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Briefly explain the ideas or concepts behind Beer's law. What are the two conditions that will make the molar extinction coefficient (ε) a constant?
How many H- ions are around each Na+ ion in NaH, which has a cubic unit cell with H- ions on each corner and each face
Aldose A undergoess Ruff degredation to give Compound C. When Compound C is treated with NaBH4, optically inactive alditol D is formed.
Regarding the reaction of the products that correspond to syn addition of Br2 to trans cinnamic acid and those that correspond to anti addition, why would you isolate a pair of enantiomers rather than a single enantiomer from this reaction
The volume of a sample of gas, initially at 25oC, increase from 158 ml to 450 ml. What is the final temperature (C) if the pressure in the container is kept constant.
oxygen makes up 46.7 by mass of the earths crust. how many grams of oxygen are present if a sample of the earths crust
Estimate the triple point pressure and teperature of water, given that the standard enthalpies of fusion and vaporization are 6008 J/mol and 43990 J/g at 273.15 K and 298.15 K, repectively
When 25g of magnesium reacts with 75g of hydrochloric acid it produces 95g of magnesium chloride and hydrogen gas.
part 1 how much in grams of a 18.4g sample of ccl4 iscarbon?part 2 a sample of a compound has the following
How many grams of P2O5 gas are present in a 750 ml container that is at 75 degrees C and at a pressure of 590 mm Hg?
Use the standard half-cell potentials listed below to calculate the standard cell potential for the following reaction occurring in an electrochemical cell at 25°C.
Naturally occurring cobalt consists of only one isotope, ^59Co, whose relative atomic mass is 58.9332. A synthetic radioactive isotope of cobalt, ^60Co, relative atomic mass 59.9338, is used in radiation therapy for cancer.
Compare the electron-dot of CH4 and H2O. Why do these molecules have similar bond angels but different names for their shapes
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