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 23:10
Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.
Answers: 3
Chemistry, 23.06.2019 02:30
What type of energy conversion occurs when you place your feet near the fire place and they become warm
Answers: 1
Hi how are you dion today today today...
Health, 18.10.2019 10:00
Mathematics, 18.10.2019 10:00
Social Studies, 18.10.2019 10:00
Computers and Technology, 18.10.2019 10:00
History, 18.10.2019 10:00
Arts, 18.10.2019 10:00
Mathematics, 18.10.2019 10:00
Mathematics, 18.10.2019 10:00
Chemistry, 18.10.2019 10:00
Biology, 18.10.2019 10:00
Mathematics, 18.10.2019 10:00