Question

A 10.0 mL sample of 1.18 M AgNO3 is diluted to a final volume of 250.00 mL. Whats the final concentration?

2.12x 103 M
0.0339 M
29.5 M
0.0472 M

Answer 1

Final concentration M2 = 0.0472 M

Step-by-step explanation:

Given:

Initial volume V1 = 10 ml

Initial concentration M1 = 1.18 M

Final volume V2 = 250 ml

Find:

Final concentration M2

Computation:

Using conservation of volume;

(Initial volume)(Initial concentration) = (Final volume)(Final concentration)

M1V1 = M2V2

(1.18)(10) = (Final concentration M2)(250)

(1.18)(10) / 250 = (Final concentration M2)

Final concentration M2 = 11.8 / 250

Final concentration M2 = 0.0472 M