Math(Please answer just a quick question!!!!)
posted by Hannah .
If the time elapsed is 4.26 min, what is the value of the rate constant, k?
ln[R]t / [R]o = 0.0237
I am not sure how to slove this.
Would I do ln 4.26 minutes times 0.0237???

How are you defining k?
Are you taking the ln of [R] or of [R(t)]/R(0)] ?
Is [R] the concentration of a reactant?
This looks like an equation for firstorder chemical decomposition or radioactive decay.
If [R(t)] = [Ro]e^kt, then
ln{[R(t)]/R(0)]} = kt
If kt = 0.0237 when t = 4.26 min, then
k = 5.56*10^3 min^1 
Ok how did you get 5.56e3???