Final answer:
Key contributors of CMOP include Ed Vitz from Kutztown University, John W. Moore from UW-Madison, and Justin Shorb from Hope College, along with others who have significantly impacted chemistry education materials.
Step-by-step explanation:
When asked to name two (really three) contributors of CMOP, it is important to recognize the individuals who have contributed significantly to the field. Ed Vitz from Kutztown University, John W. Moore from UW-Madison, and Justin Shorb from Hope College have all played important roles in the contributions and attributions to chemistry education materials related to CMOP.
Other notable contributors include Xavier Prat-Resina of the University of Minnesota Rochester, Tim Wendorff, and Adam Hahn. These individuals, among others, have collaborated on educational resources that greatly benefit students and educators in the realm of chemistry.