Two infinitely large black plane surfaces are 0.3 m apart and the space between them is filled by an isothermal gas mixture at 811 K and atmospheric pressure consisting of 25% CO2, 25% H2O, and 50% N2 by volume. If one of the surfaces is maintained at 278 K and the other at 1390 K respectively, calculate(a) The effective emissivity of the gas at its temperature(b) The effective absorptivity of the gas to radiation from the 1390 K surface(c) The effective absorptivity of the gas to radiation from the 278 K surface(d) The net rate of heat transfer to the gas per square meter of surface areaGIVENTwo infinitely large black plane surfaces with an isothermal gas mixture between themDistance between surfaces (s) = 0.3 mGas mixture temperature (Tm) = 811 KGas mixture pressure = 1 atmGas contents: 25% CO2, 25%H2O, 50 % N2 by volumeSurface temperaturesT1 = 278 KT2 = 1390 KASSUMPTIONSSteady stateConvection isnegligible

A: T= 78 K Gas: Tm:811 K s=0.3 m A2: T2 = 1390 K