September 2018 1 78 Report
Pembakaran sempurna asam asetat CH3COOH (l)menjadi H2O(l) dan CO2 (g) pada tekanan tetap menghasilkan energ sebesar 871,7 kJ per mol CH3COOH.Tuliskan persamaan terokimiuntuk reaksi tersebut.
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Pada suhu tertentu, kecepatan penguraian N2O5 menjadi NO2 dan O2 adalah 2,5 x 10-2 mol /L.s , maka kecepatan pembentukan NO2 adalah ….
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Larutan 720 mL nAoH 0,2M MENGANDUNG nAoh (Mr=40)adalah
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Tolong buatkan pargraf yang berisi-tentang go greenn minimal 2 paragraf dalam bahasa inggris?
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There once was a fisherman who lived with his wife in a small hut close by the seaside. The fisherman used to go fishing everyday. One day, as he sat in his boat with his rod, looking at the sparkling waves and watching his line, all of a sudden his float was dragged away deep into the water. He quickly started to reel in his line and managed to pull out a huge fish. “Wow! This will feed us for days.” Much to his surprise, the fish started to talk and said,”Pray, let me live! I am not real fish; I am an enchanted prince. Put me in te water again, and let me go! Have mercy o’ kind fisherman.” The astonished fisherman quickly threw him back, exclaiming, “I don’t want hurt a talking fish! Go on! Go where came from.” When the fisherman went home to his wife, he told her everything that had happened and how, on hearing it speak, he had let it go again.”Didn’t you ask it for anything!” said the wife. “No, I didn’t, what should i have asked for?” replied the fisherman. ”I am surprised you don’t realize what you should have asked for. We live very wretchedly here, in this nasty dirty hut. We are poor and i am so miserable. You should have asked for nice cozy cottage. Now go back and ask the fish that we want a snug little cottage”, said his wife. The fisherman wasn’t sure about this but he still went to the seashore, sat in is boat, went to the middle of the sea and said: “O enchanted beautiful fish! Hear my plea! My wife want not what i want, and she won’t give up till she has her own will, so come forth and help me!” The fish immediately came swimming to him, and said, “Well,what is her will? How can i help your wife? “Ah!” said fisherman, ”she say that when i had caught you, i ought to have asked you for something before i let you go. Shedoes not like living in our little hut, and wants a snug little cottage.” “Go home, then,” said fish,”She is already in the cottage!” so the fisherman went home, and saw his wife standing at the door of a nice trim little cottage.”Come in, come on in! Look at the beautiful cottage we have.” Everything went fine for a while, and then one day fisherman’s wife said,”Husband, there is not enough room for us in this cottage, go back to the fish and tell him make me an emperor.” “Wife,”said the fisherman, “I don’t want to go him again. Perhaps he will be angry. We ougth to be happy with what the fish has given us and not be greedy.” “Nonsense!” said wife; ”The fish will do it very willingly, I know. Go along and try!” with a heavy heart te fisherman went to the middle of the sea and said: “O enchanted beautiful fish! Hear my plea! My wife want not what i want, and she won’t give up till she has her own will, so come forth and help me!” tolong review tell tenteng the enchanted fish dengan sudut pandang fisherman
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Apa itu self confidence
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Diketahui energi ikatan (kJ mol-1) C rangkap 3 =812 c-c =347 H-H=436 C-H=414 Tentukan delta H reaksi:C2H2 + 2H2 ---->C2H6
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JIKA DIKETAHUI ENERGI IKATAN(kJ MOL-1) N RANGKAP 3 =914 H-H=436 N-H=391 tentukan delta H REAKSI 1/2N2(g)+1/2 1H2(g) ----->NH3(g)
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Diketahui kalor pembakaran C2H5OH (l) = -1380kJ mol-1,kalor pembentukan CO2 (g) dan H2O(l) masing-masing -394 kJ mol-1 dan -286 kJ mol-1.Tentukan kalor pembentukan C2H5OH(l).
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Diketahui persamaan termokia : C(s)+O2(g) menghasilkan CO2 (g);delta H=-394kJ mol-1 tentukan; a. Hitunglah kalor pada pembentukan 22 g gas CO2 (Mr=44) b. Hitunglah kalor pada pembakaran 30 g karbon (Ar=12)
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