Question: how many carbons are in the longest chain
Answer: ane ; propyl hydride n - butane butyl hydride ; methylethyl methane 5 n - pentane amyl hydride ; Skellysolve A 6 5 5 n - hexane dipropyl ; Gettysolve - B ; hexyl hydride ; Skellysolve B 7 9 11 n - heptane dipropyl methane ; Gettysolve - C ; heptyl hydride ; Skellysolve C 8 18 24 n - octane dibutyl ; octyl hydride 9 35 55 n - nonane nonyl hydride ; Shellsol 140 10 75 136 n - decane decyl hydride 11 159 345 n - undecane hendecane 12 355 900 n - dodecane adakane 12 ; bihexyl ; dihexyl ; duodecane 13 802 7003241200000000000 ♠ 2412 n - tridecane 14 7003185800000000000 ♠ 1858 7003656300000000000 ♠ 6563 n - tetradecane 15 7003434700000000000 ♠ 4347 7004181270000000000 ♠ 18 127 n - pentadecane 16 7004103590000000000 ♠ 10 359 7004506990000000000 ♠ 50 699 n - hexadecane cetane 17 7004248940000000000 ♠ 24 894 7005143255000000000 ♠ 143 255 n - heptadecane 18 7004605230000000000 ♠ 60 523 7005408429000000000 ♠ 408 429 n - octadecane 19 7005148284000000000 ♠ 148 284 7006117377000000000 ♠ 1173770 n - nonadecane 20 70053663190000