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April 17, 2014

Homework Help: Chemistry

Posted by Korina on Tuesday, December 14, 2010 at 7:55pm.

A laboratory technician is required to prepare a quarter normal saline solution (0.22% w/v) from the stock normal saline solution.

1. What is the dilution factor required?

I have 4-fold dilution - is that correct?

2. Ise this dilution factor to calculate the volume of stock needed if one litre of the diluted solution is to be prepared.

I have 0.22 over (divided by) 0.91 = 0.2417582 - is that correct? And how do I then convert it into a fraction in its lowest form?

Thanks.

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