Final answer:
To find the moles of C2H6 in 6.24×1023 molecules, divide the number of molecules by Avogadro's number (6.022×1023). The answer is 1.036 moles of C2H6.
Step-by-step explanation:
To calculate the moles of C2H6 in 6.24×1023 molecules of C2H6, we use Avogadro's number, which tells us that one mole of any substance contains exactly 6.022×1023 molecules.
The calculation can be set up as follows:
Number of moles = Number of molecules ÷ Avogadro's number
Number of moles = (6.24×1023 molecules) ÷ (6.022×1023 molecules/mol)
After dividing the number of molecules by Avogadro's number, the result is:
Number of moles = 1.036 moles of C2H6
This calculation demonstrates how to perform a dimensional analysis, in which the units of the given quantity cancel out, leaving the units of the desired quantity.