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A solution of 2.50 grams of a compound having the empirical formula c6h5p in 25.0 grams of benzene in observed to freeze at 4.3 degree celcius. calculate the molar mass of the solute and its molecular formula.
In ethanol, with an absorbance of 1.210 (no units) at a wavelength of 530 nm. At this wavelength, the extinction coefficient of rhodamine 6G in EtOH is 116,000M^-1 cm^-1. If I have a 0.100 M solution of rhodamine 6G, what pathlength cell will be n..
Draw the abbreviated structural formula of the products of the complete hydrolysis of lidocain
nicotine a component of tobacco is composed of c h and n. a 12.075 mg sample of nicotine was combusted producing 32.757
Compute the pH of a solution made by mixing 67 grams of sodium acetate, NaCH 3 COO, to 37 g of acetic acid, CH 3 COOH, and dissolving in H 2 O to form 300. mL of solution ?
The hydration of carbon dioxide (add water to CO2) produces carbonic acid and is part of the equilibrium that controls carbon dioxide levels in the blood during respiration of vertebrate organisms. How can this reaction be explained using the Lewi..
What mass of Na2CO3 is needed to prepare 250.mL of 0.0500 Molartity of Na2CO3 solution
A 20.0-mL sample of 0.200 M HBr solution is titrated with 0.200 M NaOH solution. Calculate the pH of the solution after the following volumes of base have been added.
Regiochemistry and stereochemistry in diels-alder reactions, How does one predict which regioisomer forms as the major product when more than one product can form? How does the dienophile affect the stereochemistry of the product?
A ketone with a formula of C5H10O undergoes alkylation, but can give two isomeric products depending on the reaction conditions. Each of these potential products (A and B) has the forumla C6H12O.
A 4.80 g nugget of pure gold absorbed 288 J of heat. What was the final temperature of the gold if the initial temperature was 26.0°C.
Chemists know that by adding a very slight excess of silver nitrate to a solution containing chloride ion, it is possible to effectively remove all the chloride ion from the sample as silver chloride.
The analysis was completed by titrating the excess acid with 11.37 mL of 0.1080 M NaOH. How many of these tablets represent a proper dose for patients whose weight is 100 lb (assume that 1 pound, lb, is 0.45 kg).
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