Problem 4.15 Which of the foliowing is (are) possible Newman projections for 2-methylpentane? H CH3 CH CH3, CH2CH2CH3 H. CH2CH3 CH 2-methylpentane H. CH3 H. CH3CH H. B

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Which of the following is (are) possible Newman projectons for 2-methylpentane?

**Problem 4.15:**

Which of the following is (are) possible Newman projections for 2-methylpentane?

**Structure of 2-methylpentane:**

![2-methylpentane structural formula]

**Newman Projections:**

- **Projection A:**

  - Front Carbon (circle center): 
    - CH₃ (methyl group) at the top.
    - H (hydrogen) on the left and right.

  - Back Carbon (circle perimeter):
    - CH₂CH₂CH₃ (propyl group) on top.
    - Two H (hydrogens) on left and right.

- **Projection B:**

  - Front Carbon (circle center):
    - CH₃ (methyl group) on top.
    - H (hydrogen) on the left.
    - H (hydrogen) on the right.

  - Back Carbon (circle perimeter):
    - CH₂CH₃ (ethyl group) on top.
    - Two H (hydrogens) on left and right.
  
- **Projection C:**

  - Front Carbon (circle center):
    - CH₃ (methyl group) on top.
    - H (hydrogen) on both the left and the right.

  - Back Carbon (circle perimeter):
    - CH₃CH₂ (ethyl group) on the left.
    - CH₃ (methyl group) on the right.
    - H (hydrogen) at the top.

Identify which projection(s) correctly represent a possible conformation for 2-methylpentane.
Transcribed Image Text:**Problem 4.15:** Which of the following is (are) possible Newman projections for 2-methylpentane? **Structure of 2-methylpentane:** ![2-methylpentane structural formula] **Newman Projections:** - **Projection A:** - Front Carbon (circle center): - CH₃ (methyl group) at the top. - H (hydrogen) on the left and right. - Back Carbon (circle perimeter): - CH₂CH₂CH₃ (propyl group) on top. - Two H (hydrogens) on left and right. - **Projection B:** - Front Carbon (circle center): - CH₃ (methyl group) on top. - H (hydrogen) on the left. - H (hydrogen) on the right. - Back Carbon (circle perimeter): - CH₂CH₃ (ethyl group) on top. - Two H (hydrogens) on left and right. - **Projection C:** - Front Carbon (circle center): - CH₃ (methyl group) on top. - H (hydrogen) on both the left and the right. - Back Carbon (circle perimeter): - CH₃CH₂ (ethyl group) on the left. - CH₃ (methyl group) on the right. - H (hydrogen) at the top. Identify which projection(s) correctly represent a possible conformation for 2-methylpentane.
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