Thursday, May 7, 2009

How many moles of gold atoms are in a gold ring with a mass of 8.005 grams?

0.1433 moles


0.0406 moles


8.005 moles


1577 moles








And which contains the most molecules: 1 mole of water, 1 mole of glucose, or 1 mole sodium chloride?


1 mole of water


1 mole of glucose


1 mole of sodium chloride


This question cannot be answered without knowing the chemical formulas of water, glucose, and sodium chloride.


1 mole of water, 1 mole of glucose, and 1 mole of sodium chloride all contain the SAME number of molecules.

How many moles of gold atoms are in a gold ring with a mass of 8.005 grams?
atomic weight of gold = 197


-- http://en.wikipedia.org/wiki/Gold


1 mole of gold = 197 grams of gold


8.00500 / 197 = 0.0406 moles
Reply:0.0406 moles





they all contain the same amount,


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