Answer:
8.09 moles of ethane
Step-by-step explanation:
To calculate the number of moles of ethane, we need to use Avogadro's number, which is 6.022 x 10^23 molecules per mole. We can use this to convert the given number of molecules into moles.
Number of moles = Number of molecules / Avogadro's number
Number of moles of ethane = 4.87 x 10^24 / 6.022 x 10^23
Number of moles of ethane = 8.09 moles (rounded to two decimal places)
Thus, 8.09 moles of ethane contain 4.87x10^24 molecules of ethane.