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The n=8 to n=2 transition in Bohr hydrogen atom occurs in the ------------ region of the electromagnetic spectrum. A radio B ultraviolet C X-ray D infrared E microwave
An electrochemical cell has an Eocell of 1.70 V and transfers 2 moles of electrons. The Faraday constant is 96,485 C/mol e-. What is the value of delta G
how long it will take the same ammount of gaseous I2 to effuse from the same container under identical conditions.
What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse osmosis from water that is 0.154 M in sodium chloride and 0.030 M in magnesium sulfate? Assume complete dissociation for electrolytes.
Calculate the pH during the titration of 32 mL of 1.149 x 10-1 M NaOH with 1.161 x 10-1 M HBr solution after the following additions of acid.
a solution is prepared by dissolving 23.7g of CaCl2 in 375g of water. The density of the resulting solution is 1.05g/mL.
Consider the reaction: CaCO3(s)===CaO(s)+CO2(g) An equilibrium mixture of this reaction at a certain temperature was found to have [CO2] = 0.478M. What is the value of the equilibrium constant at this temperature
Treatment of 2-cyclohexenone with HCN/KCN yeilds a saturated keto nitrile rather than an unsaturated cyanohydrin. Show the structure of the product, and propose a mechanism for the reaction.
What mass of CaCO3 will produce 8.0 L of CO2, measured at standard temperature and pressure conditions? Molar mass of CaCO3 = 100. g per mole.
silver nitrate and sodium phosphate are reacted in equal amounts of 200.0 grams each to produce silver phosphate and
Use the Henderson-Hasselbalch equation to calculate the pH of a solution that is 0.195 M in C2H5NH2 and 0.155 M in C2H5NH3Br. Express your answer using two decimal places.
What volume of STP of CO2 would be produced by the fermentation of 13.94 of 13.94g of glucose?
If the cell potential is 0.061 V at 25?, what is the pH of the electrolyte at the hydrogen electrode
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