Question

the table shows the chemical formulas for four substances. substance chemical formula 1 c₂h₆o 2 c₈h₁₈ 3 ch₃ch₂br 4 c₄h₁₀o which compounds have the same number of carbon atoms? substances 1 and 2 substances 2, 3, and 4 substances 2 and 3 only substances 1 and 3

Explanation:

Step1: Identify carbon - atom numbers in each substance

Substance 1: $\text{C}_2\text{H}_6\text{O}$ has 2 carbon atoms.
Substance 2: $\text{C}_8\text{H}_{18}$ has 8 carbon atoms.
Substance 3: $\text{CH}_3\text{CH}_2\text{Br}$ has 2 carbon atoms.
Substance 4: $\text{C}_4\text{H}_{10}\text{O}$ has 4 carbon atoms.

Step2: Compare carbon - atom numbers

Substances 1 and 3 both have 2 carbon atoms.

Answer:

Substances 1 and 3