【简答题】Ladies and gentlemen, I am happy to introduce to you Mr. Wang Qiang , out new sales manager. He is an expert in sales and marketing. For the last three years, Mr. Wang has worked for JHS Company. Toda...
【简答题】A compound of formula weight 320 absorbed 60.0% of the radiation at a certain wavelength in a 1 cm cell at a concentration of 20.0 gg/ml. Calculate its molar absorptivityat the wavelength.