Answer:
0.683 moles of C₂H₆
Explanation:
We begin from this:
1 mol of anything has 6.02×10²³ molecules.
This is the NA (Avogadro's Number), therefore we solve the question by a rule of three:
If 6.02×10²³ molecules are contained in 1 mol of C₂H₆
Then, 4.11×10²³ molecules will be contained in (4.11×10²³ . 1) / 6.02×10²³ = 0.683 moles
