potassium ion and 10 mEq of sodium ion in 500 mL of D5W. Using a 20% w/v potassium chloride injection (MW 74.5, valence of 1) and 0.45% sodium chloride injection (MW 58.5, valence of 1), how many milliliters of each should be added to the 500mL bag of D5W to supply the required ions

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