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  2. What is the chemical formula for hydrobromic acid?

    What is the chemical formula for hydrobromic acid?

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  10. What is the chemical formula for nitrous acid?

    What is the chemical formula for nitrous acid?

    3
  16. What is the largest freshwater lake in Africa?

    What is the largest freshwater lake in Africa?

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  17. Which country is home to the Great Mosque of Djenné?

    Which country is home to the Great Mosque of Djenné?

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  18. What country is the world's largest producer of diamonds?

    What country is the world's largest producer of diamonds?

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  21. What mountain range runs along the coast of South Africa?

    What mountain range runs along the coast of South Africa?

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