Converting using the Mole Concept Miss Fogg Spring

What is a particle? �A particle can refer to an individual atom OR a

Using the Mole Concept � What is the mass of 1 mole of carbon?

Using the Mole Concept � What is the mass of 2. 00 moles of

Calculating Formula Mass Calculate the formula mass of carbon dioxide, CO 2. 12. 01

Key idea: 1 mole = 602 sextillion particles Using Avogadro’s Number � How many

Using Avogadro’s Number � How 5. 5 mol many atoms are in 5. 5

Using Avogardo’s Number � If we have 4. 6 x 1024 sulfur atoms, how

Using Avogardo’s Number � How many lithium atoms are in 18. 2 g of

Converting moles to grams �How many grams of lithium are in 3. 50 moles

Using Avogardo’s Number �How many atoms of lithium are in 3. 50 moles of

Standard Molar Volume Equal volumes of all gases at the same temperature and pressure

Using Standard Molar Volume � How many moles of hydrogen are in 100 L

Using Standard Molar Volume � How many liters are occupied by 3 moles of

Liters Atoms or molecules L 22. 4 L 10 23 22. 4 x Mole

Keep track of your conversions! � Use the chart to convert between particles, moles,

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Converting using the Mole Concept Miss Fogg Spring 2016

What is a particle? �A particle can refer to an individual atom OR a type of molecule ◦ ◦ ◦ Jellybean Baseball Carbon atoms Hydrogen atoms Water molecules Carbon dioxide molecules � Whatever the case, we often need to know the mass of an individual particle in the context of the problem to use the mole concept

Using the Mole Concept � What is the mass of 1 mole of carbon? Molar mass tells you mass per mole of substance 1 mol C 12. 01 g 1 mol C = 12. 01 g

Using the Mole Concept � What is the mass of 2. 00 moles of magnesium? Molar mass tells you mass per mole of substance 2. 00 mol C 24. 305 g 1 mol C = 48. 6 g (2)(24. 305) = 48. 61 g

Calculating Formula Mass Calculate the formula mass of carbon dioxide, CO 2. 12. 01 g + 2(16. 00 g) = 44. 01 g One mole of CO 2 (6. 02 x 1023 molecules) has a mass of 44. 01 grams

Using the Mole Concept � What is the mass of 2. 00 moles of water? Molar mass H 2 O = 2(1. 01) + (16. 00) = 18. 02 g/mol H 2 O 2. 00 mol H 2 O 18. 02 g H 2 O 1 mol H 2 O = 36. 0 g (2. 00)(18. 02) = 36. 04 g

Key idea: 1 mole = 602 sextillion particles Using Avogadro’s Number � How many atoms are in 5. 5 moles of atoms? 5. 5 x (6. 02 x 1023)= On your calculator… 5. 5*(6. 02 E 23)= 3. 311 E 24 3. 311 x 1024= 3. 3 x 1024 atoms

Using Avogadro’s Number � How 5. 5 mol many atoms are in 5. 5 moles of atoms? 6. 02 x 1023 atoms 1 mol (5. 5)(6. 022 x 1023) = 3. 3 x 1024 atoms

Using Avogardo’s Number � If we have 4. 6 x 1024 sulfur atoms, how many moles do we have? 4. 6 x 1024 atoms S 1 mol S 6. 02 x 1023 atoms S (4. 6 x 1024)/(6. 022 x 1023) = 7. 6 moles Sulfur

Using Avogardo’s Number � How many lithium atoms are in 18. 2 g of lithium? 18. 2 g Li 1 mol Li 6. 94 g Li 6. 02 x 1023 atoms Li 1 mol Li (18. 2)(6. 022 x 1023)/6. 94 = 1. 58 x 1024 atoms Li

Converting moles to grams �How many grams of lithium are in 3. 50 moles of lithium? 3. 50 mol Li 6. 94 g Li 1 mol Li = 24. 3 g Li

Using Avogardo’s Number �How many atoms of lithium are in 3. 50 moles of lithium? 3. 50 mol 6. 02 x 1023 atoms 1 mol = 2. 07 x 1024 atoms

Standard Molar Volume Equal volumes of all gases at the same temperature and pressure contain the same number of molecules. - Amedeo Avogadro At STP (Standard Temperature and Pressure): 1 mole of a gas occupies 22. 4 liters of volume

Using Standard Molar Volume � How many moles of hydrogen are in 100 L of hydrogen at STP? 100 L 1 mol 22. 4 L = 4. 64 mol

Using Standard Molar Volume � How many liters are occupied by 3 moles of oxygen gas at STP? 3 mol 22. 4 L 1 mol = 67. 2 L

Liters Atoms or molecules L 22. 4 L 10 23 22. 4 x Mole Atomic Mass 6. 02 Grams Mole Relationships

Keep track of your conversions! � Use the chart to convert between particles, moles, and volume

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