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Explain what physical process takes place to the electrons of a pi bond when it absorbs a photon of ultraviolet light?
Which of the two. Cloud droplets or raindrops are expected to be more effective in scavenging gases from the atmosphere. Explain your reasoning
what is the name and formula for a compound with a composition percent of 77.7% Fe, 22.3% O and a molar mass of 71.85
For lab this week i need to separate a mixture of caffeine and Phenacetin using Acid-BAse Extraction. What reagent should i use for the separation of components by extraction of the dichloro methane layer
The pressure on a gas at -77 deg. C is doubled, but it's volume is held constant. What will the final temperature be in degrees C
A magnesium goes from its grond state to its first electronically excited state. I assume the ground state is a singlet.
Unfold the enzyme with urea and 2-mercaptoethanol. Then incubate and crystallize it in the presence of the substrate followed by X-ray crystallography.
the instruction booklet for your pressure cooker indicates that its highest setting is 12.5 . you know that standard
A 0.233 g sample of an unknown monoprotic acid was titrated with 0.105 M KOH and the resulting titration curve is shown below. It took 35 mL to reach the equivalence point. What is the molar mass of the acid
Calculate the percent yield if the actual yield of aluminum oxide is 0.423mol.
when 500 L of a 2.0 M solution of Pb(NO3)2 is mixed with an excess of 1.00 M solution of KI, how many grams of lead(II) iodine are formed?
A gas in a container is expanded by 0.25 of the original volume to a total of 15 dm^3 at constant temperature. The resultant pressure is 20 bar. What was the original pressure before the compression assuming perfect gas behavior
In the preparation of amides, acid chlorides or anhydrides may be used to react with the selected amine. It is known that acid chlorides are more reactive than the corresponding anhydrides in this type of nucleophilic acyl substitution reaction.
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