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Novosadov [1.4K]
4 years ago
12

Draw the major condensation product obtained by treatment of ethyl 3-methylbutanoate with sodium ethoxide in ethanol.

Chemistry
1 answer:
dexar [7]4 years ago
6 0

Answer:

ethyl 3-ethoxy-3-hydroxy-2-isopropyl-5-methyl hexanoate

Explanation:

In this case, we have a <u>very strong base</u> (sodium ethoxide). Therefore, this compound will remove a hydrogen from ethyl 3-methyl butanoate generating a <u>carbanion</u>.

This carbanion, can attack <u>another ethyl 3-methyl butanoate molecule </u>on the carbonyl group generating a new C-C bond and producing a negative charge in the oxygen.

Then the ethanol can <u>protonate</u> the molecule generating an "OH" group and the ethoxide.

See figure 1

I hope it helps!

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What happens when liquid changes to gas?
Nady [450]

Answer:

#1

The temperature that this happens is called the freezing point and is the same temperature as the melting point. As more energy is put into the system, the water heats up, the molecules begin moving faster and faster until there is finally enough energy in the system to totally overcome the attractive forces.

Explanation:

#2

Heating a liquid increases the speed of the molecules. An increase in the speed of the molecules competes with the attraction between molecules and causes molecules to move a little further apart. ... A decrease in the speed of the molecules allows the attractions between molecules to bring them a little closer together.

4 0
3 years ago
How many moles are in 3.45g of KCI ?
artcher [175]
<h3>Answer:</h3>

0.0463 mol KCl

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

3.45 g KCl

<u>Step 2: Identify Conversions</u>

Molar Mass of K - 39.10 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of KCl - 39.10 + 35.45 = 74.55 g/mol

<u>Step 3: Convert</u>

  1. Set up:                              \displaystyle 3.45 \ g \ KCl(\frac{1 \ mol \ KCl}{74.55 \ g \ KCl})
  2. Multiply/Divide:                \displaystyle 0.046278 \ mol \ KCl

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

0.046278 mol KCl ≈ 0.0463 mol KCl

8 0
3 years ago
An object with a mass of 10.0 kg is moving at a speed of 5.00m/s. The kinetic energy of the mass is
NemiM [27]
KE = (1/2)mv^2
m = 10.0 kg
v = 5.00 m/a

KE = (1/2)(10.0)(5.00)^2 = (1/2)(10.0)(25.0) = 125 J

C. 125 J
7 0
3 years ago
Which is the best example of a new substance forming?
Hunter-Best [27]

Answer:

lighting a match is the answer.

8 0
3 years ago
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What came first, Layer D or Rock E? <br><br> Layer D<br><br> Rock E
Leno4ka [110]

Answer:

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Explanation:

First means older.

Rock E is an intrusion, so it is younger than all the layers it pass through. Apparently, Rock E is the youngest layer. So, Layer D is came before Layer E.

Hope this helps!

Have a great day :)

6 0
2 years ago
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