1. Round Jet Diffusion Flame An ethaneitrogen mixture (50\% ethane by volume) at 1 atm and room temperature exits a round tube of 5mm radius into a quiescent air environment. The fuel/ N2mixture exits the tube with a uniform velocity of 2m/s. Determine: a) the stoichiometric mixture fraction for this setup; b) an estimate of the downstream location where the flame has its maximum width (hint: at max width, drflame/dx=0 ); and c) an estimate the ratio of the length of the flame produced by this setup to the length of a flame that would be produced by a pure ethane fuel exiting the same tube with the same uniform exit velocity. For this problem, you may neglect the effect of density change in the flow