The half-life method determines the order of the reaction A -> products. Two setups were investigated, both at the same temperatures but with different initial concentrations of A. In the first run, the starting concentration of A was 0.78 M, and the half-life was determined to be 45 minutes. The initial concentration of A in the second run was 1.32 M. a. If the reaction is 0th order, what is the concentration of A in the

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