(adsbygoogle = window.adsbygoogle || []).push({}); 1. You will prepare 40.0g of a NaCl solution that is 0.90% by mass. Calculate the mass of the NaCl that is needed.

2. I don't know the proper equations/steps to find the answer, this is really what I need help with.

3. I have not made an attempt yet as I don't know how to go about making an attempt. Hopefully somebody could point me in the right direction so I can figure this out.

Also I did do a search though I was unable to find anything that seemed to deal with my situation.

-Britt

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# Homework Help: 40.0g NaCl that is 90% by Mass, find Mass

**Physics Forums | Science Articles, Homework Help, Discussion**