The last two pictures are the equations for the questions I need help with. I li

Question

The last two pictures are the equations for the questions I need help with. I listed these out because I already posted this and someone left all the answers out except for two, please read everything and show me how to find the solutions. For Part A I need help finding;
qH20
Specific heat of the metal(eq. 3)
Approximate molar mass of metal
For Part B:
qH20 for the reaction(eq 1)
(Delta) H for the reaction (eq 5)
(Delta) H solution
Name Section Experiment 14 Data and Calculations: Heat Effects and Calorimetry A. Specific Heat Trial 1 47.79- 31.27 Mass of stoppered test tube plus metal T0 Mass of test tube and stopper IS O 113.&3 63.8 1.52 Mass of calorimeter Mass of calorimeter and water Mass of water Mass of metal Initial temperature of water in calorimeter Initial temperature of metal (assume 100 C unless directed to do otherwise 100C Equilibrium temperature of metal and water in calorimeter 268 ? oC oC 3.4 C oc oc 3.2 c oC 7793, Specific heat of the metal (Eq. 3) Unknown metal # B. Heat of Solution Mass of calorimeter plus water 121,2t Mass of beaker (continued on following page)

Explanation / Answer

Part A :
qH2O = 68.81 gm * 4.18 J/gm oC * 3.4oC = 977.9277 J
Part B :
qH2O = = 76.2 gm * 4.18 J/gm oC * (17.6 - 24.2) oC = -2102.2056 J
?Hreaction = -qH2O = 2102.2056 J
?Hsolution  = [Ccal in J/gm oC * (17.6-24.2)oC] / [76.2 + 8.92] gm = --------- J/gm
Ccal is not given here, so subtitute that value and find out

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