A sample of C60O3 decomposes with an activation energy of 50 kg/mol, an Arrehnius pre-factor of 2e10 s-1 and a k value of .04 s-1. How long does it take for a 25 mg sample at 25 degrees C to produce 10 mg.

Question

A sample of C60O3 decomposes with an activation energy of 50 kg/mol, an Arrehnius pre-factor of 2e10 s-1 and a k value of .04 s-1.  How long does it take for a 25 mg sample at 25 degrees C to produce 10 mg.

DrBob222 · Answer

Is that C₆₀O3 or what? And I thought Arrhenius equation had to do with k1 and k2 at T1 and T2 and T1 and T2 are tempeataures, not time.

Anonymous · Answer

Yes the compound is C(sub 60)O(sub 3). Sorry, the Arrenhnius stuff was to solve part a to find the k value and I understood that so I just added what I found for k. I thought you are supposed to use the equation, concentration of A equals initial concentration of A times e^(-kt) but I wasn't sure if i could just use the mg as the concentrations or if I had to convert the mg to M.