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08.35 X - % docs.google.com ?: Vo 16,5 84 LTE K/S :D Berdasarkan infografis dan teks di bawah ini, maka pilihlah jawaban yang sesuai!* Proses Pembuatan Aluminium Bijah bauksit mengandung 50-60% AO, yang bercampur dengan zat-zat pengotor terutama FeO3 dan SiO2 Tahap Remumian bauksit dilakukan untuk menghilangkan pengotor utama dalam bauksit Pengotor utama bauksit biasanya terdiri dan Sio. FeO3, dan TiO₂. Caranya adalah dengan melarutkan bauksit dalam larutan natrium hidroksida (NaOH). Al2O+2NaOH+3H₂O 2NaA(OH) Aluminium okaida larut dalam NaOH sedangkan pengotomya tidak larut. Pengotor-pengotor dapat dipisahkan melalui proses penyaringan. Selanjutnya aluminium diendapkan dari filtratnya dengan cara mengalirkan gas CO; dan pengenceran 2NA(OH)+CO 2A(OH) NaCO3 + H₂O) Endapan aluminium hidroksida disaring dikeringkan lalu dipanaskan sehingga diperoleh aluminium oksida muni (Al2O1) 2A(OH) Al2O3 + 3H200 Tahap peleburan alumina dengan cara reduksi melalui proses elektrolisis menurut proses Hall-Herault Dalam proses Hall- Heroult aluminum oksida dilarutkan dalam lelehan kriolit (Na,A/F) dalam bejana baja berlapis grafit yang sekaligus berfungsi sebagai katodle Selaniutrva elektrolisis dilakukan pada saha 950°C. Sebagai anode digunakan batang grafit. Setelah diperoleh A60 murni. maka proses selanjutnya adalah elektrolisis laburan Al₂O). Pada elektrolisis ini Al-O, dicampur dengan CaF; dan 2-8 % kriolit (NajA(F) yang berfungsi untuk menurunkan titik lebur Al2O3 (titik lebur A60 mumi mencapai 2000°C), campuran tersebut akan melebur pada suhu antara 850-950°C. Anode dan katodenya terbuat dari grafit. Reaksi yang terjadi sebagai berikut Al2O)n Anode (+): 30 'in⋅ 2A€³+un+30 3/20₂+60- 2A3/20 Katode (-): 2A() +602A Reaks sel: 2A(+30) (sumber: https://finance.detik.com/infografis/d-5633872/begini-proses-pembuatan-aluminium-milik- induk-holding-bumn-tambang dan https://id.wikipedia.org/wiki/Aluminium) Penambahan kriolit pada pengolahan logam aluminium dengan proses Hall-Heroult berfungsi untuk menurunkan titik lebur alumina. Pada proses elektrolisis alumina, menggunakan katoda dan anoda grafit. Pada proses pengolahan logam aluminium dari bauksit, logam aluminium yang dihasilkan sebanyak 25% dari bahan baku bauksit. Pada proses penghilangan kotoran pada bauksit dengan cara dengan melarutkan bauksit dalam larutan natrium hidroksida (NaOH) terjadi reaksi redoks Perhatikan data berikut! * Benar Salah O O O (2) No. Kation Anion (1) Na* K+ Rumus Kimia NO SO² (3) Mg2+ PO³ Na,NO K-SO Mg:(PO); Nama Senyawa Natrium Nitrat Kalium Sulfat Magnesium Fosfat (Þ) A{3+ CO, Fel SO Al₂(CO₂), FeSO Alumunium Karbonat Besi Sulfat (5) Berdasarkan data tersebut, pasangan data yang berhubungan secara tepat adalah.... ☐ ☐ ☐ ☐ ☐ (4) (5) Perhatikan teks dan infografis berikut ini. * |||

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Pertanyaan menjawab soal dari cerita. Aku takut untuk menjawab soal soal ini, karena takut salah dalam penulisan dan pendapat ku. Mohon b... Baca Lebih Lanjut

19.42 ← 232233 332 A N N Siswa 9 CreativClass Spenda alvin, bilal, bu, bu, bu, isabel, pitri, +62 819-3095-5936... Taula iya buu 06.00 bu epong Read the text and answer the questions. The Lazybones Once upon a time, lived a very lazy boy, his name was Tom. He was very lazy, so that people called him, "the lazybones". All the things he did were only laze around. He never helped his parents who had a bakery, whereas, his parents worked very hard in the bakery. They were helped by Bob, an employee. One day, Mr. Jones, Tom's father was sick. His illness made him had to stay on the bed all day. He was very worried about his bakery. He was also worried that all the customers would be disappointed because they couldn't enjoy the bread as usual. But his wife, Mrs. Jones, Tom's mother, calmed him, and said that his son would help her and Bob in the bakery. Mr. Jones didn't believe that, neither did Tom. Tom was assigned to deliver the breads to the customers in the town. Since then, Tom had to wake up very early in the morning and delivered the breads. In the beginning, it was very hard work to do for Tom. The customers were also surprised because their breads were delivered by Tom, but then they understood after Tom explained to them. Tom got compliments from the customers for the first time. As day passed, more customers praised him. Tom then became proud of himself too. Since then, he thought that working wasn't bad after all. In fact he was quite happy could help his parents and got compliments from the customers. From that day on, Tom no longer became a lazybones. Questions: 4.54% O 1. What was Tom's parents job? 2. What was Tom's father very worried about? 3. What was Tom's assignment? 4. How was Tom's feeling after the customers praised him? 5. What is the resolution of the story? nadia Ketik pesan ||| 08.42

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