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  1. ... purest you can get in jewelry is 24 karat, which is about 99.7% of pure gold . Gold can also be mixed with other metals to change its...

    分類:科學及數學 > 化學 2009年11月26日

  2. ...dense, soft, shiny and the most malleable and ductile of the known metals. Pure gold has a bright yellow color traditionally considered attractive. Medium...

  3. ...dense, soft, shiny and the most malleable and ductile of the known metals. Pure gold has a bright yellow color traditionally considered attractive. Gold ...

    分類:科學及數學 > 化學 2008年02月02日

  4. ...and so on, the 24K gold gold content 99.998%, basically regards as the pure gold , the 22K gold content is 91.665%. The gold quality also may straight...

    分類:科學及數學 > 化學 2008年06月24日

  5. The gold content of 18K necklace of 24g= 24g x 18/24 = 18g The gold content of 14K necklace of 30.6g = 30.6g x 14/24 = 17.85g Therefore, 18K necklace of 24g contains more gold .

    分類:科學及數學 > 數學 2006年10月31日

  6. 首先你要知18k金的黃金成份係佔成條頸鍊的18/(18+6)=3/4 而 14K 金的黃金成份係佔成條頸鍊的14/(18+6)=7/12 咁就計佢地黃金的重量: a 18K golden necklace of 24g有黃金: 24x3/4=18g 而a 14K golden necklace of 30.6 g有黃金: 30.6x7/12=17.85g so a 18K golden necklace of 24g的黃金成份比a...

  7. ...historical measurement of gold , a fine ounce is a troy ounce of 99.5% (".995") pure gold a standard ounce is a troy ounce of 22 carat gold , 91.66% pure (11 "fine...

  8. 24k gold is existed. It is an alloy with more than 99.7% pure gold . Other compoents are silver, copper, zinc with a very little proportion

    分類:科學及數學 > 化學 2010年01月16日

  9. 足金和千足金的英文是没有分別的﹕ 都係 Pure gold

    分類:社會及文化 > 語言 2007年10月29日

  10. ... asked by Hiero II to determine whether a crown was pure gold or was alloyed with silver. Archimedes was ...

    分類:文學及人文學 > 歷史 2007年10月26日