Chemistry, 26.08.2019 16:00 erenackermanlevijaeg
Anail rusts when the iron in the nail reacts very slowly with oxygen to form a new substance and heat. this is an example of a(n) reaction.
a. fusion
b. fission
c. exothermic
d. endothermic
Answers: 1
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 07:30
Identify two types of chemical bonding in the source of dietary potassium
Answers: 3
Chemistry, 22.06.2019 22:30
What is a number added in front of a formula in order to balance the equation
Answers: 1
Chemistry, 23.06.2019 17:30
If 2.40 moles of gas are held at a temperature of 97.0 Β°c in a container with a volume of 45.0 l, what is the pressure of the gas?
Answers: 1
Anail rusts when the iron in the nail reacts very slowly with oxygen to form a new substance and hea...
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