Calcule la presión ejercida por 5 moles de CH3OH gaseoso que ocupa el volumen de V = 0,6187 litros, a una temperatura de 500K usando la ecuación universal de los gases y la ecuación de Van der Waals y comparar los resultados. Determinar el % de error entre ambos valores. Estos valores de presión y temperatura se encuentran por debajo de la temperatura crítica del metanol (Tc = 512,5 K, Pc = 80,8 atm) y las constantes experimentales de la ecuación de Van der Waals para el metanol son: a = 9,23×106 cm6 atm mol-2 b = 65,1 cm3 mol-1

Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation

An external consultant recommends that a plant installs a bank of capacitors for power factor correction. this will reduce the peak electrical demand charges by an average of 93 kw every month. the plant current pays $13 per kw in peak demand charges. the capacitor bank will include 223 kw of fixed capacitors, and 183 of variable capacitors. the fixed capacitors cost $59 per kw, and the variable capacitors will cost $65 per kw. the consultant charges 21% of the equipment costs to install the capacitors. because this project will reduce the demand for the electric utility, they are prepared to provide a one-time rebate of $42 per kw of reduced demand. what is the simple payback period for this project (in years)?

Acarnot refrigerator operates in a room in which the temperature is 21°c and of power when operating. if the food compartment of the refrigerator is consumes 3 kw to be maintained at 2°c, determine (a) the coefficient of performance of the cycle and (b) the rate of heat removal from the food compartment. refrigerator cycle that has a higher coefficient of performance than that of the discussed (e) is it possible to develop a carn ot refrigerator, operating between the same temperature limits? explain