Atank containing diesel fuel(sg = 0.8) is open to the atmosphere at the top. a u-tube manometer is connected to the bottom of the tank. the depth of diesel fuel in the manometer is 1.2 m below the bottom of the tank. the manometer uses mercury as the fluid and has a differential mercury height of 2.3 m. what is the depth of diesel fuel in the tank?

On solidification from a melt, the polymer polyethylene forms a semi-crystalline spherulite structure. (i) sketch an individual spherulite and label the amorphous and crystalline regions. (ii) draw a schematic to show the changes in specific volume with temperature during cooling from the melt, comparing it to the theoretical extremes of fully crystalline and fully amorphous (indicate tm and tg)