What can you infer from the fact that global warming has only been a problem for the last 100 years or so? Prior to 100 years ago, the greenhouse effect on the earth was too minor to be detected.

The earth moved significantly closer to the sun about 100 years ago.

People have only been pumping large quantities of

greenhouse gases into the atmosphere for 100 years or

so.

The movement of glaciers was a major problem for

people 100 years ago.

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

What is the percentage composition of carbon in the compound ch4

What must occur for air masses to form fronts