Which is true of the products in this combustion reaction? 4fe + 3o2 2fe2o3

a. the products contain 4 iron atoms and 6 oxygen atoms.

b. the products are located to the left of the arrow in the chemical equation.
c. the products have the same physical and chemical properties as the reactants.
d. the products are the atoms, molecules, or compounds that participate in the reaction.

Joseph has hypothesized that sound travels in waves. if he were following the scientific method, what should he do next? a. ask a question. b. test the hypothesis. c. study the results. d. tell other scientists about his hypothesis.

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

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.