The steady-state heat flux through the (1.9 mathrm{~cm}) argon gap in an insulated window is to be

Question:

The steady-state heat flux through the $1.9 \mathrm{~cm}$ argon gap in an insulated window is to be measured. Assuming pure conduction through the gas and windowpane temperatures of $20^{\circ} \mathrm{C}$ and $-10^{\circ} \mathrm{C}$, what is the heat flux if:

a. The thermal conductivity is given by kinetic theory?

b. The thermal conductivity is given by the Chapman-Enskog theory?

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