Answer:
3.71 x 1021 (First option)
Explanation:
Let's determine the molar mass of the compound.
C₁₀H₁₄N₂ = 12. 10 + 14 .1 + 14 .2 = 162 g/mol
So 162 grams of compound are contained in 1 mol
1 g of C₁₀H₁₄N₂ are contained in ( 1 / 162) = 0.00617 moles
Let's conver the moles into amount of molecules (mol . NA)
0.00617 . 6.02×10²³ = 3.71×10²¹ molecules
