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What is a mole the SI unit of?

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amount of substance

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What is the Avagadro Constant?

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the number of particles per mole

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What is absolute zero?

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the temperature at which the energy of the particles of a body is as low as it possibly can be

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What is a mole?

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The amount containing as many particles as there are in 12g of carbon-12

none

What is the 'relative molecular mass' of a molecule?

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mass of molecule in grams/(1/12 mass of c-12 atom)

none

What is the molar mass, M, of a gas?

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the mass per mole of the gas