How many moles of oxygen are required to react with 12 moles of FeS2? 4FeS2 + 11O2 → 2Fe2O3 + 8SO2

What are transitions between a liquid and gas called? identify which way they are transitioning

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Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules