chemistry?

Complete combustion of 2.00 metric ton of coal (assuming pure carbon) to gaseous carbon dioxide releases 6.60 × 1010 J of heat. Convert this energy to the following units. Give your answers in scientific notation.

(a) kilojoules:

(b) kilocalories:

(c) British thermal units:

2 Answers

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  • 4 weeks ago
    Favorite Answer

    To convert from Joules to kiloJoules:

    6.6 x 1010 Joules * (1 kJ / 1000 J) = 6.6 x 107 kJ

    To convert from Joules to kCal:

    6.6 x 1010 Joules * (1 Calorie / 4.184 Joules) * (1 KCal / 1000 Cal) = 1.577 x 107 KCal

    To convert from Joules to BTU:

    6.6 x 1010 Joules * (1 BTU / 1055.06 Joules) = 6.256 x 107 BTU

    Please Rate !! Cool !!!

  • Dr W
    Lv 7
    4 weeks ago

    use dimensional analysis (See the other problem you posted)

    for each question ask

    .. (1) what am I converting from

    .. (2) what am I converting to

    .. (3) what unit factors do we have / need?

    you try it.

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