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?
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question3 part d
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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