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  • 20-02-2024
  • Chemistry
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How many moles of gold (au) are in 7.8 ã— 1010 g of gold?
a) 7.8 × 10⁻¹⁰ moles
b) 3.955 × 10⁻¹² moles
c) 197 moles
d) 0.197 moles

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