A) What is net transfer of energy by heat? a: It is the sum of all...
A) What is net transfer of energy by heat?
a: It is the sum of all energy transfers by heat into the system.
b: It is the product of all energy transfers by heat into the system.
c: It is the sum of all energy transfers by heat into and out of the system.
d: It is the product of all energy transfers by heat into and out of the system.
B) Under what conditions will the work done by the gas in a system increase?
a: It will increase when a large amount of energy is added to the system, and that energy causes an increase in the gas’s volume, its pressure, or both.
b: It will increase when a large amount of energy is extracted from the system, and that energy causes an increase in the gas’s volume, its pressure, or both.
c: It will increase when a large amount of energy is added to the system, and that energy causes a decrease in the gas’s volume, its pressure, or both.
d: It will increase when a large amount of energy is extracted from the system, and that energy causes a decrease in the gas’s volume, its pressure, or both.
Homework Answers
A) option c is correct as for net transfer we have to add in and out heat where magnitude of out heat will be taken with negative sign and in heat as positive.
B) workdone by gas is positive when either volume increases or pressure increases or both and gas can work when it is provided with energy hence option a is correct
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= (dq/dT)P
and the constant-volume heat capacity is given by
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The value of the heat capacity for a substance depends on
whether it’s measured under constant pressure conditions or
constant volume conditions. The constant-pressure molar heat
capacity is given by
= (dq/dT)P
and the constant-volume heat capacity is given by
= (dq/dT)V
Note that we use d instead of
because q is not a state function of temperature, volume, and
pressure; its value depends on how we execute the process.
Here are several questions regarding heat capacity.
a. When we...
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