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Unformatted text preview: One mole of a substance is equal to 6.02 X 10 23 (Avogadro's number) particles of the substance. For example, one mole of glucose contains 6.02 X 10 23 molecules of glucose. One mole of a substance has a mass in grams that is equal to the sum of the mass number of each atom in one molecule of the substance. For example, if we sum the mass numbers of each of the atoms in one molecule of glucose (C 6 H 12 O 6 , carbon is 12, hydrogen is 1, and oxygen is 16) we get 72 + 12 + 96 = 180. One mole of glucose (6.02 X 10 23 molecules) has a mass of 180 grams. This is convenient for chemical calculations because one mole of any substance has 6.02 X 10 23 particles. The concentration of solutions can be measured as the number of moles of solute dissolved in one liter of solvent. This measurement is called the molarity of the solution....
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This note was uploaded on 12/15/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.
- Fall '10