Unit 3 Sec. A Summary HW 3

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17) a. C₉H₂₀

b. C₁₀H₂₂

c. C₁₆H₃₄

d. C₁₈H₃₈

18) a. 128g

b. 142g

c. 226g

d. 254g

19) a. Propane C₃H₈

b. Pentane C₅H₁₂

20) Yes because all three molecules have the same number of elements and subscripts.

21)

 

22) Ethane

23) Molecules can be represented as both a linear chain or as a zigzag chain because the elements and subscripts are the same but just in a different pattern.