Gasoline is being discharged from a pipe. The pipe roughness is 0.500 mm and the pressure at point 1 is 2500 kpa. Find the pipe diameter to discharge gasoline at a rate of 0.10 m^3/s. Neglect minor loss

A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.