For solution A, 50.00 mL of stock solution was diluted to 1000.0 mL.

For solution B, 10.00 mL of solution A was diluted to 250.0 mL.

For solution C, 10.00 mL of solution B was diluted to 500.0 mL.

Calculate the concentrations of the stock solution and solutions A, B, and C.

(Type your answer using the format 8.050e-3 for 8.050 × 10-3.)

Stock solution =_________M Mn2+

Solution A =__________M Mn2+

Solution B =__________M Mn2+

Solution C =__________M Mn2+

#2. A 10.00-mL sample of sulfuric acid from an automobile battery requires 12.05 mL of 2.12 M sodium hydroxide solution for complete neutralization. What is the molarity of the sulfuric acid? Sulfuric acid contains two acidic hydrogens.

_________M