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allochka39001 [22]
3 years ago
14

Which statement correctly describes protons? They have no charge and are present in the nucleus of an atom. They have a negative

charge and travel around the nucleus of an atom. They have a positive charge and travel around the nucleus of an atom. They have a positive charge and are present in the nucleus of an atom along with the neutrons.
Chemistry
2 answers:
Kamila [148]3 years ago
5 0
AnswerD is the correct answer. for your information, A describes the neutrons and B describes the electrons. C is wrong.
tatiyna3 years ago
5 0
The last sentence is true abt proton
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Answer:

Primary structure is the correct answer.

Explanation:

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The enthalpy of combustion for octane (C8H18(l)), a key component of gasoline, is -5,074 kJ/mol. This value is the Delta. Hrxn f
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Combustion can be defined as the reaction of a compound with oxygen. The enthalpy of combustion of octane is \Delta H_{\rm rxn} for \rm C_8H_{18}\;+\;25\;O_2\;\rightarrow 8\;CO_2\;+\;9\;H_2O.

<h3>What is the enthalpy of reaction?</h3>

The enthalpy of reaction is the amount of heat energy absorbed or lost by the molecules in the chemical reaction.

The enthalpy of combustion is the amount of heat energy released by the compound in the reaction with oxygen.

The reaction in which heat is liberated with the reaction of a compound with oxygen has an enthalpy of combustion, equivalent to the enthalpy of reaction.

The combustion of octane can be given as:

\rm C_8H_{18}\;+\;25\;O_2\;\rightarrow 8\;CO_2\;+\;9\;H_2O

Thus, the reaction has combustion energy equivalent to the enthalpy of the reaction is \rm C_8H_{18}\;+\;25\;O_2\;\rightarrow 8\;CO_2\;+\;9\;H_2O. Thus, option B is correct.

Learn more about enthalpy of reaction, here:

brainly.com/question/1657608

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What is the answer of these compound
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CO32-, Molecular Formula. 

Hope this helps. :)
8 0
2 years ago
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