No.

H₂

CH₄

C₂H₆

C₂H₄

C₂H₂

1

19.3

103

159

19

0.6

2

27

30

23

2.4

0.1

3

23

63

54

10

0.3

4

21

34

5

47

62

5

160

130

33

96

0.1

6

180

175

75

50

4

7

345

112.3

27.5

51.5

58.8

8

30.4

117

44.2

138

0.1