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450.3915

Calcium Carbonate (CaCO3) has a molar mass of 100.087 g/mol.

4.5 mol * 100.087 g/mol = 450.3915 (because the mol's cancel leaving you with grams)

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15y ago
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14y ago

Grams = Moles * Molar Mass

Moles = 2.50
Molar Mass of Calcium =40.1 (Can be found on Periodic Table = Atomic Mass)

2.50 * 40.1 = 100.25 grams of Calcium

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10y ago

1mol of Ca contains 6.02 x 1023 atoms (avogadro constant).

Therefore 2.5mol of Ca contains 2.5 x 6.02 x 1023 = 1.51 x 1024 atoms.

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Q: How many atoms are in a 2.5 mole sample of calcium?
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