Rate equations

Jan 2019
1
0
New Zealand
Hi, I need some help with the rate equation in the attachment. I can see that [A] is first order but when I try to calculate it comes up as a decimal. Any ideas?

thanks
 

Attachments

May 2015
24
0
Houston, TX
A is closer to 2nd order and B is 2nd order. Double concentration => 4x increase in rxn rate => 2nd order rxn.