you want to use information about each element to convert from one unit to the other. For questions (a) thru (f) you want to convert from grams to mols; simply take your number of grams and divide by each elements' atomic m from the periodic table; when you cancel out units, you should be left with moles...now for (g) and (h) you have a number of atoms which needs to be converted to moles using Avogadro's number; there are 6.02*10^23atoms in each mol of any substance, use this to convert
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