Thermodynamics Questions
Explore questions in the Thermodynamics category that you can ask Spark.E!
a cyclic process that transfers energy as heat from a high temperature reservoir to a low temp reservoir with no other change would violate
in a thermally insulated kitchen, an ordinary refrigerator is turned on and its door is left open. the temperature of the room
on a warm day a pool of water transfers energy to the air as heat and freezes. this is a direct violation of
an ideal gas consisting of n moles, undergoes a reversible isothermal process during which the volume changes from Vi vf. the change in entropy of the thermal reservoir in contact with the gas is given by
a certain heat engine draws 500 cal/s from a water bath at 27˚C and transfers 400 cal/s to a reservoir at a lower temp. the efficiency of this engine is
consider all possible isothermal contractions an ideal gas. the change in entropy of the gase
which of the following is not a state variable
one mole of an ideal gas expands reversibly and isothermally at temperature T until its volume is doubled. The change of entropy of this gas for this process is
The key to making sure a process is reversible is to make sure process goes slowly (infinite time) such that system is always in equilibrium and no heat is lost or gained. Not actually possible in real life.Is water freezing reversible or irreversible?
What do all these scenarios share in common?Hot tea cooling down, frozen drink melting, iron rusting, buildings crumbling, balloons deflating, living things dying and decaying
What does the first law of thermodynamics reduce down to for the following processes?1. Isothermal (ΔU = 0), constant temperature no change in internal energy2. Adiabatic (Q = 0), no heat exchange3. Isochoric (W = 0), no change in volume; therefore no work accomplished
If in a reversible process, 5.46*10^4 J heat used to change a 200g block of ice to water at temp of 273K, what is change in entropy of system?
If system is not undergoing phase change, temperature will be proportional to amount of heat transfer. This quantity is known as specific heat (c). Describe the equation for specific heat.
Relate coefficient of linear expansion (α) to coefficient of volumetric expansion (β)
A gas cylinder kept at constant pressure of 3.610^5 Pa while 310^5 J heat added to it, causing gas to expand from 1.0m^3 to 1.5m^3. Find work done by gas and change in internal energy of gas.
if two different types of molecules are in the same enclosed room with constant temperature, what is true about how their average kinetic energies compare
what is the notation for entropy
what happens if pressure decreases in an isometric process
how can you figure out an ideal gas law problem when not all conditions are known
if something has less mass, what is true about the velocity