'02x10 23 atoms' presentation slideshows

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Unit: Chemical Quantities

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Unit 7: Chemical Quantities

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Mole

Mole. The mass of a single atom is too small to measure on a balance. E.g. mass of a hydrogen atom = 1.673x10 -24 g An analytical balance can measure up to 4 decimals. To measure atoms in the real world we need a huge number of atoms. That huge # we define as a mole.

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