cho 28,1 gồm kẽm và bạc tác dụng vừa đủ với 200g dung dịch axit sunfuric loãng, sau phản ứng thu được 2,24 lít khí (đktc).xác định phần trăm khối lượng mỗi kim loại có trong hỗn hợp đầu và nồng độ phần trăm của các chất có trong dung dịch sau phản ứng

What is true for a substance that releases energy

How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process

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 .