Heat and Work Change in energy: Calculate the energy change, Delta E, when q = -

Question

Heat and Work Change in energy: Calculate the energy change, Delta E, when q = -47 kJ and w = +88 kJ. Calculate the energy change, Delta E, when the system releases 125 kJ of heat while 104 KJ oi work is done on the system. Specific Heat How much heat (in J) is required to warm 3.00 L of water from 25.0 degree C to 100.0 degree C? (The density of water is 1.00 g/mL. The specific heat of water is 4.18 J g-1 degree C-1.) Kryptonite is a green, radioactive mineral expelled from the dying planet of Krypton (which turns up with alarming frequency on the planet Earth). If 250.0 kJ of heat energy is added to a 225 g sample of kryptonite initially at 14.5degree C, what is the final temperature of the sample? (The specific heat of kryptonite is 2.55 J g-1 degree C-1.)

Explanation / Answer

Heat and Work Change in energy: Calculate the energy change, Delta E, when q = -

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