Help I x-ed out what I know it isn’t.

Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage.

Write the overall equation for the reaction for lithium battery

How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?