Chemistry, 25.08.2019 04:20 Ashthegreat
How many milliliters of a 3.0 m hcl solution are required to make 250.0 milliliters of 1.2 m hcl?
Answers: 2
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 20:30
How many grams of phosphorus are contained in 5.09 moles of phosphorus?
Answers: 1
How many milliliters of a 3.0 m hcl solution are required to make 250.0 milliliters of 1.2 m hcl?...
Social Studies, 22.06.2019 04:00
English, 22.06.2019 04:00
World Languages, 22.06.2019 04:00
History, 22.06.2019 04:00
Business, 22.06.2019 04:00
History, 22.06.2019 04:00
Mathematics, 22.06.2019 04:10
Mathematics, 22.06.2019 04:10
Geography, 22.06.2019 04:10