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Which end (blue or red) of the visible spectrum has the longer wavelength? Which has the higher frequency? How are the frequency and the period of a wave related?
how many moles of co atoms are present in 5.91 middot 1019nbspcopch334nbspmolecules? express your answer in scientific
Gold has a face-centered cubic arrangement with a unit cell edge length of 4.08 . How many moles of gold fit in a sheet with a length of 72.3 , a width of 26.9 , and a thickness of 12.2
starting in the ground state n 1 is a hydrogen atom an electronis excited to a higher energy level by absorption of
Assuming no heat loss to the surroundings, calculate the mass of lead and water remaining in the bucket when the materials have reached thermal equilibrium.
What is resonance energy? Explain taking the example of benzene. What do you understand by para-directing activators, para-directing deactivators and meta-directing deactivators?
An "empty" container is not really empty if it contains air. How may moles of nitrogen are in an "empty" two-liter cola bottle at atmospheric pressure and room temperature (25 C)? Assume ideal behavior. the partial pressure of nitrogen in air at 1..
If a reference solution is made acidic instead of basic, how would this change the composition of a precipitate and test for precipitating CO32-
In the nitration of methyl benzoate, why do you wash the crystals with water followed by an ice-cold methanol washing? What is the purpose of pouring the reaction mixture over ice?
A standard oxalic acid solution is 0.065 M. It was prepared by dissolving H2C2O4*2H2O in distilled water.
What are the equilibrium concentrations of NH2OH (hydroxylamine), NH3OH+, and OH- in a 0.15 M solution of hydroxylamine (Kb=6.6*10^-9)? What is the pH of the solution
Calculate the amounts of C 7 H 8 , C 7 H 16 , and H 2 in the output stream express your answer (in mol s -1 ).
Name the alkene(s) with the molecular formula C6H12 that are unbranched and that show E/Z isomerism.
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