calculate the theoretical weight (mass) of the product hydrobenzoin if 50.00 mg of benzil is reduced by 10.50 mg of nabh4. keep 2 digits after the decimal point .
benzil -> (nabh4) -> hydrobenzoin
physical constants
mw. mp
benzil 210.22. 94-95
hydrobenzoin ( s, s or r, r) 214.27. 148.5-149.5
hydrobenzoin. (meso). same. 137-139
hydrobenzoin. (racemic). same. 122-123
sodium borohydride 37.83. 400 d

Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.