ERTH 308 Final Exam Uofc Exam Questions With Complete Solutions | Updated 2026 | Guaranteed Pass

ERTH 308 Final Exam Uofc Exam Questions With Complete Solutions | Updated 2026 | Guaranteed Pass How much of the worlds Cu does Chile produce? - answer-1/3 What is the avg concentration of Cu in the rock mined at Las Pelembres? - answer-1% How deep is the snow at Las Pelambres? - answer-5m What were some of the things in the hospital made out of copper? - answer-Bed rails, sinks, and a stethoscope What country controls the worlds largest reserves of rare earth elements? - answer-China (90% is refined there) What is one of the most widely used products that rare earths are necessry for? - answer-Magnets Separating rare earths from the rock they are in requires a huge amount of.... - answer-energy All of these minerals are considered conflict minerals, due to their potential origin in the Democratic Republic of Congo - answer-Tin, tantalum, tungsten and gold Coltan stands for? - answer-columbite-tantalite mineral. It is a vital source for elements niobium and tantalum, which are used to create capacitors for modern electronics like smartphones and laptops. What does tin (Sn) do in the phone? - answer-tin solders the circuit board What does tantalum (Ta) do in the phone? - answer-tantalum stores electricity for its batteryWhat does tungsten (W) do in the phone? - answer-tungsten makes your phone vibrate What does gold(Au) do in the phone? - answer-gold coats its wires What percentage of the world's copper is produced by Chile? - answer-About a third What is the average concentration of copper in the rock mined at Las Pelambres? - answer-1% How deep is the snow in winter at Las Pelambres? - answer-5 meters What are some items in hospitals made of copper? - answer-Bed rails, sink, stethoscope What jobs are available at the US Borax mine? - answer-Chemist, geologist, engineer, environmental scientist, millwright, electrician, equipment operator, shipping team, commercial team, strategic planning, quality specialist Where does 90% of the world's rare earth refining happen? - answer-China What are magnets used for that require rare earth elements? - answer-One of the most widely applicable products What is required to separate rare earths from the rock? - answer-A huge amount of energy