What mass of Aluminium is needed to completely react with 640 g of iron oxide? Show your working.

One or more substances changing into one or more substances is an example of a

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

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.