# Question #8edc0

Dec 20, 2016

The final concentration is $2.0 M$

#### Explanation:

To obtain the final molarity, we can use the equation below:

According to the information provided, we know the following information:

${M}_{1}$ = 10.0 M
${V}_{1}$ = 25 mL
${V}_{2}$ = 125 mL

Since we don't know ${M}_{2}$, the equation has to be rearranged by dividing both sides by ${V}_{2}$ to get ${M}_{2}$ by itself:

${M}_{2} = \frac{{M}_{1} \times {V}_{1}}{V} _ 2$

Now, just plug in the known values and solve for the second concentration:

${M}_{2} = \left(10.0 M \times 25 \cancel{\text{mL")/(125cancel"mL}}\right)$

${M}_{2}$ = 2.0 M