Student use of a Carbon Hydrogen Nitrogen (CHN) elemental analyzer either in sophomore organic chemistry or freshmen general chemistry is uncommon. In this presentation the author will discuss the development of CHN lab activities in organic and general chemistry as well as in the environmental science curriculum at Arizona Western College. Specifically, the author will discuss how students use CHN mass percent data to determine: 1) the pros and cons of burning anthracite or bituminous coals for future electrical power generation, 2) the amount of oil that can be extracted from shale rock, 3) the theoretical volume of ethanol derived from post-harvest wheat biomass, and 4) the C:N ratio found in seeds from plants native to the Sonoran Desert. If time permits, the author will discuss future CHN activities involving the comparative nitrogen content in light red kidney and black beans, and pollen as well as activities related to students' understanding of how much two milligrams of material really is. The presentation's author gratefully acknowledges the financial support of the NSF (DUE-0310264, Course Curriculum Laboratory Improvement) to purchase a Perkin Elmer Series 2400 CHN Elemental Analyzer.