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1. A volume of saline solution has a mass of 25.6 g at 4 °C. An equal volume of water at the same temperature has a mass of 24.5 g.
2. What is the density of the saline solution? Children's Liquid Motrin contains 100. mg of the pain reliever ibuprofen per 5 mL. If the dose for a 45.0 lb child is 1.5 teaspoons, how many grams of ibuprofen would the child receive?
calculate for the combustion of octane by using enthalpies of
The activation energy of a certain reaction is 45.4kJ/mol. At 28 degrees celcius, the rate constant is 0.0150s^?1. At what temperature in degrees Celsius would this reaction go twice as fast?
Can SO2 be maintained a liquid under a pressure of 100atm at 0 C. Can liquid methane be obtained under the same conditions.
A 113L sample of helium at 27 degrees Celsius is cooled at a constant pressure to -78 degrees Celsius. calculate the new volume of the helium.
the rate of bimolecular reaction is affected by concentrations of reactants presence of a catalyst and temperature, Concentration of a pure solid and a liquid can be ommitted from the equilibrium equation as the concentration ratio of these equal to..
The solubility of Pb(NO3)2 is 55 gramsper 100 g H2O at 20 degrees celcius. Which term would properly describe a soloution where 44 grams of Pb(NO3)2 is added to 100 grams of water at this temperature
What is the hybridization of the nitrogen atom in sulfathiazole? Assuming that the sulfur atom is sp2-hybridized, how many -electrons are there in the sulfathiazole ring?
the decomposition of potassium chlorate kclo3 is used as a source of oxygen in the laboratory. how much potassium
Provide a complete mechanism for the formation of 1,4-di-t-butylbenzene from t-butyl benzene, AlCl3, and t-butyl chloride. provide all resonance and intermediates. why is para preferred over meta and ortho
Amyl alcohol can burn in oxygen to produce carbon dioxide and water. If amyl alcohol is C5H11OH and oxygen a diatomic gas O2, write and balance the combustion equation and answer the following
What is the limiting reagent? What is the theoretical yield of acetanilide? What is the percent yield if 3.3g of acetanilide is obtained?
The ozonide of buckminsterfullerene C60O3 decomposes into C60O + O2 with an activation energy of 89 kJ/mol as well as an Arrhenius prefactor of 2x1014 s-1.
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