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Explain at what temperature will the root-mean-square speed, Urms for Neon gas (Ne) the same as the root-mean-square speed, Urms of Helium(He) at 20 degrees C
Pure alpha-D-glucose has a specific rotation=+112.2 degrees and pure beta-D-glucose has a specific rotation=+18.7 degrees. What is the composition of a sample of a mixed alpha and beta-D-glucose that has a specific rotation=+83.0 degrees?
When the reaction is finished, the chemist collects 19.4 g of CaCO3. Determine the limiting reactant, theoretical yield, and percent yield for the reaction.
An aqueous solution containing 21.6 mg of vasopressin in 100.0 mL of solution has an osmotic pressure at 25.0 oC of 3.70 mmHg. What is the molecular weight of the hormone?
In some communities, products that contain phosphates are banned from sale because of pollution of well water, streams, and coastal bay. How could these salts enter the environment. How could the authorities test for the presence of phosphates in ..
The combustion of 40.5 mg of a compound containing C, H and O produces 110.0 mg of CO2 and 22.5 mg of H20. The molar mass of the compound is 162g/mol. Determine its empirical and molecular formulas
An average adult inhales a volume of 0.50 l of air with each breath. if the air is warmed from room temperature (20c) to body temperature (37c) while in the lungs.
Liquid-in-glass thermometer are of two types:mercury in glass and alcohol plus red dye in glass. the dependence of volume on temperature of mercury and alcohol.
Consider the gas phase reaction: 2SO2(g) + O2 (g) 2 SO3 (g). delta H°=-198 kJ/mol. a) How would you change temperature, pressure, and volume of the container to maximize production of SO3. Increase, decrease, or expect no effect
A soft drink contains 35 mg. of sodium in 316g. of H2O. What is the concentration of sodium in the soft drink in mass percent?
solid sodium metal reacts with water, giving a solution of sodium hydroxide and releasing hydrogen gas
Thomas Jefferson Snodgrass found an unlabelled reagent bottle in his -80 C freezer. The Bottle contained a liquid. He found that the compound( compound 1) quickly evaporated when warmed to room temperature. H-NMR of the compound showed only two pe..
What is the boiling point of a solution made using 813g of sucrose, C12H22O11, in 0.275 kg of water,H2O.
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