The molar mass of carbon dioxide (CO2) is calculated by summing the atomic masses of each element in the compound, taking into account the number of atoms of each element present.
Here's a step-by-step breakdown:
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Identify the elements and their quantities: Carbon dioxide consists of one carbon atom (C) and two oxygen atoms (O).
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Find the atomic masses: Look up the atomic masses of carbon and oxygen on the periodic table.
- Carbon (C): Approximately 12.01 g/mol
- Oxygen (O): Approximately 16.00 g/mol
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Multiply the atomic mass by the quantity of each element:
- Carbon: 1 atom * 12.01 g/mol = 12.01 g/mol
- Oxygen: 2 atoms * 16.00 g/mol = 32.00 g/mol
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Add the results together:
- Molar mass of CO2 = 12.01 g/mol + 32.00 g/mol = 44.01 g/mol
Therefore, the molar mass of carbon dioxide (CO2) is approximately 44.01 g/mol. In many cases, rounding to 44 g/mol is acceptable.
