Development of a 4D Model-Based Computational Chemistry Practicum Guide: An Evaluation of Its Validity and Practicality Linda Kurnia Mustafa, Muliadi Muliadi, Deasy Liestianty, Nurfatimah Sugrah, Dira Ayu Annisa, Dwi Finna Syolendra Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo Vol. 11 No. 2 2026 DOI 10.36709/jpkim.v11i2.256