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A refrigeration system requires 1.5 kW of power for a refrigeration rate of 4 kJ/s. (a). What is the coefficient of performance? (b). How much heat is rejected in the condenser? (c). If heat rejection is at 40 deg. C, what is the lowest temperature the system can possibly maintain?
explain how the ligands of F-, NH3 and CN- bonded to CO3+ can result in a green, yellow-orange, and pale yellow color for these compounds, respectively
Calculate the potential of the following cell and indicate whether the reaction is expected to be spontaneous. Cr + 3 Ag+ ---> Cr3+ + 3Ag
Predict the relative reaction times with ethanolic AgNO3 for the following compounds and rank them from fastest to slowest: 2-chloro-2-butene, 1-chloro-2-butene, 2-chlorobutane.
Some recent media attention about oyster culture and restoration in the Chesapeake Bay and other coastal areas intrigued some environmentally minded citizens in Chincoteague Island,
What type of mineral source (sulfide, oxide, halide, phosphate, silicate, carbonate, etc) are the following elements typically isolated from? Write the chemical formula for the source mineral (for example: silver, typical mineral source = silver s..
Isomeric products isolated from free-radical chlorination, Some isomeric products were isolated from the free-radical chlorination of (R)-sec-butyl chloride.
Calculate in how many years these signs will have to be replaced. Assume that the end lifetime is when the emission from the tritium is down to only 37% from the initial emission when installed
Magnesium Hydroxide is a slightly soluble substance. If the pH of a saturated solution of Mg(OH)2 is 10.49 at 25 degrees celcius, calculate Ksp for Mg(OH)2.
What mass of NaOH (s) must be added to 1.0 L of 0.050 M NH3 to ensure that the percent ionization of NH3 is no greater than 0.0010%? Assume no volume change on addition of NaOH.
what is the length of the unit cell when tantalum (atomic radius = 145 pm) crystallizes in a bcc structure
Write the reaction equation for acid-base equilibrium between hypochlorous acid and hypochlorite ion.
What volume of an organic solvent must be used to effect 90% seperation in one extraction when only 2.7 g of a certain compound dissolves 100 ml of water? (K=15).
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