Chemistry

A chemist wants to extract the gold from 15.0g of gold(II) chloride dihydrate, AuCl3 x 2H20, What mass of gold could be obtained from this sample?

Also how would you find the molar mass of of 2H20 with the coefficient 2 in front?

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  1. http://www.jiskha.com/display.cgi?id=1302059899
    The coefficient of 2 means to multiply by 2; the molar mass of H2O is 18, the molar mass of 2H2O is 36.

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    posted by DrBob222

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