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<p>[QUOTE=&quot;Kentucky, post: 1563016, member: 33176&quot;]Generally mass (or weight) is easy to measure with great accuracy.&nbsp; Just go to any college or university nearby (or even some high schools) and they will have balances that will weigh to the nearest ten-thousandith of a gram (X.XXXX g).&nbsp; The trick is to get the volume since (density = mass/volume) we are limited by the accuracy of the volume measurement, which is not usually very good.&nbsp; The specific gravity is not the same as density, but really, really close.&nbsp; the specific gravity of an object is the mass of the object divided by the mass of an equal volume of water at that temperature.&nbsp; If we take the density of water as 1 (or 1.0 or 1.00, etc.) they are the same.&nbsp; There is a way to do it by measuring the mass of the object suspended in water, but you have to have an accurate hanging balance to do that.[/QUOTE]</p><p><br /></p>

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