Thermodynamic energy problems (tutorial J ) are presented in a
variety of ways designed to illustrate: the definitions of
thermal energy changes, the transfer of thermal energy, how the
energy of a reaction is measured and how the energy of a
reaction can be calculated using thermodynamic data. The
problems given here are meant to be only a representative
sample. ·A mixture of propane and oxygen are burned in a
cylinder equipped with a piston. The system loses 1200 J of heat
to its surroundings and does 500 J of work in moving the piston.
What is the change of the internal energy of the system? J ·The
specific heat capacity of water is 4.184 J/gK. If you take 1
liter of water from a refrigerator at 4oC and let it warm to
room temperature (24oC), how much heat is transferred to the
water from its surroundings? J ·If a 100 g block of aluminum at
100oC is dropped into 1000 mL of water at 20oC, what would be
the final temperature of the water? The specific heat capacity
of aluminum is 0.908 J/gK. J ·Calculate the