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Moles and Stoichiometry

Moles and Stoichiometry. By Avery Carrico and Nick Ponturo. Moles. Mole- used to convert from atomic mass units to grams Scientists use the mole as a unit of measurement Abbreviation= mol Amedeo Avogadro discovered the mole Avogadro ’ s number= 6.02 x 10 23. Stoichiometry.

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Moles and Stoichiometry

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  1. Moles and Stoichiometry By Avery Carrico and Nick Ponturo

  2. Moles • Mole- used to convert from atomic mass units to grams • Scientists use the mole as a unit of measurement • Abbreviation= mol • AmedeoAvogadro discovered the mole • Avogadro’s number= 6.02 x 1023

  3. Stoichiometry • Stoichiometry- The use of the amount of particles, the mass or the volume of a reactant or product to calculate the amount of particles, the mass or the volume of another reactant or product.

  4. Steps to Stoiciometry • Write balanced chemical equation • Convert quantities of known substances into moles • Use coefficients in balanced equation to calculate the number of moles of the sought quantity • Convert moles of sought quantity into desired units

  5. Conversion Factors Mole Trivia Stoichiometry 10 10 10 20 20 20 30 30 30

  6. Mole Trivia– 10 Points • QUESTION: • What is the abbreviation for Mole? • ANSWER: • Mol

  7. Mole Trivia– 20 Points • QUESTION: • What do scientists use the mole for? • ANSWER: • As a unit of measurement

  8. Mole Trivia– 30 Points • QUESTION: • Who discovered the mole? • ANSWER: • Amedeo Avogadro

  9. Conversion Factors– 10 Points • QUESTION: • How do you convert grams to moles? • ANSWER: • Divide by the molar mass

  10. Conversion Factors– 20 Points • QUESTION: • How do you convert liters to moles? • ANSWER: • Divide by 22.4

  11. Conversion Factors– 30 Points • QUESTION: • How do you convert atoms to moles. • ANSWER: • Divide by Avogadro’s number

  12. Stoichiometry– 10 Points • QUESTION: • 2H2+O22H20 • If you have 2.0 grams of O2, assuming excess H2, how many moles of H2O are created? • ANSWER: • 0.25 moles of H2O are created

  13. Stoichiometry– 20 Points • QUESTION: • 2Na + Cl2 2NaCl • If you have 3.00 moles of Na, assuming excess Cl, how many atoms of NaCl are created? • ANSWER: • 1.81 x 1024 atoms of NaCl

  14. Stoichiometry– 30 Points • QUESTION: • H2 + Cl2 2HCl • How many liters of HCl are created from 3.4g of H2, assuming excess Cl2? • ANSWER: • 75L of HCl are produced

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