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15 May, 01:12

Isoflurane, shown here, is a common inhalation anesthetic. write its molecular formula and calculate its percent composition by mass

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  1. 15 May, 01:24
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    Molecular formula of Isoflurane is C ₃H₂ClF₅O.

    Now calculate the percent composition by mass, which means percent of each element in the compound.

    Mass of Isoflurane = 184.49 g/mol

    Mass of carbon in the compound = 3 x 12.011 = 36.033g

    Mass of hydrogen in the compound = 2 x 1.008 = 2.016g

    Mass of chlorine in the compound = 1 x 35.453 = 35.453 g

    Mass of fluorine in the compound = 5 x 18.998 = 94.99g

    Mass of Oxygen in the compound = 1 x 16 = 16 g

    Carbon’s percentage = Mass of carbon in the compound / mass of isoflurane x 100 = 36.033/184.49 x 100 = 19.53%

    Hydrogen’s Percentage = Mass of hydrogen in the compound/mass of isoflurane x 100 = 2.016/184.49 = 1.09%

    Chlorine’s percentage = Mass of chlorine in the compound/mass of isoflurane x 100 = 35.453/184.49 = 19.22%

    Flourine’s percentage = Mass of fluorine in the compound/mass of isoflurane x 100 = 94.99/184.49 x 100 = 51.49%

    Oxygen’s percentage = Mass of Oxygen in the compound/mass of isoflurane x 100 = 16/184.49 x 100 = 8.67%
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