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All Journal Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo Chemistry Indonesian Journal of Chemical Research
Mandasari, Ekacahyana
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Biochemistry, Genetics & Molecular Biology Chemistry Education Engineering Environmental Science

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PENGEMBANGAN MEDIA PEMBELAJARAN KIMIA MENGGUNAKAN LABORATORIUM VIRTUAL BERBASIS SMARTPHONE ANDROID Fatahu, Fatahu; Walukou, Maryce Agusthinus; Mulyana, Wa Ode; Mandasari, Ekacahyana
Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo Vol 6, No 3 (2021): Edisi Desember
Publisher : Jurusan Pendidikan Kimia Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/jpkim uho.v6i3.22960

Abstract

Pembelajaran kimia memiliki kegiatan pembelajaran teori dan praktikum. Hasil wawancara dengan Kepala Madrasah Aliyah Negeri 1 Kendari bahwa siswa kurang memiliki kesiapan sebelum memasuki laboratorium dan keterbatasan alat dan bahan praktikum. Tujuan penelitian ini adalah sebagai alternatif solusi pada keterbatasan sumber daya pembelajaran di sekolah/madrasah yaitu kemudahan melakukan praktikum tanpa terikat waktu maupun kelas konvensional di laboratorium yang juga terbatas alat dan bahan praktikum. Penelitian ini dilaksanakan di Madarasah Aliyah Negeri 1 Kendari. Metode penelitian yang digunakan adalah Research and Development (R & D): (1) potensi dan masalah; (2) pengumpulan data; (3) desain produk; (4) validasi desain produk; (5) revisi desain produk; (6) uji coba produk terbatas. Aplikasi virtual lab diuji cobakan kepada 20 siswa kelas XI jurusan IPA untuk dilihat aktivitas dan respon siswa. Hasil penelitian menunjukkan 85% siswa “sangat mendukung” dan 15% “mendukung” terhadap media pembelajaran berupa aplikasi virtual lab.
The Analysis of the Ability NaOH Activated Rice Husk Ash Silica to Reduce Cl Ion Levels Febryzha, Nurul Widya; Harimu, La; Mulyana, Wa Ode; Mandasari, Ekacahyana
Indonesian Journal of Chemical Research Vol 12 No 3 (2025): Edition for January 2025
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2025.12-feb

Abstract

Research has been carried out to analyze the ability of NaOH-activated rice husk Ash Silica to reduce Cl Ion Levels. This study aimed to determine the optimum mass, optimum pH, optimum contact time and apply NaOH-activated rice husk ash silica to reduce Cl ion levels in seawater. The method used in this study was an experimental method with the parameters studied, namely optimum mass, optimum pH, optimum contact time, and the ability of NaOH-activated rice husk ash silica to reduce Cl ion levels in seawater. The results showed that the optimum adsorbed percentage of Cl ions occurred at an optimum mass of 0.025 gram, optimum pH of 7, and optimum contact time of 30 minutes with an adsorbed percentage of 45.7% and an adsorption capacity of 9.14 mg/g. The Cl ion content of seawater samples that can be reduced using NaOH-activated rice husk ash silica is 16.925 ppm with an adsorbed percentage of 33.85%, so it can be concluded that NaOH-activated rice husk ash silica can be used to reduce Cl ion levels.
Co-Authors Fatahu, Fatahu Febryzha, Nurul Widya La Harimu Mulyana, Wa Ode Walukou, Maryce Agusthinus