Consider this system at equilibrium.
a(aq) < ==> b(aq)
delta h= -550 kl/mol
what can be said about q and k immediately after an increase in temperature?

a) q > k because q increased
b) q > k because k decreased
c) q < k because q decreased
d) q < k because k increased
e) q=k because neither changed

how will the system respond to a temperature increase?

1, shift left
2, shift right
3, no change

As part of an industrial process, air as an ideal gas at 10 bar, 400k expands at steady state through a valve to a pressure of 4 bar. the mass flow rate of air is 0.5 kg/s. the air then passes through a heat exchanger where it is cooled to a temperature of 295k with negligible change in pressure. the valve can be modeled as a throttling process, and kinetic and potential energy effects can be neglected. (a) for a control volume enclosing the valve and heat exchanger and enough of the local surroundings that the heat transfer occurs at the ambient temperature of 295 k, determine the rate of entropy production, in kw/k. (b) if the expansion valve were replaced by an adiabatic turbine operating isentropically, what would be the entropy production? compare the results of parts (a) and (b) and discuss.

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?

At what time will the interfering waves have an amplitudeof zero?