what is the molarity, in m, of a solution of kno₃ (molecular mass = 101) that contains 404 grams of kno₃ in…
what is the molarity, in m, of a solution of kno₃ (molecular mass = 101) that contains 404 grams of kno₃ in 2.00 liters of solution?
Answer
Explanation:
Step1: Calculate moles of KNO₃
Moles = $\frac{mass}{molar\ mass}$, so moles of KNO₃ = $\frac{404\ g}{101\ g/mol}=4\ mol$
Step2: Calculate molarity
Molarity (M) = $\frac{moles\ of\ solute}{volume\ of\ solution\ in\ liters}$, so M = $\frac{4\ mol}{2.00\ L}=2\ M$
Answer:
2 M