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To: super7man
W (tungsten ) atomic weight 183.84-—Au (gold)-—— 196.97

That's a 5% difference. Should easily be able to detect by specific gravity test.

Not so, unfortunately. Atomic weight is not the same as density. Atomic weight is the weight of one mole , or 6.02 x 10**23 atoms, of a substance. Atomic weight says nothing about the volume occupied by one mole of a substance so you can't just weigh two bars of equal size and expect a 5% difference in weight if one is gold and the other tungsten.

56 posted on 09/25/2012 3:19:20 PM PDT by SeeSharp
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To: SeeSharp

Yes, indeed. Thanks.


69 posted on 09/25/2012 4:40:59 PM PDT by super7man
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To: SeeSharp

Au = 19320 kg/M*3
W = 19600 kg/M*3

Since W is more dense, this whole thing gets tough.

Go for the ultrasound solution.


71 posted on 09/25/2012 4:50:51 PM PDT by super7man
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