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What are the concentrations of hydroxide and hydronium ions in a solution with a ph of 10.2?
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Describe the interaction that occurs between two objects with the same electrical charge.
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Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.
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Mu Cephei is no longer considered a main sequnce star. This means it has run out of:
A:hydrogen
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