For Problem no. 19-20: A flask is charged with 0.124 mol of A and allowed to react to form B according to the reaction A(g) -B(g). The following data are obtained for [A] as the reaction proceeds: Time (s) Moles of A 0.124 0.110 0,088 0.073 0.054 0.00 100 200 300 400 The average rate of disappearance of A between 10 s and 20 s is mol's. O 22 x 10-3 O 1.1 x 10-3 O 4.4 x 10-3 9.9 x 10-3

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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For Problem no. 19-20:
A flask is charged with 0.124 mol of A and allowed to react to form B according to the reaction A(g) -B(g). The following data are obtained for [A] as
the reaction proceeds:
Time (s)
0.00
10.0
20.0
30.0
40.0
Moles of A
0.124 0.110 0.088 0.073 0.054
The average rate of disappearance of A between 10 s and 20 s is
mol's.
O 22 x 10-3
O 1.1 x 10-3
O 4.4 x 10-3
O 9.9 x 10-3
Transcribed Image Text:For Problem no. 19-20: A flask is charged with 0.124 mol of A and allowed to react to form B according to the reaction A(g) -B(g). The following data are obtained for [A] as the reaction proceeds: Time (s) 0.00 10.0 20.0 30.0 40.0 Moles of A 0.124 0.110 0.088 0.073 0.054 The average rate of disappearance of A between 10 s and 20 s is mol's. O 22 x 10-3 O 1.1 x 10-3 O 4.4 x 10-3 O 9.9 x 10-3
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