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ok thanks a lot
thanks, i got my equations cleared up nowfinal question though, how much mL of a substance should/did you dilute in an amount of mL of water? what ratio would be close to an accurate testing?
i was wondering, how do you know the wavelength that you are measuring? i can see that i am measuring using the red side of the spectrum but how do i know what wavelength(in nm) it isany equations i could use?