If the cell emf of a zn–cu cell is 0.80 v when the concentration of zn2+ is 2.0 m, what is the concentration of cu2+?

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

What is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false