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Be sure to answer all parts. The thermal decomposition of phosphine (PH3) into phosphorus and molecular hydrogen is a firstorder reaction: 4PH3(g)P4(g)+6H2(g) The half-life of

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Be sure to answer all parts. The thermal decomposition of phosphine (PH3) into phosphorus and molecular hydrogen is a firstorder reaction: 4PH3(g)P4(g)+6H2(g) The half-life of the reaction is 35.0s at 680C. Calculate the first-order rate constant for the reaction: s1 Calculate the time required for 92.0 percent of the phosphine to decompose: s

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