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Chemistry tutorial-Ch20-2-Composition of petroleum

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Chemistry tutorial-Ch27-2-Structure and bonding of ice

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Chemistry tutorial-Ch7-1-Stability of noble gases

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Chemistry tutorial-Ch5-6-Relative isotopic mass

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Chemistry tutorial-Ch38-1-Molar volume

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Chemistry tutorial-Ch5-4-Atomic and mass numbers

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Chemistry tutorial-Ch20-10-Global warming

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Chemistry tutorial-Ch7-6-Formulae of ionic compounds

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Chemistry tutorial-Ch20-9-Acid rain

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