1. An Aluminum block weighs 12N in air and 8N in water. What is the mass of the block?
2. How much energy would it take to transform 76g of water to steam at 125C?
3. A cube of wood of density 0.78g/cm3 is 10cm on a sie. When placed in water, what height of the block will float above the surface? (water density =1.00g/cm3)