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When measured in a 1.00 cm cuvet, a 8.50 X 10-5Msolution of species A exhibited absorbances of 0.129 and 0.764 at475 nm and 700 nm,respectively. A 4.65 X 10-5 Msolutionof species B gave absorbances of 0.567 and0.083 at 475 nm and 700nm, respectively. Both species were dissolved in thesame solvent,and the solvent s absorbance was 0.005 and 0.000 at 475 nm and700nm, respectively. Calculate the molar absorptivities for species A.
Consider a glass of 215 mL of water at 28°C. Calculate the mass of ice at -15°C that must be added to cool the water to 10°C after thermal equilibrium is achieved.
Describe the characteristic infrared absorption frequencies that would allow you to distinguish between the following pairs of compounds.
Consider the following liquids with similar molar masses. Predict which has the strongest intermolecular attraction based only on vapor pressure data.
question suppose the current flowing from a battery is used to electroplate an object with silver. calculate the mass
If more than one precipitate is expected, list the numbers in increasing order and separate them with commas. For example, 3,4,5 is ok but 5,4,3 is not. pH = 7.00: pH = 9.00: What is the pH to the nearest 0.1 pH unit at which Cd(OH)2 begins to pre..
aspartame c14h18n2o5 is a solid used as an artificial sweetener. its combustion produces carbon dioxide gas liquid
Pin on disk machine and machined the important related to industry applications in this machine.
In lab we are doing chemical kinetics. We started off with 0.7550 M of Oxalic acid and then added water and 0.1300 M of Permanganate. For the first trial, 5 mL of Oxalic acid was used, then 6 mL of water were added and then 1 mL of Permanganate we..
the standard molar enthalpy of vaporization for water is 40.79kj/mol. what mass of steam is required to release 500. kj of energy upon condensation.
Why we have a decrease in in the volume of the crude organic product during the extraction with HCl. What causes this decrease
Chloroform is an excellent solvent for extracting caffeine from water. KD = 9 for caffeine in chloroform-water at 25 degrees celecius. What weight of caffeine would be recovered from a solution of 4.0 g caffeine in 100 mL water by a single extract..
Calculate the density of air at the experimental conditons identified in part A C) Calculate the mass of air in the flask before the liquid was added.
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