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  2. What is the chemical symbol for potassium?

    What is the chemical symbol for potassium?

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  5. What is the chemical formula for hydrochloric acid?

    What is the chemical formula for hydrochloric acid?

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  8. Apollo 13 Views of the Moon in 4K

    Apollo 13 Views of the Moon in 4K

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  9. Check out these stunning fine art prints from Alain Bonnefoit's Suite 1980 collection.

    Check out these stunning fine art prints from Alain Bonnefoit's Suite 1980 collection.

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  14. Henri-Georges Clouzot presents a dynamic and creatively crafted cinematic portrayal of Picasso

    Henri-Georges Clouzot presents a dynamic and creatively crafted cinematic portrayal of Picasso

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  15. Which country is home to the Great Rift Valley?

    Which country is home to the Great Rift Valley?

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  18. Which country is known for its surfing beaches?

    Which country is known for its surfing beaches?

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  19. Which country is nicknamed "The Rainbow Nation"?

    Which country is nicknamed "The Rainbow Nation"?

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  22. Who discovered the theory of general relativity?

    Who discovered the theory of general relativity?

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