I am not sure if I did this answer right... A material will float on the surface of a liquid if the material has a density less than that of the liquid. Given that the density of water is approximately 1.0g/ml, will a block of material having a volume of 1.8*E4 in cubed and weighing 350lb float or sink when placed in a reservoir of water? and what is the density of the block of material?

Yes, I am able to convert from lbs , I have worked the problem I just want to know exactly where I went wrong.