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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.
Identify the longest, shortest, strongest and weakest bond out of the following: a triple bond, double bond, a single bond carbon attached to methyl groupCH3- CH2- CH- CH3 | CH3 and a single bond between a doubly bonded carbon attached to methyl g..
Standard potentials measured against the standard hydrogen electrode, Standard potentials are measured against the standard hydrogen electrode (S.H.E.). Because it is not always convenient to use a S.H.E
The equation for the energy of the electron in the hydrogen atom is given in your text(s) as E= - 2.18 x 10^-18J x (1/n_f^2 - 1/n_i^2). However the actual equation
A mixture of 70 mole% propane and 30 mole% hydrogen is burned with 30% excess air.
a 5.08-g chunk of potassium is dropped into 1.06 kg water at 24.0degc. what is the final temperature of the water after
50.0 ml of 0.987 M HCl was mixed with 50.0 ml of 1.02 M NaOH, the heat of neutralization was calculated to be -2.7 kJ. What is the enthalpy (molar heat) of neutralization?
At 1.00 bar and 0 °C, a 5.04 L mixture of methane (CH4) and propane (C3H8) was burned, producing 16.5 g of CO2. What was the mole fraction of each gas in the mixture? Assume complete combustion.
Aluminum oxide is an ionic compound found in soils. What ions are formed by aluminum atoms and by oxygen atoms? What is the chemical formula for aluminum oxide?
Calculate the molarity of urea in a soln prepared by dissolving 16 g of urea (MM= 60.0 g/mol) in 39 g of H20. The density of the soln is 1.3 g/ml.
Which of the following below applies to the addition of nucleophiles toalpha, beta-unsaturated carbonyl compounds
For your unknown titration, indicate whether the pH at the equivalence point should be equal to 7.0, greater than 7.0, or less than 7.0. Explain your choice, including the appropriate balanced net ionic equation.
Give all of the possible alkenes formed in the dehyration of the following alcohols: a) 1-methylcyclohexanol b) 2-methylcyclohexanol c) 1-hydroxymethylcyclopentane d) 3,3-dimethyl-1-butanol
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