What is the molar mass of carbon dioxide (CO₂)?

The molar mass of carbon dioxide (CO₂) is calculated by adding the molar masses of its constituent elements: carbon and oxygen.

Carbon (C) has a molar mass of approximately 12 g/mol. Since there is one carbon atom in CO₂, the total contribution from carbon is 12 g/mol.

Oxygen (O) has a molar mass of approximately 16 g/mol. In carbon dioxide, there are two oxygen atoms. Therefore, the total contribution from oxygen is 16 g/mol × 2 = 32 g/mol.

When you add the contributions from both carbon and oxygen, you get:

12 g/mol (from carbon) + 32 g/mol (from oxygen) = 44 g/mol.

Thus, the molar mass of carbon dioxide is 44 g/mol, which aligns with the correct answer. This calculation is important in stoichiometry and understanding gas behavior, as the molar mass is essential for converting between grams and moles in chemical reactions.