How many moles of sodium chloride are in 28 grams of NaCl?

A.) .265 mole NaCl

B.) .856 mole NaCl

C.) .479 mole of NaCl

D.) 1.2 mole NaCl

Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o          sncl2•4h2o          sncl2•6h2o

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 !

Type the letter that represents the correct location for each particle type below. the neutron is found at __ the electron is found at __ the proton is found at __