Which numbers are Speed, Velocity or acceleration 1. Grey whales Begin their migration in september traveling south averaging 75 miles per day. 2. A carousel spins in a circular path. 3. An airplane increases speed as it takes off. 4. Usain Bolts fastest running speed was clocked at 27.8 mph. 5. A train is moving at a constant speed of 23 miles per hour.

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 .