Sure! Let's take an example involving carbon dioxide (CO₂) to illustrate mole-to-mass conversion.
Example: Convert moles of carbon dioxide to grams.
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Determine the amount of substance: Let's say we have 3 moles of CO₂.
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Find the molar mass of CO₂:
- Carbon (C) has an atomic mass of about 12.01 g/mol.
- Oxygen (O) has an atomic mass of about 16.00 g/mol, and there are 2 oxygen atoms in CO₂.
- Thus, the molar mass of CO₂ is calculated as follows: \[ \text{Molar mass of CO₂} = 12.01 , \text{g/mol} + (2 \times 16.00 , \text{g/mol}) = 12.01 , \text{g/mol} + 32.00 , \text{g/mol} = 44.01 , \text{g/mol} \]
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Convert moles to grams: Use the relationship: \[ \text{Mass (g)} = \text{moles} \times \text{molar mass (g/mol)} \] Applying this to our example: \[ \text{Mass of CO₂} = 3 , \text{moles} \times 44.01 , \text{g/mol} = 132.03 , \text{g} \]
So, 3 moles of CO₂ is equivalent to 132.03 grams.