What is Average Abundance means in copper and molybdenum?

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bienvinidou asked:


If copper is 0.17% and molybdenum is 398 ppm.

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This entry was posted on Monday, August 25th, 2008 at 10:25 pm and is filed under Chemistry. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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One Response to “What is Average Abundance means in copper and molybdenum?”

  1. Steve O Says:
    August 27th, 2008 at 2:16 am

    when they say that something is 0.17% copper…
    it tells you that something has 0.17 grams of copper in 100 grams of the mix. (they could have said it was 1.7 parts per thousand, or 1700 ppmillion… same ratio)

    if they are saying that something is 398 ppm molybdenum…
    it tells you that something has 398 grams of molybdenum in 1 million grams of the mix. (they could have said it was 0.0398 % molybdenum, it comes out the same abundance)

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