Calculate what Mass of CO2 is produced when 34.6g of C8H18 is burned in the air
1 mole of C8H18 ---> 8 mols of CO2
mol mass of C8H18 = 2*12 + 18 = 42 g/mol
so
(34.6/42) mol of C8H18
so
8(34.6/42) mol of CO2
mol mass of CO2 = 12 + 2*16 = 44 g/mol
so in the end
44 * 8 (34.6/42) grams of CO2
To calculate the mass of CO2 produced when C8H18 is burned in the air, we need to use the balanced chemical equation for the combustion of octane (C8H18).
The balanced chemical equation for the combustion of octane is as follows:
C8H18 + 12.5O2 → 8CO2 + 9H2O
From the equation, we can see that for every 1 mole of C8H18 burned, 8 moles of CO2 is produced.
To calculate the mass of CO2 produced, we need to:
1. Determine the number of moles of C8H18.
- To do this, we divide the given mass of C8H18 by its molar mass.
- The molar mass of C8H18 can be calculated by multiplying the atomic mass of carbon (C) by 8 and the atomic mass of hydrogen (H) by 18, then adding them together.
2. Use the mole ratio between C8H18 and CO2 to determine the number of moles of CO2 produced.
- Multiply the number of moles of C8H18 by the mole ratio between C8H18 and CO2, which is 8.
3. Convert the number of moles of CO2 to grams.
- Multiply the number of moles of CO2 by the molar mass of CO2.
Let's calculate step by step:
1. Calculate the molar mass of C8H18:
- Molar mass of carbon (C) = 12.01 g/mol
- Molar mass of hydrogen (H) = 1.008 g/mol
- Molar mass of C8H18 = (12.01 g/mol × 8) + (1.008 g/mol × 18)
2. Determine the number of moles of C8H18:
- Moles of C8H18 = Mass of C8H18 / Molar mass of C8H18
3. Calculate the number of moles of CO2 produced:
- Moles of CO2 = Moles of C8H18 × 8
4. Convert the number of moles of CO2 to grams:
- Mass of CO2 = Moles of CO2 × Molar mass of CO2
By following these steps, you can calculate the mass of CO2 produced when 34.6g of C8H18 is burned in the air.