Hello folks , please help me , there is an equation when you use the base of the bar by the top of the bars dimensions and when you use this with something it will prove the is true gold or a fake bar , does anybody know this ?? It always comes out to the same number which i believe is the atomic number of Au , sorry its a bit vague , i know what iam trying to say but it wont translate to my fingers , i hope you get me and can help !!
2007-02-05 13:02:09 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
I think you are trying to check the density of the material to see if the material is gold.
To do this accurately, you have to accurately measure the volume. If the bar in question has a rectangular cross section and rectangular surface then it is fairly easy to get the volume by measuring height, width, and length and multiplying together to get the volume. If you measure in centimeter then the product of the three numbers will be in cm^3.
If the shape is other than perfectly rectangular (rounded edges, sloping sides, etc) then it is harder to measure the volume with just a ruler. The classic method is the one attributed to Archemides when he was supposedly trying to get the volume of a complex crown to see if it was gold. You fill a vessel completely full of water until it actuall pours over. Then you set up the container so that every drop of water that poors over is caught in a bowl or whatever. Then you gently put the object in the tank and let it sink. The amount of water that overflows will have exactly the same volume as the object. If the water is collected in a graduated cyliner or similar you will then have the volume of the object.
Once you have the volume of the object you then need the mass. If you divide the measured mass by the measured volume you get the measured density (in units like g/cm^3). If the density measured is the same as the known density for gold, there is a very high probability that the object is gold.
The measured density for gold is: 7.31 g/cm3
good luck
2007-02-05 13:16:15 · answer #1 · answered by enginerd 6 · 0⤊ 0⤋
babe if you got one then bring it to me and I will weigh it for you, but you better be a quick runner coz I will leg it with it lol.
2007-02-05 13:15:03 · answer #2 · answered by Anonymous · 0⤊ 0⤋
yea just dump it down the drain
2007-02-05 13:05:15 · answer #3 · answered by Anonymous · 0⤊ 0⤋
SEND THE GOLD BAR TO ME I,LL WEIGH IT AND SEND IT BACK TO YA............ HONEST
2007-02-05 16:21:50 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Aint sure if this is what your looking for
2007-02-05 13:08:59 · answer #5 · answered by Allan 2 · 0⤊ 0⤋