A20 in a ton of sea water contains about 50 billion

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Uploaded: 23.01.2014
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Product description


20. ton of sea water contains about 50 billion gold atoms. Assuming that 30 drops of water have a mass of 1 g, to calculate the mass of gold per 1 g of seawater.

Additional information

The objectives of the manuals "Chemistry. Guidelines, work program and control tasks, "ed. prof. VA Averyanov, Part 1, Tula, 2004.
Many problems have been successfully surrendered !!!
For any questions (explain answer additional questions of the teacher, etc.) can be treated as Seller is the direct executors of tasks.
Tasks performed in Microsoft Word, graphics - in Microsoft Exel or OriginPro; formula typed in MathType (if formulas are unreadable signs, then you must install the editor); files are archived WinRAR.

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