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How much heat (kcal)is needed

How much energy is needed to heat and melt 3.0 kg of copper initially at 83°C?Be mindful of significant figure rules for both
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2. asked by casey
3. 1,714 views
How much heat must be removed from a 200 g block of copper to lower its temperature from 302 oF to 68oF? Specific heat of
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2. asked by John
3. 869 views
The specific heat (heat capacity) of toretel is found to be 4.9 (cal/g * °C). What is the amount of energy transferred in in
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2. asked by Tayo
3. 199 views
How much heat is contained in 100 kg of water at 60.0 °C?Be mindful of significant figure rules for both multiplication and
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2. asked by casey
3. 1,831 views
How many calories must be supplied to 59 gof ice at −6 C to melt it and raise the temperature of the water to 61 C? The
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2. asked by anonymous
3. 2,179 views
A heat engine absorbs 126 kcal of heat and exhausts 77 kcal of heat in each cycle. Calculate the efficiency (as a percentage)
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2. asked by Riley
3. 552 views
A heat engine absorbs 126 kcal of heat and exhausts 77 kcal of heat in each cycle. Calculate the efficiency (as a percentage)
1. 4 answers
2. asked by Chelsea
3. 577 views
A heat engine absorbs 126 kcal of heat and exhausts 77 kcal of heat in each cycle. Calculate the efficiency (as a percentage)
1. 0 answers
2. asked by Chelsea
3. 553 views
Using the ten percent rule, determine how many kilocalories of energy the tertiary consumer tuna will receive.Algae Shrimp
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2. asked by Somethingishere
3. 196 views
Using the ten percent rule, determine how many kilocalories of energy the tertiary consumer tuna will receive.Algae Shrimp
1. 1 answer
2. 82 views