Two students were discussing the Mono Lake ecosystem. The first student said, "For a 20-kilogram (kg) coyote to survive, it takes around 200 kg of Wilson's phalaropes, 400 kg of brine shrimp, and 800 kg of algae!" The second student said, "No, I think it takes even more than that." 1. Which student is correct? What is your reasoning?​

Classify this reaction: 2al+n2-> aln.

Select all the correct answers.which compounds have the empirical formula ch20? (multiple answers)a.c2h4o2b.c3h603c.ch2o2d.c5h1005e.c6h1206

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 .