14. The student discovered that the wire loop rotates 300 times every second. The student then reduced the number of loops by half and
discovered that the wire loop rotated half as fast.
After the number of wire loops had been reduced by half, how many
rotations did the wire loop complete in 10 seconds?
M. 150
P. 300
R. 1,500
S. 3,000

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 .