Give two reason (evidence) why we think the earth's outer core is liquid

What is the mass of sodium in 3 moles of sodium chloride

The boiling point of liquids is very high what does it indicate

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.