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What is the concentration of caffeine in tea

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Reference no: EM132060680

A cup of 125 mL of reasonably strong Twinings English BreakfastTM tea has approximately 110 mg of caffeine. 

1. Expressed as parts per million, what is the concentration of caffeine in this tea? 

2. Seawater was measured to contain 3.90 x 10-3 ppb of dissolved gold. What volume of seawater will contain 1.00 g of gold?

Reference no: EM132060680

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