Consider the combustion of ethylene
Consider the combustion of ethylene, C2H4(g) + 3O2(g) ----> 2CO2(g) + 2H2O(g). If the concentration of C2H4 is decreasing at the rate of 0.025 M/s, what are the rates of changes in the concentration of CO2 and H2O?
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We now raise the temperature of the cylinder very slowly, causing the air to expand raising the piston. What is the temperature just before the piston reaches the top of the cylinder?
LNG (Liquefied Natural Gas) is essentially methane gas cooled to -160 C at which temperature it condenses to the liquid state at a few psia above atmospheric.
A 0.70 kg mass at the end of a spring vibrates 4.0 times per second with an amplitude of 0.15 m. Determine: a) The velocity when it passes the equilibrium point
Water is converted in a boiler from saturated liquid at 500 kPa to superheated steam at 500 kPa and 300*c. Find the change in entropy and the heat transfer required.
In a refrigerator cycle low saturated liquid enters an evaporator and exits as saturated vapor. Draw the T vs. S curve for this cycle and shade the area that represents the cooling delivered by the refrigerator.
How does the presence of impurity B affect the solubility behavior of solute A? Do the solubilities of the two substances add together? Can each of them be treated separately?
If acetic acid is the only acid that vinegar contains Ka = 1.8 x 10^- 5, calculate the concentration of acetic acid in the vinegar. The pH is 3.15.
Find the cooling achieved and the work by the compressor. Is the compressor isentropic? IF the cooling is 300 KJ/kg and the work by the compressor is 300 kJ/kg what is the coefficient of performance for the system?
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