Acetone and water are miscible. acetone and hexane are also miscible.
what is the possible explanation for their miscibilities, considering that water and hexane are immiscible?

The rule of thumb is that "like dissolves like"
Acetone has a C-C-C back bone making it similar to the hydrocarbon of hexane.
water's strongest intermolecular forces is hydrogen bonding while ether's is dispersion with some dipole-forces.

0.50 hope this  

B? i feel like this is a trick