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Chapter 3- The Mole, Percent Composition, Empirical Formula and Molecular Formuta How to calculate percent composition? 1. Calculate the percentage of carbon, hydrogen, and oxygen (by mass) in CraHazO 12x 12.0=14.13 aa x1.0O0793D2angramslmau Ti x 15.999=175 99grams Imou C12 H22O 13 car bor nydrospn Deygen grams/mole H4.13 x1042.1% उप2,24 342.29gramsImole 22.17 x100:65 342.24 10D = 514% 79.99 How to convert from grams to moles to number of substance? 342 27 Use molar- Use Avogadro's Formula units number Grams Moles mass How many sodium atoms are in 100.0 g of sodium atoms? 2. Möle=IMass molarmas =100.0gram 23g /mol=4.347 #of atoms (4.34)x (4.023 x1023) 2.43 x1024atam 3. The molecular formula for allicin, the compound responsible for the smell of garlic, is C6H10OS2. a) What is the molar mass of alliçin? mol Co Hilo OS2=116x12.0107710x1.00784+2x32.065+ 15.97 b) How many moles of allicin are present in 5.00 g of this substance? 5.00g 1162.27/6 gmol = 6.0 308 mo 162.27110 Gmol 0.0 300X6.02 1,854x18molkeanls 822x03 c) How many molecules of allicin are in 5.00 g of this substance? 22 d) How many sulfur atoms are in 5.00 g of this substance?

Chapter 3- The Mole, Percent Composition, Empirical Formula and Molecular Formuta How to calculate percent composition? 1. Calculate the percentage of carbon, hydrogen, and oxygen (by mass) in CraHazO 12x 12.0=14.13 aa x1.0O0793D2angramslmau Ti x 15.999=175 99grams Imou C12 H22O 13 car bor nydrospn Deygen grams/mole H4.13 x1042.1% उप2,24 342.29gramsImole 22.17 x100:65 342.24 10D = 514% 79.99 How to convert from grams to moles to number of substance? 342 27 Use molar- Use Avogadro's Formula units number Grams Moles mass How many sodium atoms are in 100.0 g of sodium atoms? 2. Möle=IMass molarmas =100.0gram 23g /mol=4.347 #of atoms (4.34)x (4.023 x1023) 2.43 x1024atam 3. The molecular formula for allicin, the compound responsible for the smell of garlic, is C6H10OS2. a) What is the molar mass of alliçin? mol Co Hilo OS2=116x12.0107710x1.00784+2x32.065+ 15.97 b) How many moles of allicin are present in 5.00 g of this substance? 5.00g 1162.27/6 gmol = 6.0 308 mo 162.27110 Gmol 0.0 300X6.02 1,854x18molkeanls 822x03 c) How many molecules of allicin are in 5.00 g of this substance? 22 d) How many sulfur atoms are in 5.00 g of this substance?

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Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter 3- The Mole, Percent Composition, Empirical Formula and Molecular Formuta How to calculate percent composition? 1. Calculate the percentage of carbon, hydrogen, and oxygen (by mass) in CraHazO 12x 12.0=14.13 aa x1.0O0793D2angramslmau Ti x 15.999=175 99grams Imou C12 H22O 13 car bor nydrospn Deygen grams/mole H4.13 x1042.1% उप2,24 342.29gramsImole 22.17 x100:65 342.24 10D = 514% 79.99 How to convert from grams to moles to number of substance? 342 27 Use molar- Use Avogadro's Formula units number Grams Moles mass How many sodium atoms are in 100.0 g of sodium atoms? 2. Möle=IMass molarmas =100.0gram 23g /mol=4.347 #of atoms (4.34)x (4.023 x1023) 2.43 x1024atam 3. The molecular formula for allicin, the compound responsible for the smell of garlic, is C6H10OS2. a) What is the molar mass of alliçin? mol Co Hilo OS2=116x12.0107710x1.00784+2x32.065+ 15.97 b) How many moles of allicin are present in 5.00 g of this substance? 5.00g 1162.27/6 gmol = 6.0 308 mo 162.27110 Gmol 0.0 300X6.02 1,854x18molkeanls 822x03 c) How many molecules of allicin are in 5.00 g of this substance? 22 d) How many sulfur atoms are in 5.00 g of this substance?
Transcribed Image Text:Chapter 3- The Mole, Percent Composition, Empirical Formula and Molecular Formuta How to calculate percent composition? 1. Calculate the percentage of carbon, hydrogen, and oxygen (by mass) in CraHazO 12x 12.0=14.13 aa x1.0O0793D2angramslmau Ti x 15.999=175 99grams Imou C12 H22O 13 car bor nydrospn Deygen grams/mole H4.13 x1042.1% उप2,24 342.29gramsImole 22.17 x100:65 342.24 10D = 514% 79.99 How to convert from grams to moles to number of substance? 342 27 Use molar- Use Avogadro's Formula units number Grams Moles mass How many sodium atoms are in 100.0 g of sodium atoms? 2. Möle=IMass molarmas =100.0gram 23g /mol=4.347 #of atoms (4.34)x (4.023 x1023) 2.43 x1024atam 3. The molecular formula for allicin, the compound responsible for the smell of garlic, is C6H10OS2. a) What is the molar mass of alliçin? mol Co Hilo OS2=116x12.0107710x1.00784+2x32.065+ 15.97 b) How many moles of allicin are present in 5.00 g of this substance? 5.00g 1162.27/6 gmol = 6.0 308 mo 162.27110 Gmol 0.0 300X6.02 1,854x18molkeanls 822x03 c) How many molecules of allicin are in 5.00 g of this substance? 22 d) How many sulfur atoms are in 5.00 g of this substance?
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