21. 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)04080120160 moles of A0.1400.0720.0420.0330.020 (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 mol/s ______mol/s

Given Time (s) Moles of A 0 0.140 40 0.072 80 0.042 120 0.033 160 0.020

Answered: 1. A flask is charged with 0.140 mol of…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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21. 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)	0	40	80	120	160

moles of A	0.140	0.072	0.042	0.033	0.020

(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 mol/s
______mol/s