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DIA [1.3K]
3 years ago
9

Select the correct answer. Why does every chemical reaction require a certain amount of activation energy? A. Energy is released

when the reactants begin to react. B. Energy lost to the environment during the reaction must be replaced. C. Forming the activated complex requires energy. D. The products have more potential energy than the activated complex. E. The reactants have less potential energy than the products.
Chemistry
1 answer:
horsena [70]3 years ago
5 0

Answer:

<u>The answer is</u>: <em>B. </em><em>Energy lost to the environment during the reaction must be replaced.</em>

Explanation:

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8 0
3 years ago
What are the boiling point and freezing point of a 0.40 m solution of sucrose in ethanol?
dimulka [17.4K]

The solution would be like this for this specific problem:

For freezing point

Tf, soln= -114.6-(i*Kf*m) 
Tf, soln= -114.6 - (1*1.99*0.40) 
Tf= -115.4 C 

 

For boiling point:

Tb=78.4+(i*Kf*m) 

Tb=78.4+(1*1.99*.40) 
Tb= 79.2 C 

So the boiling and freezing point of a 0.40m solution of sucrose in ethanol is 79.2 C and  -115.4 C respectively.

4 0
4 years ago
What is the process that is commonly used to assure desirable characteristics, or traits, in the offspring of animals?
valina [46]
A. Selective breeding
5 0
3 years ago
ICl has a higher boiling point than Br2. What is the best explanation for this?
Burka [1]

Answer:

b. ICl experiences dipole-dipole interactions

Explanation:

The molecule with the <em>stronger intermolecular forces</em> will have the higher boiling point.

In Br₂, the Br-Br bond has a <em>dipole moment of zero</em>, because the two atoms are identical.

In ICl, the I-Cl bond, has two different atoms. One must be more electronegative than the other, so there will be a <em>non-zero bond dipole</em>.

ICl will have the higher boiling point.

a is <em>wrong</em>. Br₂ is nonpolar, so it has no dipole-dipole interactions.

c is <em>wrong</em>. Br₂ cannot form hydrogen bonds, because there is no hydrogen.

d is <em>wrong</em>. ICl has dipole-dipole interactions.

8 0
3 years ago
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