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Mole Ratios in Chemical Equations LG: I can predict the amount (moles) of reactant or product used or created during a chemical reaction.

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Presentation on theme: "Mole Ratios in Chemical Equations LG: I can predict the amount (moles) of reactant or product used or created during a chemical reaction."— Presentation transcript:

1 Mole Ratios in Chemical Equations LG: I can predict the amount (moles) of reactant or product used or created during a chemical reaction

2 Mole Ratios Balanced chemical equations indicate the ratio of one chemical to another used in a reaction This ratio indicates the relative number of entities, not the mass, of each substance Example: 2 H 2(g) + O 2(g)  2 H 2 O (g)

3 Gimme S’more Stoichiometry! Use the recipe for S’mores to investigate the ratios of reactants and products in chemical reactions

4 Example The Haber process is used to manufacture ammonia, used in fertilizer, from hydrogen and nitrogen gas N 2(g) + H 2(g)  NH 3 Balance the equation above to determine the mole ratio in the reaction – How many moles of hydrogen would be required to react with 6.2 mol of nitrogen gas? – If the amount of nitrogen was unlimited, how many moles of ammonia could be produced from 10.8 mol of hydrogen? – If you had 3.0mol of N 2 and 8.0mol of H 2, which substance would run out first (limiting reagent)? How much product could be made? How much excess reagent would remain after the reaction?

5 Homework Complete Mole Ratios Handout


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