Question

PLEASE HELP FAST!!! What is the molarity of a solution that contains 42.9 mol of calcium chloride (CaCl2) in a 45.0L solution?

Answer 1

The molarity of the solution is 0.95
`(moles)/(liter)`.

Step-by-step explanation:

The molarity of a solution is a measure of concentration that indicates the number of moles of solute that are dissolved in a given volume. It is calculated by dividing the moles of the solute by the volume of the solution.

`Molarity=(number of moles of solute)/(volume)`

Molarity is expressed in units
`(moles)/(liter)`.

In this case:

• number of moles of solute= 42.9 moles
• volume= 45 L

Replacing in the definition of molarity:

`Molarity=(42.9 moles)/(45 L)`

Solving:

Molarity= 0.95
`(moles)/(liter)`

The molarity of the solution is 0.95
`(moles)/(liter)`.