Chemistry, 24.01.2020 18:31 hurricane01
In the balance equation 2c2h6+7o2=4co2+6h2o 10 g of c2h6 react with 42.5 g o2 what is the excess reactant
Answers: 2
Chemistry, 22.06.2019 05:40, Maryjasmine8001
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, 23.06.2019 08:30, lowkstahyna
What percentage of energy used in the u. s is produced from fossil fuels
Answers: 2
In the balance equation 2c2h6+7o2=4co2+6h2o 10 g of c2h6 react with 42.5 g o2 what is the excess rea...
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