Answer:
The molarity of 500.0 grams of Li₂S in a total volume of 4.44 liters is 2.448 [tex]\frac{moles}{liter}[/tex]
Explanation:
Molarity (M) is the number of moles of solute (substance that dissolves in a solvent with which it forms a solution, is in a smaller proportion) that are dissolved in a given volume.
Molarity is expressed by the following expression:
[tex]M=\frac{number of moles of solute}{ volume of solution}[/tex]
Molarity is expressed in units [tex]\frac{moles}{liter}[/tex]
Then, you must first know the amount of moles that represent the 500 g of Li₂S. For that, a rule of three is applied knowing the molar mass: if 46 g is 1 mol of Li₂S, 500 g of the compound, how many moles are they?
[tex]moles=\frac{500 g*1mole}{46 g}[/tex]
moles≅10.87
It is now possible to calculate molarity by applying the definition:
[tex]M=\frac{10.87 moles}{4.44 L}[/tex]
M= 2.448 [tex]\frac{moles}{liter}[/tex]
The molarity of 500.0 grams of Li₂S in a total volume of 4.44 liters is 2.448 [tex]\frac{moles}{liter}[/tex]
