Why does oil float on water? Oil has less density than water and it is immiscible in water. 2. Explain how a hot air balloon rises. 3. A compound has a volume of 10.1 mL and 17.6 g. Calculate the density and specific gravity. a. b. Will the object sink or float? 4. 37.6 mL of sample has a density of 0.956 g/mL. Calculate the mass (grams) of the liquid. (Use dimensional analysis method to find the answer.) a. b. What is the volume of the liquid if the mass 14.8 g?