Magnesium reacts with bromine to form magnesium bromide, MgBr2. Magnesium bromide is an ionic solid at room temperature.
Explain, in terms of movement of electrons, how magnesium bromide is formed by the
reaction of magnesium with bromine.

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

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

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule