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Suppose we have 100 g of each of the following substances. Which sample contains the largest number of moles?
1. MgCO3, formula weight 84.3
2. AgCl, formula weight 143.3
3. Impossible to tell, unless we know what reaction will take place with the substance.
4. HCl, formula weight 36.5
5. H2 O, formula weight 18.0
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