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SSSSS [86.1K]
3 years ago
15

Reactions cannot occur without a certain minimum amount of energy. What is this minimum amount of energy called? A.the activatio

n energy B.the activated complex C.the kinetic energy of reactants D. the potential energy of products

Chemistry
2 answers:
madam [21]3 years ago
7 0
A. the activation energy 
frez [133]3 years ago
6 0

Answer:

The correct answer is option A.

Explanation:

Activation energy is defined as amount of energy given to a chemical system with which results in chemical reaction.Or minimum amount of energy required by the reactants to undergo a chemical reaction.

Activation complex  is a state in a chemical reaction which attained at very high temperature. It is an intermediate  state between reactant and product.

The kinetic energy of reactants is the energy due to motion of the reactant molecules.

The potential energy of products is the chemical energy possessed in the bonds of the product.

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The reaction P4 +502P4010 + 712 kcal is
igor_vitrenko [27]

Answer:

The reaction is exothermic (option 4)

Explanation:

P4 + 5O2 → P4O10 + 712 kcal

In chemical reactions heat can be absorbed or released:

⇒in the first case, when heat is absorbed, this is called an endothermic reaction. The products have more energy than the reactants. The reaction requires or absorbs energy from it's surroundings.  That means  that in this reaction energy , in the form of heat, will be absorbed by the reactants.

⇒ when heat is released, this is called an exothermic reaction. The reactants have more energy than the products. The reaction gives or releases energy to it's surroundings.  That means  that in this reaction energy , in the form of heat, will be released by the reactants.

in the case of P4 + 5O2 → P4O10 + 712 kcal

We notice that on the right side, which is the product side, there is a positive amount of energy. This means that the energy is released by the the reactants, in this reaction. <u>The reaction is exothermic.</u>

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3 years ago
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Answer:

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The image below shows two nitrogen atoms. For these two atoms to form a stable molecule, N2, how many electrons would have to be
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There are six electrons in the covalent bonds.

Two N atoms would be :N:· + ·:N:
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in the periodic table, a set of properties repeats from row to row

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