Question

2. A student prepares a solution with a concentration of 10 M

and a volume of 34. 5 mL. The student then increases the
volume by adding 55 mL. What is the final concentration of
this solution?

Answer 1

Answer:

6.272727273 (.27 repeating)

Step-by-step explanation:

First we plug the values into our Molarity and Volume relation equation.

Molarity1 x Volume1 = Molarity2 x Volume2

(10)(34.5) = (x)(55)

Now we rearrange the equation as though it were an algebra equation to get x (M2) by itself.

(10)(34.5)/55 = x

Now solve.