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Is there a particular number of sig figs that we should be using when looking at the periodic table? For example, should we use 16.00 or 15.999 as the atomic mass of oxygen? I know that the difference is slight but I'm just wondering.
During the lecture today, Professor Lavelle stated that for computing and converting to moles or grams, just use the significant figures for the molar masses provided to you by the given periodic table. At the end of the problem, proceed to include the necessary significant figures. Basically, this all depends on the significant figures given by the periodic table at hand.
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