Chemistry, 17.06.2020 05:57 daniel6760
What are examples of a chemical reaction? Select all that apply. A(2AgI + Na2S β Ag2S + 2NaI B)4FeS + 7O2 β 2Fe2O3 + 4SO2 C) H2O β SiO2 D)SnO2 β Sn + 2H2O
Answers: 1
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 16:50
What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume
Answers: 2
Chemistry, 22.06.2019 19:30
Helium decays to form lithium. which equation correctly describes this decay?
Answers: 2
Chemistry, 23.06.2019 02:20
Why dose heating increase the speed at which a solution dissolved in water
Answers: 1
What are examples of a chemical reaction? Select all that apply. A(2AgI + Na2S β Ag2S + 2NaI B)4FeS...
Health, 09.03.2021 04:20
Mathematics, 09.03.2021 04:20
History, 09.03.2021 04:20
Advanced Placement (AP), 09.03.2021 04:20
Mathematics, 09.03.2021 04:20
Mathematics, 09.03.2021 04:20
Chemistry, 09.03.2021 04:20
Geography, 09.03.2021 04:20