Why does decane have a higher boiling point than acetone

14.Why does octane have a higher boiling point than ethane, 126°C versus –89°C?A)Octane exhibits hydrogen bonding and ethane does not.B)Octane has a higher vapor pressure than ethane.C)Octane contains more double bonds than ethane.D)Octane has stronger London dispersion forces than ethane.E)At least two of the above are correct.ANS:DPTS:1DIF:EasyREF:22.1KEY:Chemistry | organic chemistry | alkane | physical propertiesMSC: Conceptual15.How many isomers of C3H8are there?

Explanation:

answer is: empirical formula is tl₂o. if we use 100 grams of compound, tha:

m(tl) = 96.2%  · 100 g ÷ 100%.

m(tl) = 96.2 g.

n(tl) = m(tl)  ÷ m(tl). n(tl) = 96.2 g  ÷ 204.4 g/mol.

n(tl) = 0.47 mol. m(o) = 3.77 g. n(o) = m(o)  ÷ m(o). n(o) = 3.77 g  ÷ 16 g/mol. n(ag) = 0.235 mol. n(tl) . n(o) = 0.47 mol : 0.235 mol /0.235. n(tl) . n(o) = 2 : 1.

m(tl₂o) = 204.4 g/mol  · 2 + 16 g/mol = 424.8 g/mol.

m(compound) = 456. 8 g/mol - 424.8 g/mol = 32 g/mol ( 2 oxygens); tl₂o₃.