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vaieri [72.5K]
3 years ago
6

Which of the following statements about the mechanism of the Diels-Alder reaction is

Chemistry
1 answer:
77julia77 [94]3 years ago
4 0

Answer:

A) Three pi bonds break; two sigma bonds and one pi bond form.

Explanation:

Diels Alder reaction -

It is one of the chemical reaction , where the reaction of a substituted alkene and a conjugated diene takes place , is referred to as the diel alder reaction .

Where the substituted alkene is referred to as the dienophile .

Hence , it is also known as diene - dienophile reaction.

The mechanism followed by the reaction is same as for pericyclic reaction , in this reaction , there is breakage of three pi bond and the formation of one pi an two sigma bond.

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The mass of the water in the container given the data from the question is 22.5 g

<h3>Data obtained from the question</h3>
  • Mass of cold lead (M) = 54.3 g
  • Temperature of lead (T) = 384.4 K
  • Temperature of water (Tᵥᵥ) = 291.2 K
  • Equilibrium temperature (Tₑ) = 297.6 K
  • Specific heat capacity of the water (Cᵥᵥ) = 4.184 J/gK
  • Specific heat capacity of lead (C) = 0.128 J/gK
  • Mass of water (Mᵥᵥ) = ?

<h3>How to determine the mass of water </h3>

Heat loss = Heat gain

MC(T – Tₑ) = MᵥᵥCᵥᵥ(Tₑ – Tᵥᵥ)

54.3 × 0.128 (384.4 – 297.6) = Mᵥᵥ × 4.184(297.6 – 291.2)

6.9504 × 86.8 = Mᵥᵥ × 4.184 × 6.4

Divide both side by 4.184 × 6.4

Mᵥᵥ = (6.9504 × 86.8) / (4.184 × 6.4)

Mᵥᵥ = 22.5 g

Learn more about heat transfer:

brainly.com/question/6363778

#SPJ1

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