February 23, 2017

Homework Help: Chemistry

Posted by Joanna on Sunday, January 31, 2010 at 3:10am.

The rate constant for a certain reaction is = 4.30×10−3 s^-1. If the initial reactant concentration was 0.400 M , what will the concentration be after 19.0 minutes?

Rate would be first order therefore I used.

A=A initial*e^-kt

I keep getting .0030 M but supposely I am wrong can anyone help me or tell me what I am doing wrong?

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