The effective molar mass of ashes has units of grams of ashes per mole of base provided. the mass of the ashes in the experiment is given, 20.4 g. the rest of the work involves determining the amount of base provided, in moles. we will first determine the moles of base used in the titration. what volume of acid was used in the experiment?

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .

According to thomson, the atom is a positively charged cloud with electrons scattered throughout. what would the alpha particles do when they hit the foil if thomson were correct