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An electrical moter is used to operate a Carnot refrigerator with an interior temperature of 273K. Liquid water at 273K is placed into a refrigerator and transformed to ice at 273K. If the room temperature is 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 the maximum theoretical efficiency.
10.0 mL of a 0.30 M sodium phosphate solution reacts with 20.0 mL of a 0.20 M lead(II) nitrate solution (assume no volume change). What is the concentration of nitrate ions left in solution after the reaction is complete
What is the difference in the chemiacl potential of this gas and an ideal gas at the same pressure and temperature?
Molecular formula of C10H14. The carbon NMR shows 7 carbon peaks and 4 H peaks. H(4) broad multiplet at 7.0, H(3) singlet at 1.4, H(1) multiplet at 1.2, and H(6) doublet at 1.0. Has strong UV absorbance at 260nm
A conversion factor is a(n) used to express a quantity in different units of measurement. Multiplying by a conversion factor is the same as multiplying because the numerator and denominator are equivalent.
According to the VSEPR theory, if there are three electron domains in the valence shell of an atom, they will be arranged in a(n) A. Octahedral Geometry B. Linear Geometry C. Tetrahedral Geometry D. Trigonal Planar Geometry E. Trigonal Bipyramidal..
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 temperatur..
If 1.56g of a gas has a volume of 1.00 L at .984 atm and 50 degrees Celcius, what is the molar mass of the compound
The retina of a human eye can detect light when radiant energy incident on it is at least 4.0 x 10^-17 j. For light of 600 nm wavelength, how many photons does this correspond to
What is the molarity of the carbonate ion in sodium carbonate, Na2CO3, prepared by dissolving 3.5 g of sodium carbonate in enough water to form 0.800 L of solution?
a radioisotope used to evaluate heart function in exercise stress tests, decays by capturing one of its own core electrons. it also emmits gamma rays. write an equation for its nuclear decay, then identify the daughter isotope
If an additional .125 mol of the disulfur decaflouride is added and equilibrium reestablished, what will be the concentrations of each component.
What error will this cause in their determination of the amount of iron in the table?
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