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When filling a cuvette with distilled water and measuring it with a spectrofluorometer, upon excitation at 350nm, a band around 397nm appears. This is either a fluorescence band or a Raman band. Suggest what you can do experimentally to identify which type of band it is, and why.
what volume of O2(g), measured at 17.7 degrees C and 0.978 atm reacts with 15.1 g C4H10 to produce CO2(g) and H2)(l)? Hint: you must write a balanced equation for the reaction.
What is the entropy change for a particle in this system if the final number of microstates is 0.819 times that of the initial number of microstates?
What is the pH of a buffer that results when 0.50 mole of Na3PO4 is mixed with 0.75 mole of HCl and diluted with water to 1.00 L? The acid dissociation constants for phosphoric acid
HCL acid solution is standardized using 0.502g of sodium carbonate. Find the molarity of the acid if 30.5mL are required for the titration.
Why is mercury being replaced by other liquids such as colored alcohol as the temperature-sensing fluid
in photosynthesis, plants use energy from the sun in combination with carbon dioxide and water to form glucose (C6H12O6) and oxygen. If 4.50 moles of water react with carbon dioxide, what mass of glucose is produced?
How many grams of dry NH4Cl need to be added to 2.00 L of a 0.600 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.89?
Calculate the osmotic pressure of the mannitol solution of part( b ) when it is measured against pure water, and compare it withthe osmotic pressure of the ideal solution.
Ttotal ammonia concentration = 0.400 M. determine What is the concentration of NH 4 + ?
The first mechanism includes sodium acetate to yield beta-penta-acetate and the first mechanism includes zinc chloride (Lewis acid) to form an oxonium ion to yield the alpha-penta-acetate product. Any help to draw out the mechs would be much appre..
The problem: CaCO3 can be roasted to produce CaO and CO2. This reaction is carried out in a flash connected to an open-end mercury manometer when the atmospheric pressure is 754 torr
From the plots of the boiling point versus the volume of distillate in the simple distillation experiments, what can you conclude
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