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The standard molar enthalpy of combustion of ethane (C2H6(g)) is –1559.7 kJ∙mol–1.  Which energy diagram corresponds to this process?  Data sheet and Periodic Table

Between HI and HF, which has the higher boiling point and why?  Data sheet and Periodic Table

Which combination will result is a precipitate forming?  Data sheet and Periodic Table

Which sample has the largest volume?              The density of aluminum is 2.7 g∙cm–3, and the density of copper is 9.0 g∙cm–3.   Data sheet and Periodic Table

Which acid is named correctly?  Data sheet and Periodic Table

A molecular compound is found to consist of 30.4% nitrogen and 69.6% oxygen. If the molecule contains 2 atoms of nitrogen, what is the molar mass of the molecule?  Data sheet and Periodic Table

What is the standard molar heat of solution for solid calcium bromide (CaBr2) given the standard enthalpy of formation data below?ΔHof of CaBr2(s) is –682.8 kJ∙mol–1ΔHof of Ca2+(aq) is –542.83 kJ∙mol–1ΔHofof Br–(aq) is –121.55 kJ∙mol–1   Data sheet and Periodic Table

It takes 38.65 mL of a 0.0895 M hydrochloric acid solution to reach the equivalence point in the reaction with 25.00 mL of barium hydroxide.                                                2HCl(aq) + Ba(OH)2(aq)2H2O(l) + BaCl2(aq)What is the molar concentration of the barium hydroxide solution?   Data sheet and Periodic Table

Which line corresponds to a process that requires an input of energy?           Data sheet and Periodic Table

What particles would be present in NH3(aq)?  Data sheet and Periodic Table