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anigeo
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if a gas is expanding,what will be the sign of the work done by it?
Positive, since the gas is doing positive work on the environment. The key word is 'by'. If, instead, you wanted the work done on the gas, it would be negative in the case of expansion.anigeo said:if a gas is expanding,what will be the sign of the work done by it?
anigeo said:if a gas is expanding,what will be the sign of the work done by it?
The sign convention for work of a gas is a system used to determine the direction of energy transfer during a process involving a gas. It is based on the assumption that work done on the gas is positive and work done by the gas is negative.
When work is done on a gas, it is represented with a positive sign in the sign convention. This means that energy is being transferred from an external source to the gas.
A negative sign in the sign convention represents work done by the gas. This means that the gas is transferring energy to its surroundings, resulting in a decrease in its own energy.
The sign convention is important in thermodynamics because it helps us determine the direction of energy transfer and whether a process is positive or negative. This allows us to understand and analyze the changes in energy of a system.
No, the sign convention for work of a gas only applies to processes where the work is done by or on a gas. It does not apply to other forms of energy transfer, such as heat transfer.