Moles and Molecules. Formula Mass Sum of the average atomic masses of all the atoms represented in a...
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Transcript of Moles and Molecules. Formula Mass Sum of the average atomic masses of all the atoms represented in a...
![Page 1: Moles and Molecules. Formula Mass Sum of the average atomic masses of all the atoms represented in a formula Measured in amu What is the formula mass.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f145503460f94c29067/html5/thumbnails/1.jpg)
Moles and Molecules
![Page 2: Moles and Molecules. Formula Mass Sum of the average atomic masses of all the atoms represented in a formula Measured in amu What is the formula mass.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f145503460f94c29067/html5/thumbnails/2.jpg)
Formula Mass
• Sum of the average atomic masses of all the atoms represented in a formula
• Measured in amu
• What is the formula mass of KClO3?
![Page 3: Moles and Molecules. Formula Mass Sum of the average atomic masses of all the atoms represented in a formula Measured in amu What is the formula mass.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f145503460f94c29067/html5/thumbnails/3.jpg)
Molar Mass
• How many grams of a substance there are per mole of that substance
• Numerically equal to the formula mass
• Units are g/mole
• What is the molar mass of water?
![Page 4: Moles and Molecules. Formula Mass Sum of the average atomic masses of all the atoms represented in a formula Measured in amu What is the formula mass.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f145503460f94c29067/html5/thumbnails/4.jpg)
Mole Problems
• How many grams are in 2.8 mole of MgCl2?
• How many grams in 3.0 mole of NaCl?
• How many grams in .10 mole of carbon dioxide?
![Page 5: Moles and Molecules. Formula Mass Sum of the average atomic masses of all the atoms represented in a formula Measured in amu What is the formula mass.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f145503460f94c29067/html5/thumbnails/5.jpg)
Mole Problems
• How many moles in 125g of BeS?
• How many moles in 450 g of CaCO3?
• How many moles in 33.4 g of O2?
![Page 6: Moles and Molecules. Formula Mass Sum of the average atomic masses of all the atoms represented in a formula Measured in amu What is the formula mass.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f145503460f94c29067/html5/thumbnails/6.jpg)
Mole Problems
• How many molecules in .58 mole of CaCl2?
• How many molecules in 3.0 mole of water?
![Page 7: Moles and Molecules. Formula Mass Sum of the average atomic masses of all the atoms represented in a formula Measured in amu What is the formula mass.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f145503460f94c29067/html5/thumbnails/7.jpg)
Mole Problems
• How many moles is 1.35x1024 molecules of water?
• How many moles is 5.6x 1023 molecules of HCl?