Solve for the calculations A and B
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Chemistry, 22.06.2019 05:40
Salicylic acid is a very important acid. it is used to synthesize the aspirin by treating with acetic anhydride. a 0.2015-g sample of salicylic acid was dissolved in a 100.00-ml volumetric flask, and the solution was diluted to the mark. a 10-ml aliquot of this solution was titrated with standard naoh (0.01130 + 0.2% n) to a phenolphthalein faint pink color end point at 19.81 ml. (a) (calculate the normality of the salicylic acid solution used in the titration. (b) assuming the salicylic acid is pure, what is the equivalent weight of the salicylic acid? practice problems for the final exam (continued) (c) (calculate the inherent error in the determination of the equivalent weight you calculated in part (b). use the following absolute errors in the equipment /glassware when calculating the inherent error. 5.00-ml pipet: + 0.02 ml 100-ml volumetric flask: + 0.08 ml analytical balance: + 0.2 mg 25-ml buret: + 0.03 ml
Answers: 2
Chemistry, 22.06.2019 11:00
Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?
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Chemistry, 22.06.2019 20:20
Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa
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Chemistry, 22.06.2019 20:30
Which states of matter have particles that move independently of one another with very little attraction?
Answers: 1
Mathematics, 19.11.2020 18:00
Mathematics, 19.11.2020 18:00
Mathematics, 19.11.2020 18:00
Mathematics, 19.11.2020 18:00
Mathematics, 19.11.2020 18:00
Mathematics, 19.11.2020 18:00
History, 19.11.2020 18:00
Mathematics, 19.11.2020 18:00
Mathematics, 19.11.2020 18:00
Mathematics, 19.11.2020 18:00
Mathematics, 19.11.2020 18:00