1. Al + HCl —> AlCl3 + H2 2. NH3 + O2 —> NO + H2O 3. Fe + O2 + H2O —> Fe(OH)2 4. KClO3 —> KCl + O2 5. (NH4)2Cr2O7 —> N2 + Cr2 O3 + H2O

Diketahui persamaan reaksi: Al(s) + HNO3 (aq) → AI(NO3)3(aq) + H2(g) (belum setara) Perbandingan larutan asam nitrat yang direaksikan dengan gas hidrogen yang dihasilkan saat setara adalah .... A. 1 : 1 D. 3 : 1 B. 2 : 1 E. 3 : 2 c. 2:3

5

0.0

Jawaban terverifikasi

Koloid dapat dibuat dengan cara – cara berikut : 1) 2H2S(g) + SO2(aq) 🡪 2H2O(l) + 3S(s) 2) FeCl3(aq) + 3H2O(l) 🡪 Fe(OH)3(s) + 3HCl(aq) 3) 2H3AsO3(aq) + 3H2S(l) 🡪 6H2O(l) + As2S3(aq) 4) 2NaCl(aq) + Ca(OH)2(aq) 🡪 CaCl2(aq) + 2NaOH(aq) Pernyataan yang benar adalah …. A. 1, 2, dan 3 B. 1 dan 3 C. 2 dan 4 D. 4 saja E. 1, 2, 3, dan 4

1

0.0

Jawaban terverifikasi

Diketahui beberapa pernyataan sebagai berikut. 1. mesin kendaraan lebih bersih 2. bersifat ramah lingkungan 3. menghasilkan sedikit energi 4. kinerja mesin meningkat 5. pembakaran lebih optimal Keunggulan bensin dengan bilangan oktan 98 dibanding bensin dengan bilangan oktan 88 ditunjukkan oleh nomor … . A. 1 dan 3 B. 1 dan 4 C. 2 dan 3 D. 2 dan 4 E. 2 dan 5

1

0.0

Jawaban terverifikasi

The Legend of the Crying Stone In the past, on a hill far from the country, there lived a poor widow and her only daughter. Her daughter was really beautiful, yet lazy. She did not want to help her mother at all. Moreover, she was also really spoiled, her mother must fulfil whatever she wanted. One day, the woman and her daughter went to the market. The beautiful daughter wore her best clothes and walked in front of her mother. She did not walk side by side with her mother as she felt ashamed. Everyone looked at her and was amazed by her beauty. "Hi girl, you look so beautiful. Anyway, who is the old woman behind you? Is she your mother? Why do you let her bring such a heavy shopping basket?" asked the man. "Oh my Gosh, of course she is not. She is just my maid and it is her job to help me shop," answered the daughter. Every time she got such questions, she would respond the same. Her mother just remained silent. However, hearing that thing over and over again made the mother's heart hurt. Suddenly, the mother stopped and sat off the road, crying. "Mom, why do you stop there? Let's get going or we won't be home before midnight," shouted the daughter. The mother did not respond to her, she raised her hands and prayed, "My Lord, please, forgive me for my inability to educate this child. I'm willing if you punish this disobedient child, Lord." The sky suddenly darkened, a huge lightning bolt struck, and it started to rain. The daughter started to panic as she could not move her leg, slowly her legs turned to stone and continued to spread to other parts of his body. "Mom, I am really sorry. Please, forgive me. Help me mom, help! Help me, please." However, it was too late. There's no point in regretting what she did, her whole body had turned to stone. Surprisingly, from the stone statue's eyes, tears kept flowing. That is why, people called that statue, the crying stone. Based on the legend above, list the chronology of the events in the story and rewrite the story using sequence words provided. 1.Once upon a time, 2.One day, 3.While 4.After that, 5.A little later, 6. Then 7. Suddenly 8. But then 9. Eventually

63

5.0

Jawaban terverifikasi

Berikut ini beberapa penerapan sifat koligatif larutan dalam kehidupan: (1) Hujan buatan (2) Penyerapan air oleh akar tanaman (3) Pembuatan es putar (4) Menambahkan glikol dalam radiator (5) Proses tranfusi darah Penerapan sifat penurunan titik beku larutan terdapat pada pasangan nomor .... A. 1 dan 2 B. 2 dan 3 C. 2 dan 5 D. 3 dan 4 E. 4 dan 5

3

0.0

Jawaban terverifikasi