5) The following reaction is a first-order reaction. If the concentration is .256M after 485 seconds with k being .039/minute, what was the initial concentration? а. 4.2 x 107 M b. .80M с. .35M d. 30.6M

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first order reaction

5) The following reaction is a first-order reaction. If the concentration is .256M after 485
seconds with k being .039/minute, what was the initial concentration?
а.
4.2 x 107 M
b. .80M
с. .35M
d. 30.6M
Transcribed Image Text:5) The following reaction is a first-order reaction. If the concentration is .256M after 485 seconds with k being .039/minute, what was the initial concentration? а. 4.2 x 107 M b. .80M с. .35M d. 30.6M
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