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1)What is the final concentration when 420 mL of a 12.0 mol/L sodium hydroxide solution is diluted to 2.0 L? Show your work and explain

1)What is the final concentration when 420 mL of a 12.0 mol/L sodium hydroxide solution is diluted to 2.0 L? Show your work and explain each step.

2)10.0 mL of 0.500M calcium hydroxide, Ca(OH)2 is required to titrate 50.0 mL hydrochloric acid, HCI(aq), to the endpoint. What is the initial concentration of the acid? Show your work and explain each step.

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