May 29, 2016

Homework Help: Chemistry

Posted by Kevin on Monday, October 12, 2009 at 2:03am.

A student finds a medallion which could be made of pure platinium or silver. IN order to find out what the medallion is made of the student takes the medallion to a chemistry lab. The student measures the density of the medallion as follows. The medallion is placed on a balance and the mass is found to be 35.64g. The student places some water in a graduated cylinder and reads the volume as 65.5mL. Next, the medallion is dropped into the cylinder and the new volume reads 68.89mL. Is the Medallion platinum or Silver? (densities: platinum= 21.4g/mL Silver= 10.5g/mL

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