A patient says to the nurse, “My father has been dead for over 10 years, but talking to you is almost as comforting as the talks he and I had when I was a child.” Which term applies to the patient’s comment?

What volume of 0.200 M K2C2O4 is required to react completely with 30.0 mL of 0.100 M Fe(NO3)3?                            2Fe(NO3)3 + 3K2C2O4Fe2(C2O4)3 + 6KNO3   Data sheet and Periodic Table

What is the total volume of gases produced when 3.0 L of nitrogen trichloride (NCl3) decomposes into chlorine and nitrogen at a constant pressure and temperature?                2NCl3(g)N2(g) + 3Cl2(g)  Data sheet and Periodic Table

What are the spectator ions when K2S(aq) and CaCl2(aq) are combined?  Data sheet and Periodic Table

What is the standard molar enthalpy of formation for aluminum oxide (Al2O3) based on the thermochemical equations provided?4Fe(s) + 3O2(g) 2Fe2O3(s)                         ΔH°1 = –1648.4 kJ·mol–12Al(s) + Fe2O3(s)2Fe(s) + Al2O3(s)         ΔH°2 = –851.5 kJ·mol–1   Data sheet and Periodic Table

What is the total volume of gases produced when 3.0 L of nitrogen trichloride (NCl3) decomposes into chlorine and nitrogen at a constant pressure and temperature?                2NCl3(g)N2(g) + 3Cl2(g)  Data sheet and Periodic Table

What mass (in g) of iron (Fe, molar mass = 55.85 g∙mol–1) is needed to experimentally produce 50.0 g of iron(III) oxide (Fe2O3, molar mass = 159.70 g∙mol–1) in excess oxygen if the percent yield is 78.7%?                               4Fe(s) + 3O2(g)2Fe2O3(s)   Data sheet and Periodic Table

What isotope is depicted in the figure?                                      Data sheet and Periodic Table

Which pure molecular substance will have the lowest vapor pressure at 25 oC?  Data sheet and Periodic Table

What element is oxidized and what is the oxidizing agent in the reaction below?                Fe2O3(s) + 3CO(g)2Fe(s) + 3CO2(g)  Data sheet and Periodic Table