Usually we do not pay attention to the heat capacity of a styrofoam cup because

Usually we do not pay attention to the heat capacity

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6 in energy of -5.58 kJ. The final temperature of the solution and the cup are 30.0 C. a)Using an argument based on the 1st law of thermodynamics, identify the value of q surroundings.b) Assuming that Δ Esur comes from a multicompnent thermal reservoir consisting of the solution and calorimeter only, determine the calorimeter constant Ccal where qcal = CcalΔTcal. The specific heat of the solution is 4.18 J/gK. Enthalpies of reactions1.Calculate ΔH for this reaction: 2. Calculate ΔH for the following reaction: 8 Al(s) + 3 Fe 3 O 4 (s) → 4 Al 2 O 3 (s) + 9 Fe(s) Δ H Al 2 O 3 =− 1669.8 Δ H Fe 3 O 4 =− 1120.9
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7 3. Assuming the following bond dissociation energies, determine the energy of reaction 4 (H2(g)+ ½ O2(g) H2O(l)). Assume that all bonds are single bonds except for O2(g) which has a double bond).
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