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