The unit ppb (parts per billion) is used for extremely dilute concentrations and represents one gram of solute per 10^9 grams of solvent, or one microgram of solute per kilogram of solvent. Suppose that 3.5 grams of phenol red indicator (chemical formula: C19 H14 O5  S ) are placed in an Olympic-sized swimming pool to determine the pH. (a) If the pool measures 50.0 meters long by 25.0 meters wide with an average depth of 2.75 meters, calculate the concentration of the indicator in parts per bill
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