Plz help This equation for the reaction when solid magnesium and solid lead (II) oxide are heated together is:

Mg(s)+Pb(s) => MgO(s)+Pb(s)

a)what does tell you about the position of lead in the reactivity series? explain your answer.
b)rewrite equation as an ionic equation

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 !

Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?

The term gas is limited to those substances that exist in the gaseous state at