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I'm working on a prelab titled: Analysis of Water for Dissolved Oxygen. The question is: Calculate...

I'm working on a prelab titled: Analysis of Water for Dissolved Oxygen. The question is: Calculate the concentration in mg/L (ppm) of a solution that is 4*10^-3M in O2, assuming a density of 1g/mL for the solution.

I'm not sure if I provided all of the information needed, seeing as how I don't entirely understand the question. Any help would be appreciated. Thank you.

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Answer #1

4*10^-3 M means 4*10^-3 moles per litre

now, mass = mole*molar mass

= 4*10^-3*32

= 0.128 grams/L

or 128mg /L

so, 128mg/L

any query please comment

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