The decomposition of phosphine, a very toxic gas, forms phosphorus and hydrogen in the following reaction: 4PH3(g) -> P4(g)+ 6H2(g) (a) Express the rate of the reaction with respect to each of the reactants and products. (b) if the instantaneous rate of the reaction with respect to PH3 is 0.34 M•S^-1 ,what is the instantaneous rate of the reaction?

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