Question: A chemist prepares a solution of potassium dichromate (K2Cr2O7) by measuring out 19.4 mmol of potassium dichromate into a 350 , mL volumetric flask and

A chemist prepares a solution of potassium dichromate (K2Cr2O7) by measuring out 19.4 mmol of potassium dichromate into a 350 , mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's potassium dichromate solution. Round your answer to 3 significant digits

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