Salia is creating a diagram to show how rocks go through the steps of the rock cycle. Her diagram shows the processes that occur to change rocks from one type into another type. Write an answer for the following question in the space provided. Do rocks always follow the same steps when they go through the rock cycle? Give an example to support your answer

Which three statements represent the benefits of performing experiments using computer simulations?

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 .

How many atoms or molecules are there in a mole of a substance?