a 1.912 g samplw of calcium chloride is decomposed and found to contain 0.690 g of Ca and 1.222 g of Cl. Calculate the mass percent composition of Ca in calcium chloride

36.09% is the mass percent composition of calcium in calcium chloride

Explanation:

Mass percent is defined as one hundred times the ratio between the mass of a compound (In this case, Calcium), and the total mass of the sample:

Mass Percent = Mass compound / Total mass of the sample × 100

Computing the values of the problem:

Mass Percent = 0.690g / 1.912g * 100

Mass percent =

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