a cylinder like the one that pictured contains a gas at 5.25 atm pressur. when the gas is allowed to expand toa final volume of 12.5 L, the pressure drops to 1.85 atm. what was the original volume of the gas

About 8 gallons of fuel will be used. (8.08)

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts