How do I calculate the number of moles and mass of the positive ions present in ionic substances?
Help with this would be greatly appreciated:
(a) 4.00 g of ammonium iodide, NH4I
in grams and moles
If you could explain this with a formula, that would be great. I’m a little stupid, so clarity would be great too.
well, it looks like you only have one mole of this substance, so that means that you only have one mole on NH4 (the positve ionic compound), which in turn means that you have one mole of nitrogen, but four moles of hydrogen, since it is NH4. now to get the mass all you have to do is multiply the number of moles by the molar mass of each element, which can be found on the periodic table of elements. for example, the molar mas of H is 1.008 grams. now multiply that by 4 moles, and there you have your mass. now do that same for nitrogen.
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Tags: bonding, chemistry, ionic, ionic ions, ionic ionski, ions, ions and ionic compounds, science