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Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes
The average family in the United States could save 2,700 gallons of water per year by installing a WaterSense certified showerhead. [17] Some Air assisted ultra-low flow showerheads are able to maintain a satisfying showering experience while using a much smaller 1.6 gpm.
The Mark 50 torpedo is a U.S. Navy advanced lightweight torpedo for use against fast, deep-diving submarines. The Mk 50 can be launched from all anti-submarine aircraft and from torpedo tubes aboard surface combatant ships. The Mk 50 was intended to replace the Mk 46 as the fleet's lightweight torpedo. [1]
The O'Shaughnessy Dam is located on the Scioto River near Dublin, Ohio, United States. The dam forms O'Shaughnessy Reservoir, which is a major source of drinking water for the city of Columbus . It was completed in 1925 following recommendations of then superintendent Jerry O'Shaughnessy (for whom the dam was named).
The torpedo boat received orders to move in closer to determine whether or not the vessel was an enemy warship. By 1335, Winslow reached a point approximately 1,500 yards (1,371.6 m) from her quarry when a white puff of smoke from the Spaniard's bow gun signaled the beginning of an artillery duel which lasted one hour and 20 minutes.
Hydrogen peroxide works best as a propellant in extremely high concentrations (roughly over 70%). Although any concentration of peroxide will generate some hot gas (oxygen plus some steam), at concentrations above approximately 67%, the heat of decomposing hydrogen peroxide becomes large enough to completely vaporize all the liquid at standard pressure.
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