PART B: Solve the problem below. Show your complete solution inside the box. Styrofoam is a polymer made from monomer styrene. Elemental analysis of styrene shows its percentage composition to be 92.26 % C and 7.75% H. Its molecular mass is found to be 104.15 g/mol. What are the empirical and molecular formulas of styrene?
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Answer:
Styrene has 92.26 % C, 7.74 % H and 1.41× 1022 molecules weigh 2.44 grams.
Explanation:
Clearly, n=8 , and the molecular formula is C8H8 . Of course this is reasonable inasmuch that we know that the styrene monomer is C6H5CH=CH2 , i.e. vinyl benzene.
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