By Avery Carrico and Nick Ponturo
• 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 1023
• 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.
• 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
Mole Trivia Conversion Factors Stoichiometry
10
20
30 30
20
10
30
20
10
QUESTION:
•What is the abbreviation for Mole?
ANSWER:
•Mol
QUESTION:
•What do scientists use the mole for?
ANSWER:
•As a unit of measurement
QUESTION:
•Who discovered the mole?
ANSWER:
•Amedeo Avogadro
QUESTION:
•How do you convert grams to moles?
ANSWER:
•Divide by the molar mass
QUESTION:
•How do you convert liters to moles?ANSWER:
•Divide by 22.4
QUESTION:
•How do you convert atoms to moles.
ANSWER:
•Divide by Avogadro’s number
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
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
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