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02เธ เธ—เธ—เธตเน 2 เน€เธชเธตเธขเธ 1 เธง40104เธ เธต50 · R Á } nµ ´ª ° pµ = 8.31 J/mol.K M Á } ¤ª¨Ã¤Á¨
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