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<p>[QUOTE=&quot;Conder101, post: 668213, member: 66&quot;]Precisely, you use an acetone rinse to dry the water off the coin.&nbsp; Since the water is infinitely soluble in acetone the rinse dissolves and carries off almost all the water and the molecules of what remains are widely disbursed in the acetone and evaporate off along with the acetone in seconds.&nbsp; (Water tends to evaporate relatively slowly at room temperature because of the strong attractive forces between the molecules.&nbsp; Disbursing them in the acetone eliminates those attractions simply by increasing the distance between molecules and the water evaporates off as fast as the acetone does.)[/QUOTE]</p><p><br /></p>

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