Moles Molar Mass 10 1 The Mole Molar

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Moles & Molar Mass 10. 1 The Mole &Molar Mass 10. 2 Mole Relationships

Moles & Molar Mass 10. 1 The Mole &Molar Mass 10. 2 Mole Relationships in Chemical Equations 12. 2 Mass Calculations for Reactions 1

Collection Terms 1 trio = 3 singers 1 six-pack Cola = 6 cans Cola

Collection Terms 1 trio = 3 singers 1 six-pack Cola = 6 cans Cola drink 1 dozen donuts = 12 donuts 1 gross of pencils = 144 pencils 2

A Moles of Particles Contains 6. 02 x 1023 particles 1 mole C =

A Moles of Particles Contains 6. 02 x 1023 particles 1 mole C = 6. 02 x 1023 C atoms 1 mole H 2 O = 6. 02 x 1023 H 2 O molecules 1 mole Na. Cl = 6. 02 x 1023 Na+ ions and 6. 02 x 1023 Cl– ions 3

Examples of Moles of elements 1 mole Mg = 6. 02 x 1023 Mg

Examples of Moles of elements 1 mole Mg = 6. 02 x 1023 Mg atoms 1 mole Au = 6. 02 x 1023 Au atoms Moles of compounds 1 mole NH 3 = 6. 02 x 1023 NH 3 molecules 1 mole C 9 H 8 O 4 = 6. 02 x 1023 aspirin molecules 4

Avogadro’s Number 6. 02 x 1023 particles 1 mole or 1 mole 6. 02

Avogadro’s Number 6. 02 x 1023 particles 1 mole or 1 mole 6. 02 x 1023 particles 5

Learning Check Suppose we invented a new collection unit called a mep. One mep

Learning Check Suppose we invented a new collection unit called a mep. One mep contains 8 objects. A. How many paper clips in 1 mep? 1) 1 2) 4 3) 8 B. How many oranges in 2. 0 meps? 1) 4 2) 8 3) 16 C. How many meps contain 40 gummy bears? 1) 5 2) 10 3) 20 6

Solution Suppose we invented a new collection unit called a mep. One mep contains

Solution Suppose we invented a new collection unit called a mep. One mep contains 8 objects. A. How many paper clips in 1 mep? 3) 8 B. How many oranges in 2. 0 meps? 3) 16 C. How many meps contain 40 gummy bears? 1) 5 7

Molar Mass n Number of grams in 1 mole n Equal to the numerical

Molar Mass n Number of grams in 1 mole n Equal to the numerical value of the atomic mass 1 mole of C atoms = 12. 0 g 1 mole of Mg atoms = 24. 3 g 1 mole of Cu atoms = 63. 5 g 8

Learning Check Give the molar mass to 0. 1 g A. 1 mole of

Learning Check Give the molar mass to 0. 1 g A. 1 mole of Br atoms = ____ B. 1 mole of Sn atoms = ____ 9

Solution Give the molar mass to 0. 1 g A. 1 mole of Br

Solution Give the molar mass to 0. 1 g A. 1 mole of Br atoms = 79. 9 g/mole B. 1 mole of Sn atoms = 118. 7 g/mole 10

Molar Mass of Compounds Mass in grams of 1 mole equal numerically to the

Molar Mass of Compounds Mass in grams of 1 mole equal numerically to the sum of the atomic masses 1 mole of Ca. Cl 2 = 111. 1 g/mole 1 mole Ca x 40. 1 g/mole + 2 moles Cl x 35. 5 g/mole 1 mole of N 2 O 4 = 92. 0 g/mole 2 moles N x 14. 0 g/mole + 4 moles O x 16. 0 g/mole 11

Learning Check A. 1 mole of K 2 O = ______g B. 1 mole

Learning Check A. 1 mole of K 2 O = ______g B. 1 mole of antacid Al(OH)3 = ______g 12

Solution A. 1 mole of K 2 O = 94. 2 g 2 K

Solution A. 1 mole of K 2 O = 94. 2 g 2 K x 39. 1 g/mole + 1 O x 16. 0 g/mole B. 1 mole of antacid Al(OH)3 = 78. 0 g 1 Al x 27. 0 g/mole + 3 O x 16. 0 g/mole + 3 x 1. 0 13

Learning Check Prozac, C 17 H 18 F 3 NO, is a widely used

Learning Check Prozac, C 17 H 18 F 3 NO, is a widely used antidepressant that inhibits the uptake of serotonin by the brain. It has a molar mass of 1) 40. 0 g/mole 2) 262 g/mole 3) 309 g/mole 14

Solution Prozac, C 17 H 18 F 3 NO, is a widely used antidepressant

Solution Prozac, C 17 H 18 F 3 NO, is a widely used antidepressant that inhibits the uptake of serotonin by the brain. It has a molar mass of 3) 309 g/mole 17 C (12. 0) + 18 H (1. 0) + 3 F (19. 0) + 1 N (14. 0) + 1 O (16. 0) 15

Molar Mass Factors Methane CH 4 known as natural gas is used in gas

Molar Mass Factors Methane CH 4 known as natural gas is used in gas cook tops and gas heaters. Express the molar mass of methane in the form of conversion factors. Molar mass of CH 4 = 16. 0 g CH 4 1 mole CH 4 and 16. 0 g 1 mole CH 4 16. 0 g CH 4 16

Learning Check Acetic acid CH 3 COOH is the acid in vinegar. It has

Learning Check Acetic acid CH 3 COOH is the acid in vinegar. It has a molar mass of 60. 0 g/mole. 1 mole of acetic acid = 1 mole acetic acid g acetic acid or ______ g acetic acid 1 mole acetic acid 17

Solution Acetic acid CH 3 COOH is the acid in vinegar. It has a

Solution Acetic acid CH 3 COOH is the acid in vinegar. It has a molar mass of 60. 0 g/mole. 1 mole of acetic acid = 1 mole acetic acid 60. 0 g acetic acid or 60. 0 g acetic acid 1 mole acetic acid 18

Calculations with Molar Mass molar mass Grams Moles 19

Calculations with Molar Mass molar mass Grams Moles 19

Moles and Grams Aluminum is often used for the structure of light-weight bicycle frames.

Moles and Grams Aluminum is often used for the structure of light-weight bicycle frames. How many grams of Al are in 3. 00 moles of Al? 3. 00 moles Al ? g Al 20

1. Molar mass of Al 1 mole Al = 27. 0 g Al 2.

1. Molar mass of Al 1 mole Al = 27. 0 g Al 2. Conversion factors for Al 27. 0 g Al 1 mol Al 3. Setup or 1 mol Al 27. 0 g Al 3. 00 moles Al Answer x 27. 0 g Al 1 mole Al = 81. 0 g Al 21

Learning Check The artificial sweetener aspartame (Nutri. Sweet) formula C 14 H 18 N

Learning Check The artificial sweetener aspartame (Nutri. Sweet) formula C 14 H 18 N 2 O 5 is used to sweeten diet foods, coffee and soft drinks. How many moles of aspartame are present in 225 g of aspartame? 22

Solution 1. Molar mass of Aspartame C 14 H 18 N 2 O 5

Solution 1. Molar mass of Aspartame C 14 H 18 N 2 O 5 (14 x 12. 0) + (18 x 1. 01) + (2 x 14. 0) + (5 x 16. 0) = 294 g/mole 2. Setup 225 g aspartame x 1 mole aspartame 294 g aspartame = 0. 765 mole aspartame 23

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