Which word equation best describes the following formula equation:
4Al+3O2β2Al2O3?
A. F...
Which word equation best describes the following formula equation:
4Al+3O2β2Al2O3?
A. Four molecules of aluminum and three molecules of diatomic oxygen react to form two molecules of aluminum oxide.
B. Aluminum reacts with oxide to form aluminum oxide.
C. Four molecules of aluminum react with six molecules of oxide to form twelve molecules of aluminum oxide.
D. Two molecules of aluminum oxide reacts to form three molecules of oxygen and four molecules of aluminum.
Answers: 1
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 06:00, Sarahinator04
0.09 moles of sodium sulfate in 12 ml of solution
Answers: 3
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