Respuesta :

princessesther2011

Answer:

21,200g/mol

Explanation:

General formula of polyethylene molecule is (C2H4)n

n = 750

Therefore, Formula of polyethylene molecule is (C2H4)750 = C1500H3000

Molecular weight = (1500×12.1 + 3000×1)g/mol = 18,150 + 3,000 = 21,150 = 21,200g/mol (to three significant figures)

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