Question

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What is the change of entropy for a heat engine using 500.0 J at 20.0°C?

Answer 1

heat = change in entropyX temperature(in kelvin)
apply in this

Answer 2

Change in entropy can be defined by the following equation:\[\Delta S=\frac{ \Delta Q }{ T }\]where ∆S is the change in entropy; ∆Q is the energy spent or input; and T is the temperature. Note that the units of entropy are J/K, so that means that the units of heat, Q, are Joules, and the units of temperature, T, are Kelvin.