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Whelan Whelan
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Posts: 3158
7 years ago
A concentration-time study of the gas phase reaction 2 A3 → 3 A2 produced the data in the table below.

   Time (s)   [A3] (M)   [A2] (M)
   0   4.00 × 10-4   0
   10   2.00 × 10-4   3.00 × 10-4
   20   1.00 × 10-4   4.50 × 10-4
   30   5.00 × 10-5   ?

What is the concentration of A2 after 30 seconds?
A) 5.00 × 10-4 M
B) 5.25 × 10-4 M
C) 5.50 × 10-4 M
D) 6.00 × 10-4 M
Textbook 

Introductory Chemistry Essentials


Edition: 5th
Author:
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hbutler2hbutler2
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7 years ago
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wrote...
2 years ago Edited: 2 years ago, Plastic Bag
PLEASE HELP WITH THIS

A concentration-time study of the gas phase reaction 2 A3 → 3 A2 produced the data in the table below.

                 Time (s)          [A3] (M)         [A2] (M)

                       0               4.00 × 10–4              0

                      10              2.00 × 10–4       3.00 × 10–4

                      20              1.00 × 10–4       4.50 × 10–4

                      30              5.00 × 10–5               ?

What is the average rate of formation of A2 in the time interval 20-30 seconds?

a. 6.00 × 10–4 M/s

b. 5.25 × 10–5 M/s

c. 7.50 × 10–6 M/s

d. 6.00 × 10–6 M/s
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2 years ago
Here Slight Smile
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