## 15.27 sig figs

$\frac{d[R]}{dt}=-k[R]; \ln [R]=-kt + \ln [R]_{0}; t_{\frac{1}{2}}=\frac{0.693}{k}$

sofiakavanaugh
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Joined: Thu Jul 13, 2017 3:00 am
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### 15.27 sig figs

Hi,

for question 27 I got the wrong number of sig figs for each one, i got 3 sig figs since the time has 3 sig fogs and therefore so did k, but in the solution manual it keeps using two?

Thanks

Vivian Nguyen
Posts: 66
Joined: Fri Sep 29, 2017 7:04 am
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### Re: 15.27 sig figs

Well, I'm not sure if this is much help, but for part b the answer has 2 sig figs, but you couldn't really write 3 sig figs, since the answer is simply 710.

As for part c and d it might have to do with logarithmic sig fig rules?