Molar mass Study guides, Revision notes & Summaries
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Mole and Molar Mass exam with 100% Correct answers already graded A+
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Avogadro's Number 
The number of atoms in 12.01 grams of Carbon 
 
 
 
Numerical Value of Avogadro's Number 
6.02 × 10²³ parts 
 
 
 
Parts= Representative Particles 
1) Atoms 
2) Ions 
3) Formula Units 
4) Molecules 
 
 
 
Mole 
The SI unit of measure for an amount of a chemical substance 
 
 
 
Molar Mass 
The mass in grams of one mole of a substance 
 
 
 
What is the molar mass of Mg(NO₃)₂? 
148.33g/mol 
 
 
 
What is the mass of 1.33 moles of Titanium, Ti? 
63.7gTi 
 
 
 
What are ...
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Student Exploration: Moles GIZMO ( ALL ANSWERS CORRECT )
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Student Exploration: Moles 
Vocabulary: atomic mass, Avogadro constant, conversion factor, dimensional analysis, mole, 
molar mass, molecular mass, scientific notation, significant figures, unified atomic mass unit 
Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 
1. In the image to the right, note a dozen eggs, a dozen donuts and 
a dozen roses. How many of each item do you have? 
2. Would a dozen of each object have the same mass? 
3. Suppose you have a dozen carbon atoms, a dozen...
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Chemistry 2 - Molar Masses exam with 100% Correct answers already graded A+
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Which is the molar mass of H2O? 
18.02 g/mol 
 
 
 
What is the molar mass of CHCl3? 
119.37 g/mol 
 
 
 
Which best compares 1 mol of sodium chloride to 1 mol of aluminum chloride? 
Both are made up of 6.02 x 10^23 formula units. 
 
 
 
Which is the formula mass of (NH4)2SO4? 
132.17 amu 
 
 
 
What is the molar mass of a substance? 
the mass in grams of one mole of a substance 
 
 
 
How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen? ...
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Activity: Moles, Avogadro, and Molar Mass
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Activity: Moles, Avogadro, and Molar Mass
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Chapter 7 Moles and Molar Mass exam with 100% Correct answers already graded A+.
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Chapter 7 Moles and Molar Mass exam with 100% Correct answers already graded A+.
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Molar Mass exam with 100% Correct answers already graded A+
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Molar Mass exam with 100% Correct answers already graded A+
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Chemistry Test Molar Mass exam with 100% Correct answers already graded A+
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Chemistry Test Molar Mass exam with 100% Correct answers already graded A+
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LMR Molar Mass Review B 2022
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LMR Molar Mass Review B 2022 
 (show all work) 
 
 
 
 
1.FIND THE MOLAR MASS OF 
a)	Na2S 
 
 
 
Na	23.0	46.0 
S	32.1	32.1 
= 78.1 or 78 g 
b)	Li2SO4 
 
 
 
Li	6.94	13.88 
S	32.1	32.1 
O	16.0	64.0 
= 109.98 or 110.0 g 2.CALCULATE THE MOLAR MASS OF 
a)	ALUMINUM CHLORIDE Al3+ + Cl-1 = AlCl3 
 
Al	27.0	27.0 
Cl	35.5	106.5 
= 133.5 or 134 g
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The Dental Hygienists Guide to Nutritional Care 5th Edition by Cynthia A. Stegeman - Test Bank
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Chapter 03: The Alimentary Canal: Digestion and Absorption 
Stegeman: The Dental Hygienist’s Guide to Nutritional Care, 5th Edition 
 
MULTIPLE CHOICE 
 
	1.	Each is a portion of the alimentary canal, except one. Which is the exception? 
a. 
Oral cavity 
b. 
Pharynx 
c. 
Larynx 
d. 
Esophagus 
e. 
Small intestine 
 
 
ANS:	C 
The larynx is not a portion of the alimentary canal. This tubular structure is approximately 30-ft long and comprises all the body parts through which food passes. 
 
DIF...
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Molar Masses assignment and quiz exam with 100% Correct answers already graded A+
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Molar Masses assignment and quiz exam with 100% Correct answers already graded A+
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