Write the mechanism of the following reaction CH3CH2OH + HBr ---->
1. Write the mechanism of the following reaction CH3CH2OH + HBr ---->
substitution reaction
CH3-CH2-OH + HBr --> CH3 - CH2 - Br + H2O
I hope its helps...
2. find the response for the following short message. draw lines between then.
Jawaban:
1.b
2.a
3.e
4.d
5.c
Penjelasan:
maaf jika salah
3. Find the response for the following short massage. Draw lines between them.
Jawaban:
1. b
2. a
3. e
4. d
5. c
Penjelasan:
semangat kakak!!!!
Jawaban:
1. B
2. A
3. E
4. D
5. C
4. balance the following redox reaction using half reactionC2O42- + MnO4-->MN2+ + CO2
Jawaban:
Frank Lampard ingin tahu bagaimana cara agar cepat punya anak dari seorang teman yang baik dan benar
5. Give the true answer to the following questions. How was your friends reaction when you read your card?
i think just so so if that reality so good
6. Draw the symbol based on the following warning. A. you are not allowed to turn around
You are not allowed to turn around
7. The rate constant for a first-order reaction is 3.64. 10 - 2 seconds -1 at 298 k.. what is the rate constant for the reaction at 350 k if the activation energy of the reaction is 50.2 kj/mol. given: the quantity r = 8.314 j/k.mol.
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8. draw clock based on the following statement
1. 06.00
2. 12.30
3. 12.45
4. 01.45
5. 03.30The answer was created in image
(jawaban telah saya buat di gambar)
untuk penulisan angka
1) 06.00
2) 12.30
3) 12.45
4) 01.45
5) 03.30
9. the person who can measure and draw a house for other people is
Jawaban:
The person who can measure and draw a house for other people isArchitect
-sy
Jawaban:
the person who can measure and draw a house for other people is architect
10. Why is concentration vs reaction rate linear for first order reaction ?
The reason why on order 1 reaction the concentration and reaction rate is linear for first order reaction, That's because experiments have shown that the rate of a reaction is directly proportional to the concentration.
Pembahasan
Reaksi primer adalah reaksi yang laju reaksinya sebanding dengan konsentrasi reaktannya. Dengan kata lain, menggandakan konsentrasi menggandakan laju reaksi. Reaksi primer dapat memiliki satu atau dua reaktan, seperti dalam kasus reaksi dekomposisi. Reaksi primer dapat didefinisikan sebagai reaksi kimia di mana laju reaksi bergantung secara linier pada konsentrasi hanya satu reaktan. Dengan kata lain, reaksi primer adalah reaksi kimia yang lajunya berubah berdasarkan perubahan konsentrasi hanya satu reaktan. Jadi orde reaksinya adalah 1.
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11. Word equation for the reaction of astatine with iron
Jawaban:
Persamaan kata untuk reaksi astatin dengan besi
Penjelasan:
suruh apasih aku artiin aj
12. Mark the syllable boundaries in the following words, draw labeled syllable trees for each of them, and create the audio recording of each words: a. petrol b. unknown c. contrary d. extraordinary
Syllableboundaries
a. pe-trol
b. un-known
c. con-tra-ry
d. ex-tra-or-di-na-ry
13. Among the following compounds, the most active electrophilic addition reaction is .....
Among the following compounds, the most active electrophilic addition reaction is .....
Jawaban:- Nuclear
=-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-=
14. 2. The equilibrium constant Kp for the reaction2SO3 +2SO2(g) + O2(g)is 1.8 x 10-5 at 350°C. What is Kc for this reaction?
Jawaban:
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15. Write the word equation for the reaction between zinc and copper sulfate.
Jawaban:
Zn + CuSO4 ⇒ ZnSO4 + Cu
Penjelasan:
Zn has oxidation number equal to +2. Cu has oxidation number equal to +2. SO4 has oxidation number equal to -2.
16. Calculate the heat of reaction for combustion of C2H5OH using bond energies
Reaction C₂H₅OH + 3O₂ --> 2CO₂ + 3H₂O
Then draw the structural formulas for each molecule showing single and double bonds.
C₂H₅OH has one C-C bond, five C-H bonds, one C-O bond and one O-H bond
add up the bond energies for a mole of each of these single bonds from your bond energy chart.
Now in O₂ we have O=O double bond so add up the total bond energy for three moles of O₂. (three times the doubly bonded oxygen bond energy)
CO₂ is formed O=C=O, and you have two moles of CO₂, and four moles of C=O bonds so multiply the C=O bond energy by 4
and for H₂O, bonded H-O-H you will have 6 moles of H-O bonds, so multiply the H-O bond energy by six.
Now to get ΔH for this reaction, simply subtract the sum of the reactant bond energies from the sum of the product bond energies and you have it.
17. write one of the 'useful phrases' as an appropriate reaction to each of the following events from the script.
Answer:
In making an appropriate response or reaction, you need to look carefully at the expression or sentences used as well as its tone, whether it is meant to be humorous or serious one. Then, you can respond it in a creative way too, instead of just ordinary ones so long as appropriate. Here's the possible phrases to respond
- The cruel king has threatened to invade!
(Really? Then we'd better prepare ourselves. for normal reaction)
(What else is new? He's just bluffing. for unusual reaction)
- We are still alive; the soldiers are gone!
(Then we shall pray for them. They have fought bravely to protect us. (normal reaction)
(That's rather ironic for them. They should've been alive instead of us, who aren't trained for war. (uncommon reaction)
- The riddle is solved!
(At last! after a while - normal)
(Are you kidding me? what took you so long to solve such easy riddle - uncommon )
- We need a drum that sounds when nobody beats it!
(Such is impossible! - normal)
(Really? are you still in wonderland? - uncommon sardonic)
- Will the paper drum with the bee work?
(Huh, I don't get it - normal as it's unclear in meaning)
Kelas: SMP
Mapel: English
Kategori: expression and response
18. why is the thermite reaction useful for welding rails?
Jawaban:
Thermite welding is widely used to weld railroad rails.The weld quality of chemically pure thermite is low due to the low heat penetration into the joining metals and the very low carbon and alloy content in the nearly pure molten iron.
19. Question 2 Study the circuit diagram. Draw the circuit symbols for a cell, a switch and a lamp.
Jawaban:
ini cuma disuruh bikin gambar rangkaian seri kak
yang terdiri dari lampu, stop kontak, dll.
20. 28. Which does NOT change with time for a first-order reaction? (A) the amount of reactant that disappears in each half- life (B) the concentration of the reactant (C) the length of each half-life (D) the rate of the reaction
Pada reaksi order pertama yang tidak mengalami perubahan adalah :
C. The length of each half-life
Pembahasan
Reaksi orde pertama adalah reaksi dalam orde menetap, laju reaksi berbanding lurus dengan konsentrasi salah satu reaktan. Reaksi orde pertama sering memiliki bentuk umum A → produk. Tingkat diferensial untuk reaksi orde pertama adalah sebagai berikut:
laju=−Δ[A]/Δt=k[A]
Jika konsentrasi A digandakan, laju reaksi menjadi dua kali lipat, jika konsentrasi A dinaikkan dengan faktor 10, laju reaksi meningkat dengan faktor 10, dan seterusnya. Karena satuan laju reaksi selalu mol per liter per detik, satuan konstanta laju orde pertama adalah detik timbal balik (s−1). Hukum laju terintegrasi untuk reaksi orde pertama dapat ditulis dalam dua cara yang berbeda: satu menggunakan eksponen dan satu menggunakan logaritma. Ingat bahwa hukum laju terintegrasi memberikan hubungan antara konsentrasi reaktan dan waktu.
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