Most full scuba tanks have a pressure of between 1,800 p. s.i. and 3,000 p. s.i. (pounds per square inch). approximately 70 to 85 cubic feet of air has been squeezed into the tank. when a diver takes his air tank to be refilled, the dive shop will hook his tank to a compressor with a pressure hose and place his tank in a tub of water while it is being filled. what reasons can you give for placing the tank in water? while thinking about this, keep the gas laws in mind. explain your answer in detail.

quartz

explanation:

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."