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student85

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Where U is internal energy, Q is heat transferred from or to the system and W is the work done BY the gas right?

I always mix up U and Q, the concepts. My teacher said U depends entirely on temperature, is this right??

Also, if Q =ncDELTA T, isn't Q also dependent on a change of temperature?

We saw that for an isotermic process, Q = W...WHY??! If it is isotermic, isn't delta T = 0 , so that Q = is 0? Instead my teacher wrote that for an isotermic process, delta U is zero?

Can someone explain this?

Thanks a lot for reading and helping.