sig. fig. for logs

[Zellmer, Robert]

For the BAR and CLK labs you needed to calculate ln[Allura Red] and ln(k).
I mentioned in class how to handle sig. fig. for logs.  The sig. fig. for
log(x) and ln(x) are tricky.  It's explained in a help file I have specifically
about logs and s.f. at my "Helpful Tidbit" link.  Sig. fig. for logarithms is
also explained in Appendix A of the textbook.

This is also very important for ch 16 and 17 since you have to take base
ten logs to get pH, pOH, etc. I mentioned this in lecture during our
discussion of pH and pOH.  We'll be dealing with logs again in chapters
19 and 20.  These pesky little things are popping up everywhere.

Manipulating Logs and Sig. Figs.<https://www.asc.ohio-state.edu/zellmer.1/chem1220/faq/sig_fig_logs.txt>

Dr. Zellmer
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