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OpenStudy (anonymous):
3rd questions :/ HELP A 46 gram sample of a substance that's a by-product of fireworks has a k-value of 0.1374. Find the substance's half-line, in days. Round to the nearest tenth.
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OpenStudy (anonymous):
ok we get the picture now? go straight to the answer. it is \[-\ln(.5)\div0.1374\] use a caclulator
OpenStudy (anonymous):
natural log of one half divided by the natural log of k, get rid of the minus sign
OpenStudy (anonymous):
to the tenth it is 50.4 but you should check in case i give you the wrong answer
OpenStudy (anonymous):
50.4 is incorrect
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