HIMMAH, Rifdah Fa’iqotul; HIDAYAH, Rusly. Profile of Students’ Problem-Solving Skills on Redox Reactions Using PBL-Based E-Worksheet. Hydrogen: Jurnal Kependidikan Kimia, [S. l.], v. 14, n. 1, 2026. DOI: 10.33394/hjkk.v14i1.19534. Disponível em: https://ojspanel.undikma.ac.id/index.php/hydrogen/article/view/19534. Acesso em: 27 feb. 2026.