“We must trust to nothing but facts: These are presented to us by Nature, and cannot deceive. We ought, in every instance, to submit our reasoning to the test of experiment, and never to search for truth but by the natural road of experiment and observation.” ― Antoine Lavoisier, Elements of Chemistry


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Tuesday, 25 February 2014

tugas chem2 igcse2

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click to download  tugas_chem2_IGCSE2

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