Question 16 (3 points) What is the molarity of a solution that contains 81.25 g of NH3 in 1500 mL of
solution?
Your
Answer

Hey there!

Molar mass NH₃ = 17.031 g/mol

Number of moles = mass of solute / molar mass

Number of moles = 81.25 / 17.031

Number of moles = 4.7707 moles of NH₃

Volume in liters of solution :

1500 mL / 1000 => 1.5 Liters

Therefore :

Molarity = number of moles / Volume in liters

Molarity = 4.7707 / 1.5

Molarity = 3.180 M

Hope this helps!