Apiece of sodium metal reacts completely with water as follows: 2na(s) + 2h2o(l) ⟶ 2naoh(aq) + h2(g) the hydrogen gas generated is collected over water at 25.0°c. the volume of the gas is 246 ml measured at 1.00 atm. calculate the number of grams of sodium used in the reaction. (vapor pressure of water at 25°c = 0.0313 atm.)

What three natural resources are found in the great lakes region

How many miles of water are produced if 5.43 mol pbo2 are consumed

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