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To: philv who wrote (64949)4/28/2009 1:11:45 AM
From: E. Charters  Respond to of 78416
 
The wooden ducky displaces its weight in water. So a 4 ounce wooden ducky ( a popular size for bathtub duckies) displaces 4 ounces of water. A silver ducky of the same weight would displace 4/10.49 = 0.381 ounces of water.

A 4 ounce ducky that was 90% silver and 10% copper would displace 0.387 ounces water. 170 milligrams difference from the ducky of the purest silver, or slightly less than the weight of one carob seed.

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