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How many grams are in an oz of gold?
About 31.1 grams.
8 grams.
How many ounces is 3.5 grams of gold?
37.5 grams
15.244 grams.
3dwt of gold is 4.67 grams.
1.55 Grams = 1 Pennyweight (dwt)
If you mean "How many grams are in 20kg of gold?" then the answer is 20000 (twenty thousand) grams make up 20kg of anything...gold, water, paper, anything.
There shouldn't be any copper in eight grams of gold! Unless it's a copper/gold alloy.
29.6220 grams is equal to 1.044885 ounces.