How many milliliters of a stock solution of 5.00 M HNO3 would you have to use to prepare 0.120 L of 0.470 M HNO3?

Question

How many milliliters of a stock solution of 5.00 M HNO3 would you have to use to prepare 0.120 L of 0.470 M HNO3 ?        

Answer 1

(molarity of concentrated solution) X (volume of concentrated solution) = ( molarity of dilute solution) X (volume of dilute solution)

 

(5.00M)(X) = (0.120L)(0.470M)

 

X = (0.120L)(0.470M)/(5.00M)
X=0.01128L or 11.28mL

 

Answer 2

use the following equation for dilution calculations

 

(molarity of concentrated solution) X (volume of concentrated solution) = ( molarity of dilute solution) X (volume of dilute solution)

 

(5.00M)(X) = (0.120L)(0.470M)

 

X = (0.120)(0.470)/(5.00)

0.01128