# A solution (density = 1.08 g/mL) is prepared by dissolving 76.3 grams of NaI in 545 grams of...

## Question:

A solution (density = 1.08 g/mL) is prepared by dissolving 76.3 grams of NaI in 545 grams of water. Determine the following:

a. the mole fraction of NaI
b. the molality of the solution
c. the molarity of the solution

## Concentration of a Solution:

The concentration of a solution tells us how much solute is present in the solution. Different units of concentration include molarity, molality, and moles fraction.

• Mole fraction tells us the moles of solute per mole of solution.
• Molarity is moles of solute per liter of solution.
• Molality is moles of solute per kilogram of solvent.

The number of moles can be determined using the formula below:

$$Moles=\frac{Mass}{Molar\,Mass}$$

Become a Study.com member to unlock this answer!

In this problem, we are given the following:

• Mass of solute, NaI = {eq}76.3\,g{/eq}
• Mass of solvent (water) = {eq}545\,g{/eq}
• Density of solution =...