QUICK CHECK
Which would result in radioactive decay? Check all that apply.
a neutron-to-proton ratio of 1:1 in a small nucleus
a neutron-to-proton ratio of 1:2 in a large nucleus
ОООО
a nucleus that contains 90 protons and 100 neutrons
a nucleus that contains 8 protons and 8 neutrons
any isotope of the element uranium, which has atomic number 92
any isotope of the element potassium, which has atomic number 19
DONE

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 a metal replacement reaction

The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as