Chemical Forums
Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: dirknathan on October 11, 2012, 03:47:03 PM
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When 1.0 gram of candy bar was placed in a bomb calorimeter and ignited, the temperature rose from 23.8 °C to 42.9 °C. If the heat capacity of the calorimeter is 1023 J/°C (which includes the contribution from the water jacket).
a)Calculate the energy released per gram of candy bar in terms of kJ.
b) If each Halloween snack-sized candy bar is 15 g, how many Calories are consumed once you polish off a handful (6 candy bars) of Trick-or-Treating loot? (1 Calorie = 1 kcal)
Now, I have no idea how to even approach this. All my notes include the mass of water in the calorimeter.
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Heat capacity of water (mc) is already included in the heat capacity of the calorimeter.
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ΔH = mcΔT?
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ΔH = mcΔT?
Yes, just instead of mc you use one value of a total heat capacity of calorimeter.
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When 1.0 gram of candy bar was placed in a bomb calorimeter and ignited
How'd one ignite a candy bar? ???
Especially without altering the heat of reaction a lot and at 28 C..
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Idk buddy! Haha. Could someone please how me the process of filling in the formula? I'm not trying to get I freebie. I need to understand it. The process of filling the formula with the proper units will be great! I can do the calculations, obviously.
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First try by yourself, you will learn more this way. And don't be afraid of being wrong - the only people that never do any mistakes are those that never do anything.
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I already have. I got the wrong answer.
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Then show what you did and we will start from there.