look at the formula. there are two carbons for each molecule of ethanol.
so moles of carbon: 2*.03 moles
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.
so moles of carbon: 2*.03 moles
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 ร 12.01 g/mol = 24.02 g/mol
- 6 hydrogen atoms (H): 6 ร 1.01 g/mol = 6.06 g/mol
- 1 oxygen atom (O): 1 ร 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 รท 46.08 g/mol โ 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 ร 2 โ 0.06078 mol
Therefore, there are approximately 0.06078 moles of carbon atoms in 1.4 g of ethanol (C2H6O).