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A shirt is on sale for 30% off. The sale price is $51.50. What was the original price?
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. A 15.0 mL sample of HNO3 of unknown concentration was titrated with 0.109 M NaOH. A volume of 18.6 mL of the base was needed to neutralize the acid sample. What is the molarity of the HNO3 solution?
