Acetylene gas (c2h2) at 25°c, 1 atm enters an insulated reactor operating at steady state and burns completely with 270% theoretical air entering at 25°c, 1 atm. assume air has a molar analysis of 21% o2 and 79% n2. determine the adiabatic flame temperature, in k. the tolerance is ± 20%. (one iteration between the lowest and highest possible adiabatic flame temperature should be enough to get you within this

The sum of the normal stresses does not change as the stress state rotates through an angle. a)-trune b)- false

The proportional limit is always greater than the yield strength for a material. a)-trune b)- false

Liquid flows at steady state at a rate of 2 lb/'s through a pump, which operates to raise the elevation of the liquid 100 ft from control volume inlet to exit. the liquid specific enthalpy at the inlet is 40.09 btu/lb and at the exit is 40.94 btub. the pump requires 3 btu/s of power to operate. if kinetic energy effects are negligible and gravitational acceleration is 32.174 tt/s, the heat transfer rate associated with this steady state process is most closely 1)-2,02 btu/s from the liquid to the surroundings 2)-3.98 btu/s from the surroundings to the liquid. 3)-4.96 btu/s from the surroundings to the liquid. 4)-1.04 btu/s from the liquid to the surroundings.