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chemistry

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how many joules of nutritional energy are in a bag of chips whose label reads 245 Cal? if 1 lb of fat is stored by the body for each 14.6X10(3) KJ of excess nutritional emergency consumed.how many bags of chips contain enough nutritional energy to result in 1lb of body fat?

  • chemistry -

    245 Cal = 245 kcal = 245,000 calories
    1 calorie = 4.184 J; therefore,
    245,000 cal x (4.184 J/cal) = ? J.
    ?J x (1 kJ/1000) x (1 lb/14.6E3) = ?

  • chemistry -

    0.0699 rounded to 3 sig figs.

  • chemistry -

    245Cal x 4182J=1.03x10(6)J
    (14.6x10(3)kJ x 1000J)/1.03x10(6)J=14.2
    Rounded to 3 sig figs

  • chemistry -

    all of these wrong.

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