Calculate the number of moles of carbon
atoms present in 1.4 g of ethanol (C2H6O).
i get that you calculate the number of moles of ethanol whic i got was .03039 but how do you get the moles of CARBON from that.
To calculate the number of moles of carbon atoms present in 1.4 g of ethanol (C2H6O), we need to determine the molar mass of carbon and use it to convert the mass of ethanol to moles of carbon.
Here's how to do it step by step:
1. Determine the molar mass of carbon (C). The atomic mass of carbon is approximately 12.01 g/mol.
2. Calculate the molar mass of ethanol (C2H6O) by summing up the atomic masses of all its constituent atoms:
- 2 carbon atoms (C): 2 × 12.01 g/mol = 24.02 g/mol
- 6 hydrogen atoms (H): 6 × 1.01 g/mol = 6.06 g/mol
- 1 oxygen atom (O): 1 × 16.00 g/mol = 16.00 g/mol
Adding all the masses together: 24.02 + 6.06 + 16.00 = 46.08 g/mol
3. Determine the number of moles of ethanol (C2H6O) in 1.4 g by dividing the given mass by the molar mass of ethanol:
Number of moles of ethanol = 1.4 g ÷ 46.08 g/mol ≈ 0.03039 mol
4. Finally, to calculate the number of moles of carbon atoms, we use the mole ratio between carbon and ethanol. Since there are 2 moles of carbon atoms in 1 mole of ethanol (C2H6O), we can multiply the number of moles of ethanol by the mole ratio:
Number of moles of carbon = 0.03039 mol × 2 ≈ 0.06078 mol
Therefore, there are approximately 0.06078 moles of carbon atoms in 1.4 g of ethanol (C2H6O).
look at the formula. there are two carbons for each molecule of ethanol.
so moles of carbon: 2*.03 moles