How many C₂H₄ molecules are contained in 45.8 mg of C₂H₄? The molar mass of C₂H₄ is 28.05 g/mol.
1) 3.69 × 10²³ C₂H₄ molecules
2) 9.83 × 10²⁰ C₂H₄ molecules
3) 4.69 × 10²³ C₂H₄ molecules
4) 2.71 × 10²⁰ C₂H₄ molecules
5) 7.74 × 10²⁶ C₂H₄ molecules