Determine what is the final concentration
63.0 mL of a 1.20 M solution is diluted to a total volume of 218 mL. A 109-mL portion of that solution is diluted by adding 139 mL of water. What is the final concentration?
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What weight of A would be removed by four successive extractions with 25-mL portions of ligroin? how much ligroin would be required to remove 98.5% of A in a single extraction?
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