Question: Problem 9 ( 7 points). The half-life for the 1st-order thermal decomposition of phosphine into phosphorus and hydrogen is 35.0s : PH3(g)41P4(g)+23H2(g) Calculate the time

Problem 9 ( 7 points). The half-life for the 1st-order thermal decomposition of phosphine into phosphorus and hydrogen is 35.0s : PH3(g)41P4(g)+23H2(g) Calculate the time required for 95.0 percent of phosphine to decompose. Enter your answer in the box provided with correct units and sig. figs

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