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Which process is accompanied by an increase in entropy?
restocking a canned goods shelf display in a supermarket
setting up a stack of dominos
filing correspondence in file folders and placing them in hanging file folders
setting up decorations on a Christmas tree
dropping a glass pane on the front walk of your residence
Using a sample of CO 2 occupies a 2.54dm^3 container at STP. Determine the volume of the gas at a pressure of a temperature of 26.0 degree Celsius and 150.0 kPa?
what is the vapor pressure of ethanol at 290 K when heat of vaporization is equal to 38.56 kJ/mol and the normal boiling point is 351.4?
Calculate the mass of pure silver that when heated from 12.0 degrees celcius to 15.2 degrees celcius it required 1.25 kj of energy
Analysis of the products revealed two methylated sugars: 2,3,6-tri-O-methyl-D-glucose, 2,4-di-O-methyl-D-glucose and 2,3,4,6-tetra-O-methyl-D-glucose. The ratio of these sugars was 20:1:1. determine the structure of the polysaccharide?
A solution of ammonia and water contains 3.50×1025 water molecules and 5.80×1024 ammonia molecules. How many total hydrogen atoms are in this solution?
calculations to determine the amount of ascorbic acid? Does the volume of ascorbic acid solution added before titration influence how much iodine solution will be needed?
If 85.0 mg of fluorine-18 is shipped at 8:00 a.m., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:30 p.m. ?
Consider 2 Al + 6 HCl → 2 AlCl3 + 3 H2 , the reaction of Al with HCl to produce hydrogen gas. This reaction has a yield of 82.5 percent. How much HCl are needed to produce 14.0 L of H2 at 351 K and 1.11 atm
The disappearance of X is monitored at timed intervals. Assume that temperature and volume are kept constant. The data obtained are shown in the table below.
What is the de Broglie wavelength of a 145 g baseball traveling at 30.0 m/s (67.1mph)? Is the wavelength much larger or smaller than the diameter of an atom .
A gas is placed in a storage tank at pressure of 30.0 atm at 20.3 degrees Celsius. As a safety device, there is a small metal plug in the tank made of metal alloy that melts at 125 degrees Celsius.
If .40 mol of H2 and .15 mol of O2 were to react as completely as possible to produce H2O what mass of reactant remains?
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