A student is performing a titration experiment to determine the concentration of a Nitric Acid (HNO3). The student prepares a 10.0 mL sample of HNO3 with phenolphthalein and prepares to titrate with 2.71 M Potassium Hydroxide (KOH) The initial volume of the buret reads 6.35 mL. KOH is added to the sample until a faint pink color is present; the final volume of the buret reads 15.10 mL. Calculate the concentration of the HNO3 in this sample

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