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January 30, 2015

January 30, 2015

Posted by **John** on Sunday, January 6, 2013 at 2:27pm.

- Chemistry -
**bobpursley**, Sunday, January 6, 2013 at 2:48pmestimate: that is over 2 half lives, guessing 20 percent. The math

amountremaining=original*e^(-ln2*15/6.42)

decimal percent=e^(-ln2*15/6.42)=.199

or 19.9 percent

- Chemistry -
**John**, Sunday, January 6, 2013 at 5:47pmThanks

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