February 25, 2017

Homework Help: Chemistry

Posted by Sarah on Wednesday, October 24, 2007 at 10:21am.

I have a question here and I know what the answer is supposed to be, and I also know that I know how to do it but I can't for the life of me remember how...any help would be apprecaited. Thanks alot.

You are supplied with a soultion of mordant yellow that has a concentration of 3.3 x 10-5 M and a molecular weight of 358.3g/mol. In a 10ml volumetric flask, put 0.05g of alpha-cyclodextrin which has a molecular weight of 972.9g/mol and then fill to the mark with the mordant yellow solution. This gives a cyclodextrin/mordant yellow stock solution. What is the concentration of the cyclodextrin in the soultion, where the concentration of mordant yellow is still 3.3 x 10-5M?

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