F Formula Mass

Sample Problem F Find the formula mass of potassium chlorate, KCIO,. 

The mass of a formula unit of KCIO3 is found by summing the masses of one K atom, one Cl atom, and three O atoms. The required atomic masses can be found in the periodic table in the back of the book, in the calculation, each atomic mass has been rounded to two decimal places. 

The molar mass of a compound is numerically equal to its formula mass. 

The molar mass of a compound is calculated by adding the masses of the elements present in a mole of the molecules or formula units that make up the compound. For example, one mole of water molecules contains exactly two moles of H atoms and one mole of O atoms. 

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Using molar mass derived from formula mass f (formula mass) g compound 6 1 mol compound... 

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