Equimolar counterdiffusion of nh) and nz at steady state. ammonia gas (a) and nitrogen gas (b) are diltusing in coljnterdiffusion through a straight glass tube 2.0 ft (0.610 m) long with an inside diameter of 0.080 ft (24.4 mm) at 298 k and 101.32 kpa. both ends of the tube are connected to large mixed chambers at 101.32 kpa. the partial pressure ofnh3 in one chamber is constant at 20.0 kpa and 6.666 kpa in the other chamber. the diffusivity at' 298 k and 101.32 kpa is 2.30 x 10- 5 m2 /s. (a) calculate the diffusion ofnh) in ib mol/h and kg mol/s. (b) calculate the diffusion ofn 2' (c) calculate the partial pressures

Consider a resistor with color code “orange blue brown gold” and a measured value of 370 ω. determine the following: nominal value, tolerance, % error, and the probability of another resistor from the same manufacturing batch having a value closer to nominal than this one. use matlab or excel to evaluate the erf function.

Water at room temperature of 20.0°c is poured into an aluminum cylinder which has graduation markings etched on the inside. the reading in the graduations is 300.0 cc. the cylinder with the water in it is then immersed in a constant temperature bath at a temperature of 100°c. what is the reading for the level of water on the graduations of the cylinder after the water and the cylinder reach thermal equilibrium with the bath? the volume coefficient of expansion of water is 2.07 x 10^-4 k-1, and the linear coefficient of expansion of aluminum is 23.0 x 10^-6 k-1. a) 305.0 cc b) 304.0 cc c) 303.5 cc d) 303.3 cc e) 304.5 cc

The record distance in the sport of throwing cowpats is 81.1 m. this record toss was set by steve urner of the united states in 1981. assuming the initial launch angle was 45° and neglecting air resistance, answer the following. (a) determine the initial speed of the projectile. m/s