Dùng thuyết lai hóa, hãy giải thích sự hình thành liên kết trong phân tử NF3. Cho biết góc liên kết ^FNF là 102o và 7N, 9F.

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 .

In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above

Stoichiometry- i need with 14 and 15! an explanation would be appreciated!