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Stoichiometry - Peanut Butter and Jelly Chemistry!

Learn stoichiometry basics through the analogy of making peanut butter and jelly sandwiches. Understand balanced equations, mole ratios, and converting between moles and grams. Perfect for chemistry students!

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Stoichiometry - Peanut Butter and Jelly Chemistry!

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  1. STOICHIOMETRY

  2. Peanut Butter and Jelly!

  3. Same thing with chemical reactions

  4. Key Points: • Need a balanced equation • Compare materials using coefficients (mole ratio) • Any material can be compared to any other material in the equation (using moles) … some materials will be ignored.

  5. Ca + KCl  K + CaCl2 • What do we need to do first? • How many moles of KCl are required to react with 1 mole of Ca? • How many moles of KCl are required to react with 5 moles of Ca? • If I react 6 moles of calcium with 12 moles of potassium chloride, how many moles of potassium are produced?

  6. Problem … • I can’t measure out “moles” • I can measure “grams” • Need to use Molar Mass from the Periodic Table to convert between grams and moles

  7. NaF + CaBr2 CaF2 + NaBr • How many grams of CaBr2 are required to completely react with 275 grams of NaF?

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