The relative hydrogen vapor density of the cycloalkane is 28. Determine the formula for this cycloalkane.

general formula for cycloalkanes = CnH2n
M (cycloalkane) = 28 * 2 = 56 g \ mol
M (real) = M (general)
12n + 2n = 56
14n = 56
n = 4
The cycloalkane formula C4H8 is cyclobutane



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