Determine ΔrG° for the following reaction:

Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g)

Use the following reactions with known ΔrG° values:

2Fe(s)+32O2(g)→Fe2O3(s), ΔrG° = - 742.2 kJmol−1

CO(g)+12O2(g)→CO2(g), ΔrG°= - 257.2 kJmol−1

Express your answer using one decimal place.

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

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat