A national convention occurs every four years. Who is responsible for organizing this event? A. national party chairperson B. speaker of the house C. majority leader D. vice president

Answer:

             The cation is smaller.

Explanation:

                    Electronic configuration of Lithium atom is as follow,

                                                          Li =  1s², 2s¹

while, Electronic configuration of Lithium cation is as follow,

                                                         Li⁺  =  1s²

The Lithium Cation is smaller because,

i)   Less Energy Levels:

                                     As depicted in electronic configurations, the valence shell of Li atom is 2 while, that of Li cation is 1 as a result the distance of valence electrons and nucleus has decreased resulting in small size.

ii)   Less Shielding Effect:

                                        The effect in which the core electrons shield the valence electron from nucleus pull is known as shielding effect. In Li cation there are no core electrons hence, the electrons are more attracted towards proton resulting in small size.

iii)   More Nuclear Charge:

                                       In Li atom there are three protons and three electrons so, three protons attract three electrons and the game run some what balance. But, as tone electron is lost in Li Cation, the proton side gets stronger and apply more pull on electrons and made them more closer to the nucleus resulting in size decrease.

The correct statement is: The cation is smaller.

In a neutral lithium atom, there are three electrons surrounding the nucleus, distributed in different energy levels or electron shells. These electrons repel each other due to their negative charges, creating an electron-electron repulsion that tends to spread them out and increase the size of the atom.

When a lithium atom loses one electron to form a cation, it becomes positively charged. This loss of an electron reduces the electron-electron repulsion within the atom. With fewer electrons, the remaining electrons experience a stronger attraction towards the nucleus, since the positive charge of the nucleus is no longer balanced by the negative charge of the lost electron.

As a result, the remaining electrons are drawn closer to the nucleus in the lithium cation. The reduction in electron-electron repulsion and the increased attraction between the electrons and the nucleus cause the cation to have a smaller size compared to the neutral atom.

Hence, the lithium cation (Li⁺) is smaller than the lithium atom (Li)

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Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 5 moles oxygen / 1 mole propane. The correct option is option C among all the given options.

What is mole?

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

The balanced equation for the given chemical reaction can be given as

CH + 5O 3CO + 4HO

Stoichiometry represents the number of number of moles of reactant and products. The mole ratio between oxygen and propane is 5:1. the correct option isoption 2.

Therefore, 5 moles oxygen / 1 mole propane. The correct option is option C among all the given options.

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Answer:

The answer to your question is    CH₄ + 2O₂  ⇒  CO₂  +  2H₂O

Explanation:

Data

Methane = CH₄

Oxygen = O₂

Process

A combustion reaction is a kind of chemical reaction in which an organic compound reacts with oxygen to generate water and carbon dioxide.

Chemical reaction

                   CH₄ + O₂  ⇒  CO₂  +  H₂O

             Reactants   Elements    Products

                    1                   C                1

                    4                  H                2

                    2                  O                3

Balanced chemical reaction

                   CH₄ + 2O₂  ⇒  CO₂  +  2H₂O

             Reactants   Elements    Products

                    1                   C                1

                    4                  H                4

                    4                  O                4

Final answer:

The balanced chemical equation for the combustion of methane is CH4 + 2O2 -> CO2 + 2H2O. This equation shows that a methane molecule reacts with two oxygen molecules to produce a carbon dioxide molecule and two water molecules while maintaining a balance as per the Law of Conservation of Mass.

Explanation:

The combustion of methane occurs when methane gas (CH4) combines with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). This reaction can be represented by the following balanced chemical equation:

CH4 + 2O2 -> CO2 + 2H2O

This means that one molecule of methane reacts with 2 molecules of oxygen to produce one molecule of carbon dioxide and two molecules of water. The chemical equation is balanced, meaning that the number of atoms of each element is the same on both sides of the equation as required by the Law of Conservation of Mass.

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Answer: With a positively charged nucleus.

Explanation:

B, I just took the test and the correct answer is b. Cheap doesn't always equal quality.