Question

How much of a concentrated 7.3 M NaCl solution would I need to dilute with water to make 50.0 mL of a new NaCl solution with 2.3 M concentration?

Answer 1

15.7 mL

Step-by-step explanation:

For this problem, you will have to use the equation
`M_(1) V_(1) =M_(2) V_(2)`.

Plug in the values you were given and solve for
`V_(1)`.

`(7.3 M)(V_(1) )=(2.3M)(0.05L)\\V_(1) =0.0157 L`

You can convert liters to milliliters and get 15.7 mL.