The overall equation for the electrolysis of aluminium oxide is: 2 Al2O3–>4Al + 302
Calculate the mass of oxygen produced when 2000 kg of aluminium oxide is
completely electrolysed.
Relative atomic masses (Ar):
O = 16
Al = 27
Mass of oxygen =?

The density of a planet is 0.69 g/cm3 (density of water is 1.0 g/cm3). which of the following planets might this be? a. mercury b. venus c. saturn d. mars

List four observations that indicate that a chemical reaction may be taking place

The diagram below shows a cell placed in a solution.a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it.it will expand as water moves into it. it will shrink as water moves into it.