# An Erlenmeyer flask containing 20.0 mL of sulfuric acid of an unknown concentration was titrated with

###### Question:

An Erlenmeyer flask containing 20.0 mL of sulfuric acid of an unknown concentration was titrated with exactly 15.0 mL of 0.25 M NaOH solution to the second equivalence point. What was the concentration of sulfuric acid in the flask? H2SO4 (aq) + 2 NaOH (aq) → 2 H2O (l) + Na2SO4 (aq)

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Help me I need an answer please $Help me I need an answer please$...