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. The following data are collected. (a) Calculate the number of moles of B at each time in the table. Os 40 S 80 s 120 s 160 S 0-40 s 40-80 s 80 120 s mol 120 160 mol/s mol (b) Calculate the average rate of disappearance of A for each 40 s interval, in units of mol/s. mol mol mol mol/s mol/s mol/s mol/s times (s) moles of A 0 A(g) → B(g) 0.140 40 80 0.068 0.043 120 0.029 160 0.016

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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:

\[ A(g) \rightarrow B(g) \]

The following data are collected:

\[
\begin{array}{|c|c|c|c|c|c|}
\hline
\text{time (s)} & 0 & 40 & 80 & 120 & 160 \\ \hline
\text{moles of A} & 0.140 & 0.068 & 0.043 & 0.029 & 0.016 \\ \hline
\end{array}
\]

(a) Calculate the number of moles of B at each time in the table.

- 0 s: \_\_\_\_ mol
- 40 s: \_\_\_\_ mol
- 80 s: \_\_\_\_ mol
- 120 s: \_\_\_\_ mol
- 160 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/s
- 40 - 80 s: \_\_\_\_ mol/s
- 80 - 120 s: \_\_\_\_ mol/s
- 120 - 160 s: \_\_\_\_ mol/s
Transcribed Image Text: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: \[ A(g) \rightarrow B(g) \] The following data are collected: \[ \begin{array}{|c|c|c|c|c|c|} \hline \text{time (s)} & 0 & 40 & 80 & 120 & 160 \\ \hline \text{moles of A} & 0.140 & 0.068 & 0.043 & 0.029 & 0.016 \\ \hline \end{array} \] (a) Calculate the number of moles of B at each time in the table. - 0 s: \_\_\_\_ mol - 40 s: \_\_\_\_ mol - 80 s: \_\_\_\_ mol - 120 s: \_\_\_\_ mol - 160 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/s - 40 - 80 s: \_\_\_\_ mol/s - 80 - 120 s: \_\_\_\_ mol/s - 120 - 160 s: \_\_\_\_ mol/s
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