Question

match the chemical formula with the appropriate model.

methane (ch₄)

methanol (ch₃oh)

ethane (c₂h₆)

propane (c₃h₈)

Explanation:

each compound's structure:

Methane (\( \text{CH}_4 \))

• Has 1 carbon (black) and 4 hydrogens (white).
• Matches the model with 1 black sphere (C) and 4 white spheres (H).

Methanol (\( \text{CH}_3\text{OH} \))

• Has 1 carbon (C), 4 hydrogens (H), and 1 oxygen (O, red).
• Matches the model with 1 black (C), 4 white (H), and 1 red (O) sphere.

Ethane (\( \text{C}_2\text{H}_6 \))

• Has 2 carbons (C) and 6 hydrogens (H).
• Matches the model with 2 black (C) and 6 white (H) spheres.

Propane (\( \text{C}_3\text{H}_8 \))

• Has 3 carbons (C) and 8 hydrogens (H).
• Matches the model with 3 black (C) and 8 white (H) spheres.

Final Matches:

• Methane (\( \text{CH}_4 \)) → Model with 1 C, 4 H.
• Methanol (\( \text{CH}_3\text{OH} \)) → Model with 1 C, 4 H, 1 O (red).
• Ethane (\( \text{C}_2\text{H}_6 \)) → Model with 2 C, 6 H.
• Propane (\( \text{C}_3\text{H}_8 \)) → Model with 3 C, 8 H.

(Note: Visually, the models are ordered as: Propane (3 C), Methane (1 C), Ethane (2 C), Methanol (with O). So connect:

• Methane → Second model (1 C, 4 H).
• Methanol → Fourth model (red O).
• Ethane → Third model (2 C, 6 H).
• Propane → First model (3 C, 8 H).)

Answer:

each compound's structure:

Methane (\( \text{CH}_4 \))

• Has 1 carbon (black) and 4 hydrogens (white).
• Matches the model with 1 black sphere (C) and 4 white spheres (H).

Methanol (\( \text{CH}_3\text{OH} \))

• Has 1 carbon (C), 4 hydrogens (H), and 1 oxygen (O, red).
• Matches the model with 1 black (C), 4 white (H), and 1 red (O) sphere.

Ethane (\( \text{C}_2\text{H}_6 \))

• Has 2 carbons (C) and 6 hydrogens (H).
• Matches the model with 2 black (C) and 6 white (H) spheres.

Propane (\( \text{C}_3\text{H}_8 \))

• Has 3 carbons (C) and 8 hydrogens (H).
• Matches the model with 3 black (C) and 8 white (H) spheres.

Final Matches:

• Methane (\( \text{CH}_4 \)) → Model with 1 C, 4 H.
• Methanol (\( \text{CH}_3\text{OH} \)) → Model with 1 C, 4 H, 1 O (red).
• Ethane (\( \text{C}_2\text{H}_6 \)) → Model with 2 C, 6 H.
• Propane (\( \text{C}_3\text{H}_8 \)) → Model with 3 C, 8 H.

(Note: Visually, the models are ordered as: Propane (3 C), Methane (1 C), Ethane (2 C), Methanol (with O). So connect:

• Methane → Second model (1 C, 4 H).
• Methanol → Fourth model (red O).
• Ethane → Third model (2 C, 6 H).
• Propane → First model (3 C, 8 H).)