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What type of compound is produced by the reduction of aldehydes and ketones?
At volume of 0.200 M K2Cr2O7 will be required to oxidize the Fe2+ iron in 60.0 mL of .200 M FeSO4 solution?
Identify the subshell in which electrons with the quantum number n = 5, l = 4 are found. (Just write A,B, C, D, or E on the answer sheet) a) 5d b) 5p c) 5g d) 5f e) 4f
Calcium carbonate is a major contributor to the "hardness" of water.
You have a sugar solution( solution A) with concentration x. You pour 1/4 of this solution into a beaker, and add an equivalent volume of water (solution B)
A gas is expanded in a cylinder from 2.00 L to 12.0 L against an external pressure of 1.80 atm. At the same time, it absorbs 2.56 x 103 J of heat from the surroundings. Calculate ?E of the gas in J.
A particular first-order reaction has a rate constant of 1.35x10^2 at 20 degrees C . What is the magnitude of k at 75 degrees C if Ea =85.6Kj/mol?
What volume of H2 (at 25oC and 1.00 atm ) can be produced by reaction of 161 g Fe and 202 g of HCl? (Atomic weights: Fe = 55.85, Cl = 35.45, H = 1.008).
When 5.00 g of fructose, C6H12O6, (FW 180.16 g/mol) is burned in a calorimeter whose heat capacity is 29.7 kJ/oK, the temperature increases by 2.635oK. Calculate the heat of combustion of fructose i
What are the odds of finding a particle in a one dimensional box between 0 and L/2, where L is the length of the box. Assume that the particle is in the second to lowest energy level (n = 2).
When separating a solid-solid mixture in lab, do the melting points of the two components have to be 30 degrees apart, like with boiling points, to be considered pure, or is it a different range?
A 520.0 mL of a buffer solution that is 0.175 M in HC2H3O2 and 0.165 M in NaC2H3O2, Calculate the inital pH and the final pH after adding 0.020 mol of HCl
The air is breathed underwater at 100 feet where the total pressure is 4.1 atm. What is the partial pressure (atm) of oxygen under these conditions? Calculate the relative rate of diffusion of CO2 c
What is the pH of a buffer that results when 0.50 mole of H3PO4 is mixed with 0.75 mole of NaOH and diluted with water to 1.00 L, The acid dissociation constants of phosphoric acid are Ka1 = 7.5 x 1
A solution is prepared by dissolving 5.32 grams of potassium nitrite (a food preservative, as Clark Griswold would explain) into about100 ml of DI water in a volumetric flask. Enough water is then a
A constant electric current deposits 0.365 g of silver metal in 12960 seconds from a solution of silver nitrate. What is the current? What is the half reaction for the deposition of silver. Molar ma
The value of Delta g for the conversion of 3-phosphoglycerate to 2-phosphoglycerate (2PG) is +4.4 kj/mol. If the concentration of 3-phosphoglycerate at equilibrium is 2.55 mM, what is the concentrac
How will this inadvertent transfer affect the calculated solubility product for calcium hydroxide. How will this inadvertent transfer affect the calculated molar solubility for calcium hydroxide &nbs
An aqueous solution containing barium iodide (BaI2) is electrolyzed in a cell containing inert electrodes. The products at the anode and cathode are
Aluminum metal is made industrially by electrolysis of Al2O3 dissolved in molten Na3AlF6. How many grams of Al metal are produced when 8.80 X 103 coulombs pass through the cell?
A supernatant from a saturated calcium hydroxide solution is titrated with a standardized hydrochloric acid solution to the methyl orange endpoint
When a strong base is added to a solution of CuSO4, which is pale blue, a precipitate forms and the solution above the precipitate is colorless. What is the net chemical equation that describes this
Draw out partial pathways to show which carbon(s) of glucose are lost in the first two cycles of the TCA cycle after entry as acetyl CoA fragments.