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Please convert them

(a) 456 cal to joules

(b) 22.3 j to Calories

(c) 234 kj to Calories

(d) 12.4 Cal to joules

-Calculate the amount of heat required to heat a 3.5-kg gold bar from 21 degrees celcius to 67 degrees celcius.

-If 57 j of heat are added to an aluminum can with a mass of17.1 g, what is its temperature change?

-Calculate the final temperature of 32 ml of ethanol initially at 11 degrees celcius upon absorption of 562 j of heat. (density of ethanol = 0.789 g/ml)

-How much heat in kilojoules is required to heat 56 L of water from 85 degrees F to 212 degrees F?

-A room contains 48 kg of air. How many kilowatt-hours of energy are necessary to heat the air in the house from 7 degrees celcius to 28 degrees celcius? The heat capacity of air is 1.03 j/g degrees celcius.

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Solution Summary

It provides several examples of finding the heat required to raise the temperature.

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Amount of Ice Added to Cool Water

A quantity of ice at 0.0 degrees Celsius was added to 27.8g of water at 21.0 degrees Celsius to give water at 0.0 degrees Celsius. How much ice was added? The heat of fusion of water is 6.01 kJ/mol and the specific heat is 4.18 J/(g*C).

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