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chemistry

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1)At room temperature (20 degree C), milk turns sour in about 64 hours. In a refrigerator at 3 degree C, milk can be stored three times as long before it sours. How long should it take milk to sour at 40 degree C (activation energy =44kj/mol)?

2)At what temperature will the rate constant for the reaction H2(g)+I(g) -> 2HI(g) have the value 5.3¡¿10^−3 /Ms? (Assume k=5.4*10^-4/Ms at 599 and k=2.8*10^-2/Ms at 683 .)

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