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Andrew [12]
3 years ago
13

The diagram below shows four possible collisions between ethene and hydrogen chloride molecules.

Chemistry
1 answer:
mariarad [96]3 years ago
8 0
One of the factors that the collision theory encompass to explain the rate of reactions is the orientation of the collisions.

In some reactions the only some special orientations yield effective collisions (those which will result in a chemical change).

In the case of the ehtylene and hydrogen chloride, the hydrogen end of the hydrogen chloride molecule must collide with the double bond of the ehtene molecule, to transform the change the c-c double bond iinto a single bond.

This approach is represented by the collision 1 of the diagram.

For your information, when the Chloride end of the hygrogen chloride molecule approachs the double bond of the ethylene molecule, the excces of negative charge on the chloride (due to its electronegativity) will be repeled by the electron density on the double bond, and the molecules will bounce instead of react.
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One way to limit iron corrosion is to coat the iron with a metal that:
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A 360. g iron rod is placed into 750.0 g of water at 22.5°C. The water temperature rises to 46.7°C. What was the initial tempera
Grace [21]

Answer: The initial temperature of the iron was 515^0C

Explanation:

heat_{absorbed}=heat_{released}

As we know that,  

Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})

m_1\times c_1\times (T_{final}-T_1)=-[m_2\times c_2\times (T_{final}-T_2)]         .................(1)

where,

q = heat absorbed or released

m_1 = mass of iron = 360 g

m_2 = mass of water = 750 g

T_{final} = final temperature = 46.7^0C

T_1 = temperature of iron = ?

T_2 = temperature of water = 22.5^oC

c_1 = specific heat of iron = 0.450J/g^0C

c_2 = specific heat of water= 4.184J/g^0C

Now put all the given values in equation (1), we get

-360\times 0.450\times (46.7-x)=[750\times 4.184\times (46.7-22.5)]

T_i=515^0C

Therefore, the initial temperature of the iron was 515^0C

4 0
3 years ago
Electrons can jump between energy levels but can never be found in what energy level
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Answer:

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2 years ago
Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical
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Answer:

2H_2O\rightarrow 2H_2+O_2

Explanation:

Hello there!

In this case, for the reaction by which water is decomposed to molecular hydrogen and oxygen:

H_2O\rightarrow H_2+O_2

It is necessary to perform the inspection balance process since there is a dissimilar number of atoms of oxygen on both sides; therefore, by putting a 2 on water we balance oxygen:

2H_2O\rightarrow H_2+O_2

But now, there are four hydrogens on the left; therefore, we put a 2 on hydrogen to finally balance it:

2H_2O\rightarrow 2H_2+O_2

And obviously, the coefficient in oxygen is an unwritten 1.

Best regards!

7 0
3 years ago
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