Chemistry, 03.09.2019 01:30 ryleerenae52
How much will be the temperature of a cup (180 gram) of coffee at 95 degree centigrade be reduced when a 45 gram silver spoon (specific heat 0.25 / g degree celsius) at 25 degree celsius is placed in the coffee and the two are allowed to reach the same temperature assume that the coffee has the same density and specific heat as water.
Answers: 3
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, 22.06.2019 08:30, MacenParisi
In the reaction between a crushed antacid tablet and vinegar what gas is emitted
Answers: 2
Chemistry, 22.06.2019 09:50, revlonknox6
Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore
Answers: 2
How much will be the temperature of a cup (180 gram) of coffee at 95 degree centigrade be reduced wh...
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