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- anonymous

Making the simplistic assumption that the dissolved NaCl(s) does not affect the volume of the solvent water, determine the constants m and b in the equation Molarity = mdensity + b that relates the NaCl molarity to the NaCl(aq) density. Take the density of water to be 1.00 g/mL and the molar mass of NaCl to be 58.5 g/mol.
I am having a very difficult time answering this question. There just doesn't seem to be enough information to determine the constants? Not sure what i can do.

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- katieb

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- aaronq

this is likely a linear equation right? y=mx+b
Do you know how to find the equation of a line?
so you need two points two molarities and the corresponding densities.

- anonymous

yes, we find rise/run. I'm just unsure in what relation do you use molar mass of NaCl 58.5 and the density of water 1.00 g/mL?

- aaronq

you need to molar mass to convert between molarity (in moles) and density (in mass)

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- aaronq

you need the*

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