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Calculate the velocity (in units of m/s) of an electron having a mass of 9.09 x 10 -28 g and wavelength of 99.9 nm
what is the annual cost of operation in a 70°F room if the door is opened 10 times a day with an average heat gain per opening of 200 kJ? How much would it cost to keep the inside at 35° F? Show work.
For the neutralization reaction involving HNO3 and Ca(OH)2, how many liters of 1.55 M HNO3 are needed to react with 45.8 mL of a 4.66 M Ca(OH)2 solution?
How many grams of ethylene glycol would be needed to prevent 4kg of water from freezing above -5.0 degress C
In an experiment that is performed you use 1-hexene and is reacted with H2SO4 with water as the solvent. The product formed is 2-hexanol, is this an example of 1,4 addition, or proceeds via a carbanion,
the chromatographic paper in the spot testing chromatogram. predict the effect of this procedural change on the solution of the cation in the standard mixture
I dissolved .5 grams of mustard in 3 mL of distilled water. I was asked to determine the mass percentage of acetic acid in mustard, so I added 2.5 mL of NaOH to turn the mustard solution red.
Suppose that 27 g of each of the following substances is initially at 29.0 C. What is the final temperature of each substance upon absorbing 2.45 kJ of heat?
A+B+C =D The rate law for this reaction is Rate=k [A][C] 2/[B]^1/2 Suppose the rate reaction at certain initial concentration of A, B, and C is 1.14*10^-2 M/s.
Classify the following compounds and ions as strong acid, weak acid, strong base, weak base, or neutral. For each write the reaction(s) that justify your decision. If a substance is amphiprotic, show both reactions.
effuses through a hole in a plate in the same amount of time it takes 20.54 mL of another gas to effuse through the same hole under the same temperature and pressure conditions. Determine the molar mass of the unknown gas.
Consider the following standard reduction potentials in acid solution: Cr3+ + 3e- ? Cr Eo = -0.74 V, Co2 + 2e- ? Co Eo = -0.28 V, MnO4 + 8H+ + 5e- ? Mn2+ + 4H2 Eo = +1.51 V
Enzymes in the human liver catalyze a large number of reactions that degrade ingested toxic chemicals. By what factor is the rate of a detoxification reaction changed
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