Chemistry, 10.06.2020 18:57 viktoria1198zz
A weather balloon calibrated at 0.00 °C to have a volume of 20.0 L has what volume at -40.0 °C assuming pressure is held constant?
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 08:30
Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?
Answers: 1
Chemistry, 23.06.2019 01:00
Na chemical reaction, activation energy increases the of the reactants. this outcome causes the particles to collide, which results in the of new products.
Answers: 2
A weather balloon calibrated at 0.00 °C to have a volume of 20.0 L has
what volume at -40.0 °C assu...
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