Chemistry

Question Analysis
This question involves solubility of compounds in water. The main focus is on relating bonding type and polarity to whether a substance is soluble or insoluble in water.

Key Concept Explanation
Ionic compounds are generally soluble in water because they interact strongly with water molecules.
Nonpolar covalent compounds are typically insoluble in water due to weak interactions with water molecules.

Step-by-step Solution
1. Identify the type of each compound:
O₂ → nonpolar covalent compound → insoluble
CH₄ → nonpolar covalent compound → soluble (tetrahedral molecular structure makes it nonpolar overall)
CO₂ → nonpolar covalent compound (linear structure, two C=O bonds are symmetrically arranged). CO₂ ...