Avogadro’s number calculations

1. How many atoms are in 0.600 moles of Helium?

Correct! Wrong!

2. How many atoms are in 0.200 moles of Cl2?

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3. How many molecules are in 1.61 x10-3 moles of ethene?

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4. How many iron ions are in 0.500 moles of Fe2O3?

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5. How many molecules are present in 5.00 kg of O2?

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6. A sample of SO2 contains 5.00 x1023 molecules. How many moles are present in this sample?

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7. How many hydroxide ions are present in 10g of Barium hydroxide?

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8. What is the mass of one atom of nitrogen?

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9. What is the mass of 1 molecule of BF3?

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10. 1 molecule of Cl2. has a mass of 1.16 10-22. Which isotopes are present in this molecule?

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Avogadro's number calculations
Work through the examples above again
Good attempt
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