You want to dilute 10M sulfuric acid to make 500mL of 1M sulfuric acid. How much 10M sulfuric acid should you measure?

To calculate the amount of 10M sulfuric acid you need to measure, you can use the formula:

C1V1 = C2V2

Where:
C1 = initial concentration of the solution (10M)
V1 = initial volume of the solution (unknown)
C2 = final concentration of the solution (1M)
V2 = final volume of the solution (500mL)

Substituting the given values into the formula, we get:

(10M)V1 = (1M)(500mL)

Rearranging the equation to solve for V1, we have:

V1 = (1M)(500mL) / 10M

Simplifying this expression, we find:

V1 = 50mL

Therefore, you would need to measure 50mL of 10M sulfuric acid to dilute and make 500mL of 1M sulfuric acid.