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4.3 g of Sample D (molar mass = 82.5 g/mol) is combusted in a coffee cup calorimeter. 120 mL of H2O at 23.4°C increases to 28.9°C. What is the enthalpy change for the reaction of D in J/g?
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A solution is made by mixing 30.0ml of 0.240M NH3(aq) with 30.0ml of 0.240 M hydrochloric acid. What is (Are) the principal species and their molarities in the resulting solution? What is the PH of the solution?
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