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The Mole Part 2. Mass – Particle Conversions. How many atoms of gold are in 25.0 g of gold?. Mass – Particle Conversions. How many grams of He are in 5.50 x 10 22 atoms of He?. Moles of Compounds. Freon has the formula CCl 2 F 2 This now gives us new conversion factors. Example.

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## The Mole Part 2

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**Mass – Particle Conversions**• How many atoms of gold are in 25.0 g of gold?**Mass – Particle Conversions**• How many grams of He are in 5.50 x 1022 atoms of He?**Moles of Compounds**• Freon has the formula CCl2F2 • This now gives us new conversion factors**Example**• How many moles of F are in 5.50 mol of CCl2F2?**Example**• How many moles of Al are in 1.25 mol of Al2O3?**Example**• How many Cl- ions are in 35.6 g of AlCl3? • How many Al +3 ions?

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