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An electrical motor is used to operate a Carnot refrigerator with an interior temperature of 0 degrees Celsius. Liquid water at 0 degrees Celsius is placed into the refrigerator and transformed to ice at 0 degrees Celsius. If the room temperature is at 300 K, what mass of ice can be produced in 1 hour by a 0.35-hp motor that is running continuously? Assume that the refrigerator is perfectly insulated and operates at maximum theoretical efficiency.
how does nuclear magnetic resonance imaging allow us to see inside human bodies? in what other ways do you think this
What is the structure of the product formed in the following reaction of an epoxide with ethoxide ion? If more than one stereochemical product is possible
If there's a mixture of O2 and N2, and the mol of N2 is 0.605 mol, and fraction (f) of O2 is 0.251; then, what is the mol of O2?
What are some of the characteristics that we want to observe? What might be your initial hypothesis? How would you set up an experiment to test your hypothesis?
1 what is the molar mass of a substance that is 22.3 n bymass and one molecule contains 2 nitrogen atoms?2 what is the
at 450degc ammonia gas decomposes into hydrogen and nitrogen gases. an experiment starts by placing 2.25 moles of
Why is it not possible for the molar mass of a monoprotic acid to have a value less than 1g/mol
How many gallons of E25 could be made by dilution. About how many cars does this fill at 13.0 gallons per car
Which of the following equilibria would NOT be affected by pressure changes atconstant tempature. a.) CO(g) + 1/2O2(g) CO2(g) b.)CaCO3(s) CaO(s) + CO2(g)
The normal range for the carbonyl group of a carboxylic acid in the IR spectrum is 1725 - 1700 cm-1. Why is the carbonyl group of benzoic acid appear at 1696 cm-1
What are the roots for x in this quadratic equation? 2 x2 - 7 x + 0.5 = 0 The larger root is (use 3 significant figs) The smaller root is (use 3 significant figs)
Consider the titration of 100.0 mL of 0.100 M H2NNH2 (Kb = 3.0 10-6) by 0.200 M HNO3. Calculate the pH of the resulting solution after 100.0 mL of HNO3 have been added.
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