The pesticide DDT was first made by a chemical company in 1939 and became widely used worldwide. Evidence that DDT builds up in animal tissues and may cause health problems such as cancer and damage to organs, as detailed in Rachel Carson’s book Silent Spring, resulted in DDT being banned in the US in 1972. How do you suppose science and society were affected by the ban of DDT?

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule

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 .