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In absorption refrigeration systems, a two-phase equilibrium mixture of liquid ammonia (NH3) and water (H2O) is frequently used. Consider a liquid-vapor mixture of ammonia and water in equilibrium at 30°C. If the composition of the liquid phase is 60 percent NH3 and 40 percent H2O by mole numbers, determine the composition of the vapor phase of this mixture. Saturation pressure of NH3 at 30°C is 1167.4 kPa.
over the range of cylindrical parts manufactured on a computer-controlled lathe, the standard deviation of the diameters is 0.002 millimeter/ (a) what does Chebyshe's theorem tell us about the probability
Overnight a thin layer of ice forms on the surface of a 40-ft-wide river that is essentially of rectangular cross-sectional shape. Under these conditions, the flow depth is 3 ft. During the following day the sun melts the ice cover.
A 10 feet thick clay that was unsaturated with a unit weight of 108 pcf and a water content of 20% gets saturated and also swells by 20% due to rain. G=2.70.
A w24x192 of a242 steel is to be used as a beam. what are the values of yield stress Fy ultimate tensile stees Fu and modulus of elasticity E for this beam?
Using a steel with Fy = 50ksi, whatuniformaly distributed service load can a simple supported W33 x118 carry for a span of 40 ft when (a) the compression flange isbraced laterally for its full length, and (b) lateral bracing issupplied at the ends on..
A simply supported beam carries with a span of 7.5 m carries a uniformly distributed load of 25 N/mm. if the maximum allowed deflection of the beam is 1/325 of its span, detemine the cross-sectional dimensions of the beam. assume the beam has a recta..
during construction of the surface layer of asphalt pavement, two samples where taken everyday to measure the asphalt content in the mix to ensure that it is within the specification limits. the target value was set at 5.5 percent with a tolerance..
{rm Al} reacts with 4.45 {rm g} of {rm O}_{2}, what is the empirical formula of aluminum oxide?
Assume you are an observer standing at a point on the track for a period of 30 minutes and are recording the instantaneous speed of each vehicle as it crosses your point. What is the time-mean speed and space-mean speed for these vehicle
After the copper mass is added, the final temperature of the mixture is 38 degrees Celsius. By checking the mass, it is determined that 1.2 grams of water evaporated. What was the temperature T
Simplify the shape of the base and the 4 legs and estimate the minimum number of tugs needed to tow the structure at the required speed. The most powerful tugs can produce a thrust of approximately 2000kN,i.e.200tons.
An undisturbed soil sample has a void ratio of 0.56, water content of 15%, and specific gravity of solids of 2.64. Find the wet and dry unit weights in lb/ft^3, porosity, and degree of saturation.
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