Review
Drill: Thermodynamics
What unit measures specific heat?
What unit is used to measure latent heat?
What is meant by the term latent heat?
What is the difference between a vapor and a gas?
What is the equation for the First Law of Thermodynamics?
Which type of flame is hotter: blue, red, or green?
Name three types of heat transfer mechanisms.
What equation determine the heat rate (J/sec) of heat being conducted through a conductor?
When a hot object radiates heat to its surroundings, which is more important to maximize for the greatest heat current (J/sec): its surface area or the temperature differential between it and the ambient temperature of its surroundings?
True or False. When determining the heat current (J/sec) during convection, Newton's Law of Cooling states
where
is the heat transfer coefficient, A is the surface area, and T is the temperature of the hot temperature.
What is the significance of the slopes of lines on a phase diagram?
State the Ideal Gas Law
When calculating changes to a confined gas, the Combined Gas Law is often used. State the Combined Gas Law.
What is Avogadro's Number?
If you know the amount of mass present in a gas sample, how do you calculate how many moles of gas are present?
How do you calculate the average translational kinetic energy of a gas molecule if you know the temperature of the gas sample?
How do you calculate the pressure on the walls of the container if you know the container's volume, the amount of gas present, and the temperature of the gas? Recall that pressure results from the impulse delivered by the collisions of the gas molecules with the area of the container's walls.
What are the five state variables when referencing a PV diagram?
True or False. In a complete heat cycle, the final change in the internal energy of the confined gas equals 0.
Which commonly used gases are monatomic and which are diatomic?
True or false. On a PV diagram, the work done
by the gas during an expansion
is positive.
During which gas process is NO work done on or by the gas?
What is the formula used to calculate the heat added or removed during an isovolumetric (isochoric) process?
What formula is used to calculate the amount of heat added during an isobaric expansion or removed during an isobaric compression?
What quantity in the First Law equals zero during an adiabatic process?
What is the equation for the efficiency of a heat engine?
What is the equation for the Carnot efficiency of a heat engine?
When, theoretically, could a heat engine be 100% efficient?
What is the Zeroth Law of Thermodynamics?
What is the Second Law of Thermodynamics?
During which gas process is there no change in the internal energy of the gas?
On a PV diagram, as positions on the graph move away from the axes towards the interior of the graph, do the temperatures increase or decrease?
During a gas cycle, when is
positive?
On a PV diagram, if a gas cycle moves "clockwise" will the
net work
be positive or negative?
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