1.Ninetylitersofwaterisequalto0.09tons.2.Theconversionratebetweentonsandlitersis1ton=1000liters.3.Therefore,90litersofwaterisequivalentto0.09tons.4.Liters(L)isaunitofvolumeintheInternationalSystemofUnits,where1literisequalto1000milliliters(ml).5.Waterhasanapproximatedensityof1grampermilliliterunderstandardconditions.6.Thismeansthat1literofwaterweighsapproximately1000grams,or1kilogram.7.Ineverydaylife,1kilogramisoftenreferredtoas2jin(斤).8.Insummary,theweightof1literofwateristhesameas1kilogramor2jin.9.Additionally,commonunitconversionsinclude:1kilometer=1000meters,1meter=10decimeters,1decimeter=10centimeters,1meter=100centimeters,1centimeter=10millimeters.10.Involumeunitconversions,1cubicmeter=1000cubicdecimeters,1cubicdecimeter=1000cubiccentimeters,1cubicdecimeterisalsoequalto1liter,and1cubiccentimeterisequalto1milliliter.11.Furthermore,1tonisequalto1000kilograms,1kilogramisequalto1000grams,andisalsoequalto1kilogram.