molecular formula questions
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how to find molecular formula
Calculate the empirical formula mass. You determine this number by finding the mass of HO (1 hydrogen atom and 1 oxygen atom). ...Divide the gram molecular mass by the empirical formula mass. ...Multiply each of the subscripts within the empirical formula by the number calculated in Step 2.
following this step and surely you will get how to calculate your molecular formula
ok
but one problem how to find mole
Start with the number of grams of each element, given in the problem. Convert the mass of each element tomoles using the molar mass from the periodic table. Divide each mole value by the smallest number of molescalculated. Round to the nearest whole number.
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