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A 1.912-g sample of calcium chloride is decomposed into its constituent elements and found to contain...

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Chemistry

A 1.912-g sample of calcium chloride is decomposed into itsconstituent elements and found to contain 0.690 g Ca and 1.222 gCl. Calculate the mass percent composition of Ca and Cl in calciumchloride.

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4.1 Ratings (842 Votes)

mass of Ca = 0.68 g

mass of Cl=1.222 g

total mass = 1.912 g

mass percent of Ca = mass of Ca*100 / total mass

                                     = 0.69*100/1.912

                                     =36.09 %

mass percent of Cl =100 - mass percent of Ca

                                     = 100 - 36.09

                                      =63.91 %
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