Write molecular formulas for the two alkanes 1. CH3-CH2-Ch2-Ch2-Ch2-Ch2-CH3.) 2. CH3-CH2- CH2 -CH2 -CH2 -Ch2 -CH2- CH2 -CH3

Question

1. CH3-CH2-Ch2-Ch2-Ch2-Ch2-CH3
2. CH3-CH2- CH2 -CH2 -CH2 -Ch2 -CH2- CH2 -CH3

Answer 1

Hello, Elle,

Just group the same elements together and assign a subscript for the number of that element.

1. CH3-CH2-CH2-CH2-CH2-CH2-CH3 - I changed the original "Ch" to "CH."n I don't know any element "Ch."

Count the "C's" and "H's" I count 7 carbons and 16 hydrogens. The formula is C₇H₁₆ (heptane).

2. CH3-CH2- CH2 -CH2 -CH2 -CH2 -CH2- CH2 -CH3

C = 9

H = 20

C₉H₂₀ (nonane)