For the reaction, A + B → C, AH = +30 kJ; AS = +50 J/K. Therefore the reaction is:

Consider these reactions, where M represents a generic metal.  1.     2M(s) + 6HCl(aq) yields to 2MCl3(aq) + 3H2(g)    Detal H1=-571.0 kJ 2.     HCl(g) yields to HCl(aq)                                            Delta H2=-74.8 kJ  3.     H2(g) + Cl2(g) yields to 2HCl(g)                            Delta H3=-1845.0 kJ 4.     MCl3(s) yields to MCl3(aq)                                       Delta H4=-370.0 kJ  Use the given information to determine the enthalpy of the reaction  2M(s) + 3Cl2(g) yields to 2MCl3(s) Use the correct number of significant digits.

Explain the following terms:(i) Internal energy of a system(ii) Bomb calorimeter

A 148 g sample of an unknown metal at 74.0 oC is placed in a beaker containing 80.0 g of H2O at 25 oC.  The final temperature of the metal sample and water is 32 oC.  cH2O(l) = 4.184 j/ g oC SHOW ALL WORK (a) What is the specific heat (c) of the metal?   (b) 5 common metals have the following specific heat capacities (c) [given in units of J/g oC] :    Aluminum: 0.921     Copper: 0.377        Gold: 0.126       Iron: 0.461      Nickel:  0.502   Your sample is most likely to be which metal?