ANSWER
The number of moles of NH3 in 119g of NH3 is 7 moles
STEP-BY-STEP EXPLANATION:
Based on the question provided, the mass of ammonia was given to be 119g
Given information
Mass of the ammonia = 119g
To find the molar mass of NH3, we need to get the following data from the periodic table
• The molar mass of nitrogen = ,14 g/mol
,
• The molar mass of hydrogen = ,1 g/mol
The next thing is to find the molar mass of ammonia,
[tex]\begin{gathered} NH_3\text{ = 14 + (3 }\cdot\text{ 1)} \\ NH_3\text{ = 14 + 3} \\ NH_3\text{ = 17 g/mol} \end{gathered}[/tex]
The mole of ammonia can be gotten using the below formula
[tex]\begin{gathered} \text{Mole = }\frac{\text{ reacting mass}}{\text{ molar mass}} \\ \text{Mole = }\frac{\text{ 119}}{17} \\ \text{Mole = 7 moles} \end{gathered}[/tex]
The number of moles of NH3 in 119g of NH3 is 7 moles
