Help!! A student fills a graduated cylinder to 25.0 mL with liquid. She then immerses a solid in the liquid. The volume of the liquid rises to 33.9 mL. The mass of the solid is 63.5 g.

Answer:
1) 33.9 - 25 = 8.9 (I'm not exactly sure what the question is asking for, but I'm assuming it's the difference between the original amount of water in the cylinder and the amount of water with the solid)
2) 8.9
3) d=m/v ; d = 63.5/8.9 = 7.13
4) g/mL