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On a particular day, the following appliances are used for the times indicated: coffee maker, 40 min, and microwave oven, 12 min. Using the power requirements given in Table 4.4, find how much it costs to use the appliances at an electrical cost of 8¢ per kWh.
Use this value to calculate the mass of ice required to cool 355 mL of a beverage from the room temperature (25 degree celsius) to 0 degree celsius. Assume that the specfic heat capacity and the density of the beverage are the same as those of wat..
what is the weight of O in 742.0 g of citronella oil that has the chemical formula C10H18O
compound A (C10H18O2) is optically pure with an absolute configuration "S" at the stereocentre. The IR spectrum of A has no strong bands at 3400cm-1, a weak band at 3050cm-1, several strong bands from 2850 to 2950cm-1, a strong band at 1740cm-1 an..
when sodium bicarbonate nahco3s is heated sodium carbonate is produced with the evolution of water vapor and carbon
The half-life of U-235, an alpha emitter, is 7.1*10^8 yr.Calculate the number of alpha particles emitted by 9.1 mg of this nuclide in 8.0 minutes.
Presume the structure of compound Z C11H12O4 which has UV-Vis absorptions above 275 nm. Its IR spectrum depicts bands at 3208, 3175, 3100, 2947
An automobile tire has a pressure of 255 kPa gauge in the summer when the tire temp after driving is 50C. Explain what is the winter time pressure of the tire at 0C if the volume of the tire is considered the same and there are no leaks
Calculate the molar solubility of strontium chromate in water at 298 K if Ksp = 3.6 * 10-5.
A certain elementX forms a compound with oxygen in which there are two atoms ofX for every three atoms of O. In this compound, 1.125 g ofX are combined with 1.000 g of oxygen. Use the average atomic mass of oxygen to calculate the average atomic m..
Starting out on a road trip you inflate your tires on your car to the recommended pressure of 46.5 psi on a day when the temperature is -5.0 C. Upon arrival at your destination, the temperature is now 28.0 C/ The volume of the tires has increased ..
Give the formula of a product (derived from the first-named substance) that may be formed in the following reactions. (Note, in the example that any lower oxidation state compound is possible: but not any higher one. Some are more probable than ot..
The following data was recorded. Solution: Relative Fluorescence A (standard oxidized) 62.4 B (standard, blank) 7.0 C (sample, oxidized) 52.0 D( sample, blank) 8.0 Calculate the vitamin B1 content of the pork in terms of micrograms per gram.
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