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. Author manuscript; available in PMC: 2022 Feb 22.
Published in final edited form as: J Lab Chem Educ. 2018;6(1):4–11.

Table 4.

Summary of steps for lab

Step 1 Theoretical O2 in room Students measure volume of room, perform dimensional and statistical analysis.
Step 2 Experimental O2 percent Students oxidize steel wool to calculate percent oxygen in room.
Step 3 Empirical formula from mass Mass steel wool sample before and after reaction. Use difference in mass to calculate empirical formula.
Step 4 Empirical formula from SEM/EDS Connect with RAIN Network for remote access to SEM/EDS. Use mass percent to find empirical formula.
Step 5 Terrarium Students design and create closed terrariums to observe increase in oxygen.