The reduction of iron(III) oxide to iron during steel-making can be summarized by this sequence of reactions: +2CsO2g ⇌ 2COg K1 +Fe2O3s3COg ⇌ +2Fel3CO2g K2 The net reaction is: +2Fe2O3s+6Cs3O2g ⇌ +4Fel6CO2g K Write an equation that gives the overall equilibrium constant K in terms of the equilibrium constants K1 and K2. If you need to include any physical constants, be sure you use their standard symbols, which you'll find in the ALEKS Calculator.

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

false

because it does not have the potential to be entirely used up

c) should be the answer.