Research, find and display references (include a description and a picture) for water cycle, nitrogen cycle and carbon cycle. I have a project

18. use the activity series to predict whether the following synthesis reaction will occur. write the chemical equations for the reaction if it's predicted to occur. (s) + o2(g) -> *note: it is possible.*

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?

If a solution contains 3 moles/liter of sodium chloride (nacl, made of sodium ions and chloride ions), what is the osmolarity of this solution