It depends on the weight of the starting gold. 18 karat is 75% pure gold, and therefore a 1 gram weight of 18 karat gold would have 0.75 grams of pure gold in the alloy.
9x+18y=200*14 x+y=200 y=200-x 9x+18(200-x)=2800 9x+3600-18x=2800 -9x=-800 x=88.9 grams y=111.1 grams x= 9 karat gold y=18 karat gold Answer: 88.9 grams of 9 karat gold must be mixed with 18 karat gold to produce 200 grams of 14 karat gold.
75 g of Gold, everything else are impurities
18 karat gold
Spot price of 1 troy ounce of gold on 10-05-2010 is currently US dollars $1340.00 per troy ounce. 18 karat gold is 75 percent gold, so take the TROY ounce weight for the 18 karat gold item times .75 to get the PURE 24 karat gold amount, then multiply that by 1340.1 troy ounce of 18 karat gold is worth $1005 dollars.1 troy ounce is equal to 31.1034768 grams, or 1.09714286 US ounces,(so you need MORE than one US ounce of pure 24 karat gold to get the spot price of a TROY ounce of gold!)Another AnswerYou can pick up 18 carrots at the local produce stand for less than two dollars US.
A carat is a unit of weight for precious stones, which is equivalent to 200 milligrams. In terms of precious stones, they are described in ¼ increments.In terms of gold, Karat (K) is the number of parts, by weight, of gold. The higher the percentage of pure gold, the higher the karat. For e.g., 14 karat gold is 58% gold, 18 karat gold is 75% gold and 24k gold is pure. Both gold and diamonds/emeralds/rubies/sapphires and some semi precious stones are measured in carats.
9x+18y=200*14 x+y=200 y=200-x 9x+18(200-x)=2800 9x+3600-18x=2800 -9x=-800 x=88.9 grams y=111.1 grams x= 9 karat gold y=18 karat gold Answer: 88.9 grams of 9 karat gold must be mixed with 18 karat gold to produce 200 grams of 14 karat gold.
There is no 18 Karat gold in an ounce of 24 Karat gold because 24 Karat gold is pure. 18 Karat gold is alloyed with another metal to make it wear longer. There are approx. 31.1 grams of 24 karat gold in a troy oz. A troy oz. is smaller than a regular oz. It would take more than 31.1 grams of 18 Karat gold to equal the pure gold content of 1 oz. of 24 Karat gold.
What purity of gold is it? (ex: 14 karat? 18 karat?)
45 Grams of 18 karat Gold = 1,827.679 USD
In gold, a karat is a measure of purity. 24 karat gold is pure gold, while 18 karat is 75% gold. For gems, a carat measures the mass of the gemstone. 1 carat is 0.2 grams.
8 ounce
Karat (K) is the number of parts, by weight, of gold. The higher the percentage of pure gold, the higher the karat. For e.g., 14 karat gold is 58% gold, 18 karat gold is 75% gold, 22k gold is 91.67% gold and 24k gold is pure.
75 g of Gold, everything else are impurities
the solvent of the 18 karat of gold is leche libag ulo,,i,,
10 karat is 41.67 % gold 14 karat is 58.33 % gold 18 karat is 75 % gold 24 karat is 100 % gold
18 karat gold
18 karat gold