Chemistry, 28.06.2019 07:30 rhucke99121
Copper is a metal that is used for many purposes. it is mined from the earth using various methods. though the amount of copper in the earth's crust is very large, if the mining of copper continues, it will eventually run out. all but one method listed below will conserve the world copper supply. which method might actually increase copper mining? a) a plan to collect copper bound for landfills and recycling it instead b) the development of a cheaper and more efficient way to mine for copper c) development of a material that could serve as a substitute for copper wiring d) the use of other metals to replace the copper normally found in electric motors
Answers: 2
Chemistry, 22.06.2019 20:30
Water undergoes a large change in density at 0 ∘ c as it freezes to form ice. calculate the percent change in density that occurs when liquid water freezes to ice at 0 ∘ c given that
Answers: 2
Chemistry, 22.06.2019 23:30
Rank the following four acids in order of increasing bronsted acidity : h2f+ , ch3oh, (ch3)2oh+ , ch3sh2+
Answers: 3
Chemistry, 23.06.2019 04:30
Two liquids are poured into a beaker. after a few seconds, the beaker becomes warm. which of the following best describes this reaction? a. an exothermic reaction b. a decomposition reaction c. an endothermic reaction d. a single-displacement reaction
Answers: 1
Copper is a metal that is used for many purposes. it is mined from the earth using various methods....
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