The key there is 100 mills. That means the bar is plated with a layer of gold that is 100 millionths of an inch think. Many sellers will use the term clad rather than played, however both mean the same thing. The value of the actual gold is around $0.02. However no gold company will touch these. It cost more to remove the gold plating than the value of the gold. So these bars are only worth their collectible value and have no actual previous metal value.
The answer to your question varies because the price of gold varies on a day-to-day basis.
The gold price is quoted in Troy Ounces. As of June 30 2010, the price is $1240. This is for Troy Ounce. There are 31.1035 grams in a Troy Ounce so to calculate for 1 gram you do this calculation.
1 gram of 24 karat gold = 1240 (Price In Troy Ounces) / 31.1035 grams = $39.86
Thus 100 grams of 24 karat gold = $39.86 * 100 = $3986
Note that this is for pure 24 karat gold such as Credit Suisse gold bars. (If it was 12 karat gold for example, it would only contain half a gram of actual gold and be worth only half as much).
£1000
the answer for 800 grams
There is 31.10348 Grams per troy oz 1 MILL is one millionth of a troy ounce So 31.10348(Grams per Troy Oz) X .000001 (one millionth of a Troy Oz) = 0.00003110348 of a Gram 1 MILL = 0.00003110348 Gram Today Gold is at $42.24 per gram So 0.00003110348 (of a Gram) X 42.24(price per Gram) = $0.0013138109952 So a 100 MILLs of gold is worth $0.0013138109952(price per MILL) X 100(MILLs) = ~ $0.13
current price of 2.5 grams gold is the zaka for 100 grmams gold. ;-)
100
Probably a 100 mills 1 Troy oz gold bar. 100 mills is just a gold plating.
24carat
100 grams of gold = about 3.22 troy ounces.
A ounce of gold is 968 us$, which makes 100g, roughly 3000$
100 mills layered Gold or Silver is only plating of 1.2 microns or more thick and has a low value on the open market.
$2300 on 09-Aug-2011
Gold has a molar mass of 196.96655 grams per mole. 100 grams then is equal to .508 moles which makes 3.059 E23 atoms of gold.