Complete the molecular formulas for alkenes given the pattern CnH2n for n=2, 3, 4, 5.

Question

ScanSolve AI Tutor · Accepted Answer

Here are the completed molecular formulas based on the pattern shown:

Identify the general formula.
The pattern shown, such as $C_2H_{2 \times 2}$ leading to $C_2H_4$ , indicates the general formula for alkenes, which is $C_nH_{2n}$ .
Apply the general formula to complete the missing entries.
Using the formula $C_nH_{2n}$ :
- For $n=2$ : $C_2H_{2 \times 2} = C_2H_4$
- For $n=3$ : $C_3H_{2 \times 3} = C_3H_6$
- For $n=4$ : $C_4H_{2 \times 4} = C_4H_8$
- For $n=5$ : $C_5H_{2 \times 5} = C_5H_{10}$
The completed list is:
$\begin{align*} n=2: \quad & C_2H_{2 \times 2} = \boxed{\text{C}_2\text{H}_4} \\ n=3: \quad & C_3H_{2 \times 3} = \boxed{\text{C}_3\text{H}_6} \\ n=4: \quad & C_4H_{2 \times 4} = \boxed{\text{C}_4\text{H}_8} \\ n=5: \quad & C_5H_{2 \times 5} = \boxed{\text{C}_5\text{H}_{10}} \end{align*}$

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