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    In the presence of excess oxygen, methane gas burns

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    1. In the presence of excess oxygen, methane gas burns in a constant-pressure system to yield carbon dioxide and water:

    Calculate the value of q (kJ) in this exothermic reaction when 1.70 g of methane is combusted at constant pressure.
    A. -94.6
    B. 0.0306
    C. -0.0106
    D. 32.7
    E. -9.46 × 104

    2. Calculate the kinetic energy in joules of an automobile weighing 2135 lb and traveling at 55 mph.

    A. 1.2 × 104
    B. 2.9 × 105
    C. 5.9 × 105
    D. 3.2 × 106
    E. 3.2 × 10-6

    3. The heat absorbed by a system at constant pressure is equal to E + PV.

    4. Calculate H0 at 25C for the reaction below.
    2ZnS(s) + 3O2(g)  2ZnO(s) + 2SO2(g)
    H (kJ/mol) -205.6 0 -348.3 -296.8

    A. -257.1 kJ
    B. -879.0 kJ
    C. +257.1 kJ
    D. -582.2 kJ
    E. +879.0 kJ

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    https://brainmass.com/chemistry/physical-chemistry/in-the-presence-of-excess-oxygen-methane-gas-burns-101234

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    1. In the presence of excess oxygen, methane gas burns in a constant-pressure system to yield carbon dioxide and water:

    Calculate the value of q (kJ) in this exothermic reaction when 1.70 g of methane is combusted at constant pressure. A is the correct answer
    ...

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