University:
Loyola University Maryland
Course:
BL 111 | Environmental Biology
Academic year:

2024
Views:

261

Pages:

2
Author:

Natasya J.

Mole Notes 1 Mole = 6.02 X 10^23 The Mole is conversion to count a substance by weighing it. 1 mole is equal to 6.02 x 10^23 representative particles of a substance. Depending on the substance the representative particles may be atoms, molecules, formula units. for an element: 1 mole = 6.02 x 10^23 atoms Ionic Compound: 1 mole = 6.02 x 10^23 formula units Covalent compound: 1 mole = 6.02 x 10^23 molecules Molar Mass The molar mass of a substance is the mass of one mole of that substance. To calculate the molar mass of a substance you must add the individual atomic mass of all the elements that make up the compound. The unit for a molar mass in grams/mole. Example: C6 H12 O6 Carbon (6 x 12 = 72) Hydrogen (12 x 1 = 12) Oxygen (6 x 16 = 96) 72 + 12 + 96 = 180 grams/mole Fe3 (PO4)2 Iron: 3 x 55.85 = 167.55 Phosphorus = 2 X 31 = 62 Oxygen = 8 X 16 = 128 167,35 + 62 + 128 = 357,55 grams (mole