heterogeneous mixture, because, the layers are called phases and a heterogeneous mixture has two or more phases. the oil phase is less dense then water so it floats on top, etc.
I need details to solve for you
Answer: 30.08 g/mol
Explanation:
C2= 12.01 H6=1.01
12.01(2) + 1.01(6) =
24.02 + 6.06 =
30.08 g/mol