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A flask is charged with .100 mol of A and allowed to react to form B according to the hypothetical gas-phase reaction A-->B. The following data are collected
time: 0 40 80 120 160
mols of A: .100 .067 .045 .030 .020

a.) calculate the number of moles of B at each time in the table.
b.) calculate the average rate of disappearance of A for each 40-s interval, in units of mol/s.
c.) what additional information would be needed to calculate the rate in units of concentration per time?

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