Answer:
0.69 moles of NH₃ are in 3.0 L solution of 0.23 M NH₃
Explanation:
Molarity or Molar Concentration is the number of moles of solute that are dissolved in a certain volume. In other words, molarity reflects the concentration of a solution, indicating the amount of moles of solute that appear dissolved in each liter of the mixture.
The Molarity of a solution is determined by:
[tex]Molarity=\frac{number of moles of solute}{volume}[/tex]
Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].
In this case you know:
Replacing in the definition of molarity:
[tex]0.23 M=\frac{number of moles of solute}{3 L}[/tex]
Solving:
number of moles of solute= 0.23 M* 3 L
number of moles of solute= 0.69
0.69 moles of NH₃ are in 3.0 L solution of 0.23 M NH₃
