Chemistry, 19.03.2021 01:00 kaitlyn114433
The diagram below shows a representation of a sample of gas at 25°C. Which of the following best represents the same gas at 0.0°C? A B С or D (The diagram is attached)
Answers: 1
Chemistry, 21.06.2019 18:10
Which is true of transition metals when moving from left to right on the periodic table? the d sublevels are not filled across the period. the cation radii become larger across the period. atomic radii increase slightly and then start to decrease. atomic radii decrease slightly and then start to increase. o
Answers: 2
Chemistry, 21.06.2019 19:30
Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)
Answers: 1
Chemistry, 21.06.2019 22:30
For the following, determine the type of reaction and then give products.
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
The diagram below shows a representation of a sample of gas at 25°C. Which of the following best rep...
Computers and Technology, 19.12.2019 03:31