A solution has a concentration of 5.00 M. How many moles are in 852 mL of the solution?
Question:
A solution has a concentration of 5.00 M. How many moles are in 852 mL of the solution?
Molarity:
The molarity of a solution is an expression of the relative amount of solute dissolved in the solution. In preparing solutions expressed in molairty, M, the equation below can be used:
{eq}\rm M = \dfrac nV {/eq}
- {eq}\rm n{/eq} is the moles of the solute
- {eq}\rm V{/eq} is the volume of the solution
Answer and Explanation: 1
We convert the given volume, V, in liters by using the conversion factor 1 L = 1000 mL:
{eq}\rm V = 852~mL \times \dfrac{1~L}{1000~mL} = 0.852~L {/eq}
Then, using the given molar concentration , M, 5.00 M, we can compute for the moles of the solute, n, as follows:
{eq}\rm n = MV = 0.500\dfrac{mol}{L} (0.852~L) = \boxed{\mathbf{0.426~mol}} {/eq}
Learn more about this topic:
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Chapter 8 / Lesson 4What is molarity? What is molality? Compare molarity vs molality by viewing molality and molarity formulas, how to calculate molarity and molality, and examples.