What is an example of chemical change

219 grams of iron (iii) oxide reacts with excess carbon according to the reaction equation shown below. fe2o3 + c → fe + co2 after a scientist performs the chemical reaction they find the actual yield of iron to be 57.4 grams. calculate the percent yield of this chemical reaction.

What are the major types of a chemical compound

A) equal lines b) parallel lines c) perpendicular lines d) none of the above