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1. Determine the irreversibility rate produced by an adiabatic compressor that compresses 0.150 kg/s of refrigerant R-134a from 0.00°C at 0.100 MPa to 80.0°C at 0.500 MPa. The local environmental temperature is 20.0°C.
2. Refrigerant R-22 flows through a condenser at a rate of 2.70 kg/s. It enters the condenser as a superheated vapor at 1.00 MPa and 50.0°C and exits as a saturated liquid at 25.0°C. The average temperature of the condenser is 30°C and the local environmental temperature is 20.0°C. Determine the irreversibility rate for this condenser.
How would you prepare a liter of "carbonate buffer" at a pH of 10.10. You are provided with carbonic acid (H2CO3), sodium hydrogen carbonate (NaHCO3), and sodium carbonate (Na2CO3). Ka value of H2CO3= 4.2x10^-7
Aceticle acid is a weak acid with pk=4,75.what is the pH of a solution prepared by adding 0,1 mol of acetic acid and 0,03 mol of NaOH to water at a final volume of 1liter. use henderson-hasselbach equation for calculations.
Problem- An FM radio station has a frequency of 88.9 MHz (1MHz = 10*6 Hz). Determine the wavelength (in nm).
The value of Kc for the equilibrium: N2O4(g) → 2NO2(g) is 4.0x107. If the initial concentration of N2O4 is 0.75 M, Explain what are the equilibrium concentrations of all substances
With aqueous H2CrO4, compound A was oxidized to an optically inactive dicarboxylic acid C, C6H10O4. Give structures for compounds A, B, and C; do not specify stereochemistry
What is the vapor pressure of a solution that contains .944 moles Ba(NO3)2 and 30 moles of H2O? The vapor pressure of pure water at the same temperature as the solution is 46 torr
When 15.6 mL of 0.500 M AgNO3 is added to 12.5 mL of 0.300 M NH4Cl, how many grams of AgCl are formed
for a first-order reaction. at 750 k 15 of a sample of cyclopropane changes to propene in 6.8 minutes. what is the
determine the theatrical yield if 1.56 grams of hydrogen is permitted to combines with 9.70 grams of nitrogen producing
What was the recipe you selected for your final treatment? Describe the reasoning behind your selections of time and temperature. What effects did you observe on the relationship between taste, texture, and temperature?
In a flame test experiment, sodium gives the brightest and most persistent color in the flame. Do you think that potassium could be detected visually in the presence of sodium
The standard free energy for the neutralization of HCl with NaOH at 25 degrees Celsius is -79.9KJ/mol. Calculate the equilibrium constant for the reaction.
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