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Heat Transfer

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Am i right in saying that heat, being energy transferred due to thermal interaction, heating is the process of transferring of this heat energy from one system to another system?

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Solution

Yes.

In thermodynamics, heat is energy transferred fromone system to another as a result of thermal interactions. The amount of heat transferred in any process can be defined as the total amount of transferred energy excluding any macroscopic work that was done and any transfer of part of the object itself.

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Q. The First Law of Thermodynamics states that heat is a form of energy, and thermodynamic processes are therefore subject to the principle of conservation of energy. This means that heat energy cannot be created or destroyed. It can, however, be transferred from one location to another and converted to and from other forms of energy.

The equation for the first law of thermodynamics is given as;

$Δ U = q + W$

Where,

Two moles of an ideal gas expanded isothermally and reversibly from

1 L to 10 L

300 K

. What is the enthalpy change?

Q. The First Law of Thermodynamics states that heat is a form of energy, and thermodynamic processes are therefore subject to the principle of conservation of energy. This means that heat energy cannot be created or destroyed. It can, however, be transferred from one location to another and converted to and from other forms of energy.

The equation for the first law of thermodynamics is given as;

$Δ U = q + W$

Where,

One mole of an ideal gas

C_{v} = \frac{5}{2} R at 300 K and 5 atm

is expanded adiabatically to a final pressure of

2 atm

against a constant pressure of

2 atm

. Find the temperature of the gas?

Q. Heat energy transferred in bodies at thermal equilibrium is

Q. The two important points emerging from the definition of heat are:
a) Heat is the form of energy which is transferred from one object to another due to ______(height difference, temperature difference, mass difference, velocity difference).
b) Heat is an energy that is ______.(in transit, stationary, contained in a body).

Q. When we say heat is transferred from one body to another, in which direction does the heat flow?
State the effects of heat.

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