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Trying to calculate stock solutions! I have 5mg of a powder chemical substance that I need to dissolve in a solvent with a 2g/L solubility.

Trying to calculate stock solutions!

I have 5mg of a powder chemical substance that I need to dissolve in a solvent with a 2g/L solubility. I ultimately need to give two doses of the chemical: 10ug/L and 100 ug/L. My pipette has a limit of 5-10uL (cannot give more than this). I can create up to 3 stock dilutions. How can I solve this problem? Please show all work so I can learn! Thank you.

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