moles, molar mass, & unit conversion - quia · 2020-04-08 · unit conversion with moles if we...
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![Page 1: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/1.jpg)
Moles, Molar Mass, & Unit Conversion
![Page 2: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/2.jpg)
How do they determine the # of pages in a ream?
Do they count? 500 sheets
Do they mass the paper? 20 lbs or 9.071847 Kg
Which would be more accurate?
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Overview
What is a Mole?
What is molar mass?
How is molar mass determined?
Unit conversion with molar mass.
![Page 4: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/4.jpg)
What is a mole?
A mole is a number which can refer to atoms, molecules, or particles.
One mole = 6.02 x 1023 particles = Avogadro’s #
In equations, we abbreviate it as “mol.”
![Page 5: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/5.jpg)
What is molar mass?
Molar mass is the mass of one mole of a substance.
e.g. 1 mol Li = 6.94 g Li
Practice:
What is the mass of one mole of Ni?
![Page 6: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/6.jpg)
How is molar mass determined?
Knowing the average mass of substances allows us to count by weighing.
How many pages in a ream?
10 sheets = ???
1 ream = ???
![Page 7: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/7.jpg)
What is molar mass?
Molar mass is the mass of one mole of a substance.
Practice:
What is the mass of one mole of Ni? 58.69 g Ni
![Page 8: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/8.jpg)
What is molar mass?
Molar mass is the mass of one mole of a substance.
Practice:
What is the mass of one mole (the molar mass) of SO2?
![Page 9: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/9.jpg)
What is molar mass?
Molar mass is the mass of one mole of a substance.
Practice:
What is the mass of one mole (the molar mass) of SO2? 32.07 g + 2x(16.00 g)=64.07 g SO2
![Page 10: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/10.jpg)
What is molar mass?
Molar mass is the mass of one mole of a substance.
Practice:
What is the molar mass of Cu3(BO3)2?
![Page 11: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/11.jpg)
What is molar mass?
Molar mass is the mass of one mole of a substance.
Practice:
What is the molar mass of Cu3(BO3)2?
3x(63.55 g)+2x(10.81 g + 3x(16.00 g)) = 190.65 g + 117.62 g = 308.27 g
![Page 12: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/12.jpg)
Molar Mass Practice
Find the molar mass of NaBr.
Find the molar mass of (NH4)2CO3.
Find the molar mass of C6H12O6.
![Page 13: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/13.jpg)
Molar Mass Practice
Find the molar mass of NaBr. 102.9 g/mol
Find the molar mass of (NH4)2CO3. 96.0 g/mol
Find the molar mass of C6H12O6. 180.0 g/mol
![Page 14: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/14.jpg)
Unit Conversion with Moles
If we are given the # of moles, we can determine the number of grams.
1. Determine the molar mass.
2. Calculate the other apex.
g
mol g/mol
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Unit Conversion with Moles
Practice: 16.04 g CH4 = ? mol CH4
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Unit Conversion with Moles
Practice: 16.04 g CH4 = ? mol CH4
1 mol CH4 = 12.01 g + 4x1.008 g = 16.042 g CH4
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Unit Conversion with Moles
Practice: 16.04 g CH4 = ? mol CH4
1 mol CH4 = 12.01 g + 4x1.008 g = 16.042 g CH4
16.04 g CH4 x (1 mol CH4 /16.042 g CH4 )
![Page 18: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/18.jpg)
Unit Conversion with Moles
Practice: 2 mol Fe2O3 = ? g Fe2O3
![Page 19: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/19.jpg)
Unit Conversion with Moles
Practice: 2 mol Fe2O3 = ? g Fe2O3
? g /mol Fe2O3 = 2x(55.85) + 3x(16.00)
= 111.7 + 48
= 159.7 g /mol Fe2O3
![Page 20: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/20.jpg)
Unit Conversion with Moles
Practice: 2 mol Fe2O3 = ? g Fe2O3
? g /mol Fe2O3 = 159.7 g /mol Fe2O3
2 mol Fe2O3 x 159.7 g /mol Fe2O3 = 319.4 g Fe2O3
![Page 21: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/21.jpg)
Unit Conversion Practice
How many moles are in 25.0 g of water?
![Page 22: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/22.jpg)
Unit Conversion Practice
How many moles are in 25.0 g of water? 1.39 mol H2O
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Unit Conversion Practice
How many grams are in 4.5 moles Li2O?
![Page 24: Moles, Molar Mass, & Unit Conversion - Quia · 2020-04-08 · Unit Conversion with Moles If we are given the # of moles, we can determine the number of grams. 1. Determine the molar](https://reader030.vdocuments.us/reader030/viewer/2022040616/5f11632133a9a5236f6a5b74/html5/thumbnails/24.jpg)
Unit Conversion Practice
How many grams are in 4.5 moles Li2O? 134.1 g Li2O
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Homework
Review the section on molar mass (pgs. 130-136).
Do “Mole Practice”