How are cis-trans isomers used for night vision? ​

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

Which sample at stp has the same number of atoms as 18 liters of ne at stp

Need what is special about water as a compound? how does water regulate climate? what drives water evaporation?   why is the water vapor fresh water when it rises from the ocean? why might freshwater in the form of snow take longer to enter the water cycle again than liquid precipitation?   what is an aquifer? what role do people play in the water cycle? plz just answer as many as you can ! thx if you !