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Published byLily Leadley Modified over 2 years ago

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Stoichiometry –The calculation of quantities using chemical reactions –Example: If we want to make 1.5 moles of Fe 2 O 3 using Fe + O 2, how much do we need of the reactants to start?

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Mole Ratio –Conversion factor derived from the coefficients of a balanced equation. –It’s the BRIDGE to get across to other elements/compounds

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N 2 + 3H 2 2 NH 3 1 mole N 2 / 3 mole H 2 2 mole NH 3 / 1 mole N 2 3 mole H 2 / 2 mole NH 3

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Mole-Mole Calculations Predict products (possible) Balance equation Determine mole ratios Start with what the problem gives you - ALWAYS! Use the correct mole ratio

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Magnesium and oxygen react to form ____________. How many moles of the product are produced when 1.2 moles of oxygen react with excess magnesium? How many moles of magnesium reacted in the problem above?

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