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7 December, 07:45

Your outlets at home are rated at 120 V, i. e. the two prongs have on average a potential difference of 120V. If you transfer 2.7 moles of electrons at that voltage, how much energy is released?

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  1. 7 December, 08:58
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    E = 230.4 MJ

    Explanation:

    As 1 mole of electron = 6X 10^23 particles.

    charge of an electron is 1.6 X 10 ^-19 C

    Finding Charge:

    (6X10^23) (2.7) (1.6X10^-19 C)

    i. e. 192 K C

    now to find the energy released from electrons

    V=E/q

    E=V X q

    i. e E = 120 V X 192 K C

    E = 230.4 MJ
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