The 1st Amendment protects the people’s right to assembly and protest, as long as they do so peacefully. Demonstrators excercised thus right as part of the Occupy Wall Street movement that began in 2011 to protest social and economic inequalities in the U. S. yet, to date, more than 7,000 Occupy protesters have been arrested. Right-to-demonstrate cases, such as this one, raise many difficult questions. Under what circumstances do you think government should be able to regulate demonstrations?

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 .