Question

Question 14

1 pts
How many moles of NaCl could be found in 0.4 L of a 0.9 M solution? Round your answer to
two decimal places.

Answer 1

0.36mol

Step-by-step explanation:

Given parameters:

Volume of NaCl = 0.4L

Molarity = 0.9M

Unknown:

Number of moles = ?

Solution:

To find the number of moles, the molarity of a solution is the amount of solute contained in a solution.

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

Number of moles = molarity x volume

Insert the parameters and solve;

Number of moles = 0.4 x 0.9 = 0.36mol