tex] of ammonia.
