What mass of water in grams will give up -1,020 Joules of heat when it's temperature drops from 78^\circ∘C to 51^\circ∘C? [Cp=4.186 J/g*Co]

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

root word, prefixes, and suffixes

answer///terminator or twilight zone;

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