Chemistry
What is the half-life of Rubidium-Strontium 87?
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What is the second-most abundant element in the universe, though it is much less common on Earth?
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What is the term for rain that contains chemical pollutants?
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What are the products of propanoic acid and ethanol when the two are combined with warm sulphuric acid?
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Who is considered the "father" of organic chemistry?
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What is essential for calcium absorption by the human body?
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What alkali metal is highly radioactive and decays into either astatine, radium, or radon?
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What is the total energy of particles in matter called?
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