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March 28, 2015

Homework Help: chem please help

Posted by Tanya on Sunday, September 16, 2007 at 9:15pm.

how would you make a 4% percent paraformaldehyde solution?


Work:
starting from 20% (diluted with PBS)
V1C1=V2C2
(100)(20)=(x)(4)
x=500
so add
496 ml of PBS (accounting for 4% paraformaldehyde) or would you add 500ml of PBS

Thank you

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