Answers: 3
Chemistry, 21.06.2019 22:00
Fission of uranium-235 products energy and a. isotopes of smaller elements b. isotopes of larger elements c. lighter isotopes of uranium d. heavier isotopes of uranium
Answers: 3
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 21:30
Isopropyl alcohol, (ch3)2choh, is a common solvent. determine the percent by mass of hydrogen in isopropyl alcohol. a) 6.71% h b) 13.4% h c) 25.0% h d) 53.3% h
Answers: 1
Chemistry, 23.06.2019 07:00
How does science use models to gain a better understanding of concepts?
Answers: 1
Determine the relative formula mass of dihydrogen monoxide using the periodic table below.
A. 18 g/...
Mathematics, 18.11.2020 01:00
History, 18.11.2020 01:00
Mathematics, 18.11.2020 01:00
Mathematics, 18.11.2020 01:00
Biology, 18.11.2020 01:00
Mathematics, 18.11.2020 01:00
History, 18.11.2020 01:00
Mathematics, 18.11.2020 01:00
World Languages, 18.11.2020 01:00
Mathematics, 18.11.2020 01:00
Mathematics, 18.11.2020 01:00
Chemistry, 18.11.2020 01:00
Chemistry, 18.11.2020 01:00
Mathematics, 18.11.2020 01:00