Final answer:
To determine the substance containing the most moles of carbon, we need to calculate the moles of carbon in each option. Option C, 71.016 grams of C2Cl6, contains the most moles of carbon with 0.846 mol.
Step-by-step explanation:
To determine which substance contains the most moles of carbon, we need to calculate the number of moles of carbon in each option. First, we have 23.9 grams of CO2.
We can use the molar mass of CO2 (44.01 g/mol) to convert the mass of CO2 to moles of CO2: 23.9 g CO2 * (1 mol CO2/44.01 g CO2) = 0.543 mol CO2.
Since one mole of CO2 contains one mole of carbon, we have 0.543 mol of carbon in option A.
Next, we have 9.4 grams of C3H4C. We can use the molar mass of C3H4C (76.1 g/mol) to convert the mass of C3H4C to moles of C3H4C: 9.4 g C3H4C * (1 mol C3H4C/76.1 g C3H4C) = 0.123 mol C3H4C.
Since one mole of C3H4C contains three moles of carbon, we have 0.123 mol C3H4C * 3 = 0.369 mol carbon in option B.
Finally, we have 71.016 grams of C2Cl6. We can use the molar mass of C2Cl6 (167.87 g/mol) to convert the mass of C2Cl6 to moles of C2Cl6: 71.016 g C2Cl6 * (1 mol C2Cl6/167.87 g C2Cl6) = 0.423 mol C2Cl6.
Since one mole of C2Cl6 contains two moles of carbon, we have 0.423 mol C2Cl6 * 2 = 0.846 mol carbon in option C.
Therefore, option C, 71.016 grams of C2Cl6, contains the most moles of carbon.