KIBU2023-03-292023-03-292022-11-15http://erepository.kibu.ac.ke/handle/123456789/9038ESM 724E:Chemistry EducationenAttribution-NonCommercial-ShareAlike 3.0 United Stateshttp://creativecommons.org/licenses/by-nc-sa/3.0/us/ESM 724E:Chemistry EducationESM 724EChemistry EducationOther