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A flask is charged with 0.140 mol of A and allowed to react to form B according to the following hypothetical gas-phase reaction.A(g)--> B(g)
The following data are collected.
Times(s) Moles of A0 0.14040 0.06480 0.050120 0.033160 0.019
(a) Calculate the number of moles of B at each time in the table.0 s=____ mol40 s=____ mol80 s=____ mol120 s=____ mol160 s=____ mol
(b) Calculate the average rate of disappearance of A for each 40-s interval, in units of mol/s.0 - 40 s= _____ mol/s40 - 80 s=_____ mol/s80 - 120 s=_____ mol/s120 - 160 s=_____ mol/s
(c) What additional information would be needed to calculate the rate in units of concentration per time?1. The mass of A must be known.2. The molar concentration of A would be sufficient.3. The volume of the container must be known.
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