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The states in a reversed Brayton cycle air conditioner using air (a constant specific heat ideal gas) as the working fluid are as follows:
Determine the actual coefficient of performance of this cycle if the compressor and expander isentropic efficiencies are 0.790 and 0.880, respectively. Note: Not an ASC analysis.
A student completes a titration of an unknown diprotic acid. In this experiment, 0.79 g of the acid is dissolved in 250.0 mL of water. It requires 13.48 mL of 1.0 M NaOH to reach the second equivalence point. What is the molar mass of the acid
Question- The reaction for the formation of gaseous hydrogen fluoride has an equilibrium constant of 1.15 e2 at a certain temperature. H 2 (g) + F 2 (g) 2 HF (g) At this temperature, 2.500 mol of each component were added to a 1.500 L flask. Cal..
Use this equation to calculate the wavelength of the photon emitted in units of nanometers for the following transitions.
A 2.50L volume of a monatomic ideal gas at 283K is contained by a piston at a constant pressure of 1.00 bar.The piston is lifted by reversible, isothermal, and isobaric addition of 1.45 mo lof the same gas through a port in the container.R= 8.314 JK-..
the pressure of the vapor in this experment when the flask was full of vapor was assumed to be equal to the pressure of the atmosphere in the laboratory. why is this assumption valid
write a complete ionic equation and if there is a phase change you need to then write a net ionic equation and list the spectator ions copper (ii) sulfate plus silver nitrate equals copper (ii) nitrate and silver sulfate
A gas sample in a piston container has a volume of 2.0 liters at 1.0 atm and 27 oC. The temperature is changed such that the volume is decreased to 1.2 liters and the pressure is increased to 5.0 atm. What Kelvin temperature is needed to produce t..
How were atomic masses for the elements determined?
If 8.6 L of NO is combined with excess O2 at STP, what is the volume in liters of the NO2 produced?
A gas mixture contains helium and oxygen at respective partial pressures of 255 torr and 0.450 atm. What is the total pressure in mm Hg of the mixture?
-Determining the molar enthalpy/heat of a reaction, and then how much heat was actually given off in a specific reaction -Finding the increase in temperature of a substance given its gain or loss of heat energy
A 119.6ml sample of 0.110M methylamine (CH3NH2) is titrated with 0.255 M HNO3 . Calculate the pH after the addition of each of the following volumes of acid.
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