Seleect the acid-base reaction. A. Ca(OH)₂ → CaO + H₂O
B. Zn + HCl → ZnCl₂ + H₂
C. 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
D. H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

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

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?