plz help very many points so there better be an answer if u say i just need the points sorry i will report u.

The maximum number of electrons that may occupy the third electron energy level (n=3) is 18.

Electrons are present in the electron shells or energy levels surrounding the atomic nucleus.

The electrons closest to the nucleus, in the first energy level or shell, have the lowest energy.

Electrons further from the nucleus have more energy and are found in higher energy levels or shells.

The electron configuration of each element indicates the number of electrons present in each energy level or shell.

There is a maximum number of electrons that each energy level or shell can hold.

According to the Aufbau principle and the Pauli exclusion principle, the maximum number of electrons that can occupy the third energy level is 18.

This level has three sublevels or orbitals: s, p, and d.

The s sublevel can hold up to 2 electrons, the p sublevel can hold up to 6 electrons, and the d sublevel can hold up to 10 electrons.

So, the total maximum number of electrons that can occupy the third energy level (n=3) is 2 + 6 + 10 = 18.

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Answer:

To determine if the given chemical equation is carbon balanced, we need to count the number of carbon atoms in the reactants and compare it to the number of carbon atoms in the products.

Reactants:

2 C2H6 -> 4 carbon atoms

Products:

4 CO2 -> 4 carbon atoms

Since the number of carbon atoms on the reactant side is equal to the number of carbon atoms on the product side, we can conclude that the given chemical equation is carbon balanced.

which of these has 170 degree in fahrenheit and

Answer:

we know the formula to convert Fahrenheit to Celsius =(F-32)(5/9)

=(107-32)(5/9)

=(75)(5/9)=375/9=41.6degree Celsius

The answer is Na. The first ionization energy is the energy required to remove one electron from a neutral atom in the gas phase. It generally increases as you move across a period from left to right, and decreases as you move down a group.

Among the given choices, the element with the smallest first ionization energy is sodium (Na), since it is located in the first group (also known as the alkali metals) of the periodic table and has only one valence electron that is relatively far from the nucleus. The other elements have higher first ionization energies because they have more valence electrons or they are closer to having a stable electron configuration.

Therefore, the correct answer is: Na.

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The activation energy of the reaction is 40 Kj/mol

Activation energy is the amount of energy required for a chemical reaction to occur. In other words, it's the minimum energy that molecules must possess in order to react with one another. The activation energy can be thought of as the height of a hill that the reactants must climb in order to reach the other side.

The activation energy is a key factor in determining the rate of a chemical reaction. Generally, reactions with higher activation energies occur more slowly than those with lower activation energies.

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At a pH of 7, the charged groups present in glycine are -NH3+ and -COO−.

So, the correct answer is D) A and B.

At this pH, the amino group (-NH3+) is positively charged, and the carboxyl group (-COO−) is negatively charged, resulting in a zwitterionic form of glycine. The amino group (-NH2) on glycine can act as a base and pick up a hydrogen ion (H+) to become positively charged (-NH3+), while the carboxyl group (-COOH) can act as an acid and donate a hydrogen ion to become negatively charged (-COO-).

Therefore, at pH 7, the amino group is protonated to become -NH3+ and the carboxyl group is deprotonated to become -COO-. The net charge of glycine at pH 7 is neutral, as the positive and negative charges cancel each other out.

The chemical structure of glycine at pH 7 can be represented as H3N+CH2COO-.

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Answer:

C(s)+CO₂(g)→2CO(g)

Explanation:

Basically you’re adding the compounds until they’re equal on both sides

Answer:

Explanation:

I'm not sure what is being asked, not the units of "1.5."  I don't know of potassium "ioxicide."  Was "dioxide" intended?

I'll assume the question is "What is the concentration, in Molar, of 1.5g of potassium dioxide in 150cm^3 of water (150cm^3 is 150 ml).

The molar mass of K2O, potassium dioxide, is 94.2 g/mole.  1.5g is (1.5g/94.2 g/mole) or 0.0159 moles of K2O.  The definition of Molar is moles/liter.  So take the moles of K2O and divide by the liters, which is 0.150L in this case.

(0.0159 moles K2)/0.150 L  = 0.106 M K2O

Isotopes are atoms that belong to the same element: 11 protons, 10 neutrons, 11 electrons, 13 protons 14 neutrons, and 13 electrons

An isotope is one of two or more atom types of a chemical element that share the same atomic number, position on the periodic table, chemical behavior, and physical properties, but differ in atomic mass. One or more isotopes can be found in any chemical element. The number of protons in an atom's nucleus is the first criterion for determining its identity and labeling.

The observation that all atoms with the same atomic number have roughly the same chemical properties—if not exactly the same—gives this atomic number its significance. The symbol Z is typically used to represent this number. An ingot of pure uranium, for instance, only contains atomic number 92 atoms. Each atomic number has a place on the periodic table of elements, and each of these places is labeled with the element's common name, like calcium, radon, or uranium.

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Answer:

Gabriella is slowing down at the same rate that Kendall is speeding up, and Franklin is not accelerating.

Gabriella is slowing down at the same rate that Kendall is speeding up, and Franklin is not accelerating. Hence option B is correct.

Acceleration is defined as the speed at which an object's velocity changes over time. The rate at which an item changes its velocity is known as acceleration, a vector quantity. If an object's velocity is changing, it is accelerating. Acceleration can be expressed as

Acceleration = Displacement / Time

Velocity is defined as the pace at which an item changes position while moving in one direction, as seen from a certain point of view and as measured by a specific unit of time. Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is travelling along a path.

Thus, Gabriella is slowing down at the same rate that Kendall is speeding up, and Franklin is not accelerating. Hence option B is correct.

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The enzyme would operate at one-quarter of its maximum rate at a substrate concentration of 0.00020825 m.

This can be solved using Michaelis-Menten equation, The Michaelis-Menten equation relates the initial velocity of an enzyme-catalyzed reaction (v) to the substrate concentration ([S]), the maximum velocity (Vmax), and the Michaelis constant (Km): v = (Vmax [S]) / (Km + [S]) When the enzyme operates at one-quarter of its maximum rate, the initial velocity is 0.25 Vmax:

0.25 Vmax = (Vmax [S]) / (Km + [S])

Solving for [S], we get:

[S] = (0.25 Km) / (1 - 0.25)

[S] = 0.0833 Km

Substituting the given values of Vmax = 102.5 m/min and Km = 0.0025 m, we get:

[S] = 0.0833 × 0.0025 m

[S] = 0.00020825 m

Therefore, the enzyme would operate at one-quarter of its maximum rate at a substrate concentration of 0.00020825 m.

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Answer:

Due to erosion

Explanation:

When a pebble breaks off from a greater piece it is rough. After being weathered down and constantly hit against by other masses, the side will wear down and smoothen out

The mixing of potassium chloride with liquid bromine will produce potassium bromide.

When potassium chloride (KCl) is mixed with liquid bromine (Br₂), a chemical reaction occurs. Bromine is a halogen, and it is more reactive than chlorine. During the reaction, bromine replaces chlorine in potassium chloride, resulting in the formation of potassium bromide (KBr).

The balanced chemical equation for the reaction is:

2 KCl + Br₂ → 2 KBr + Cl₂

In this reaction, each potassium chloride molecule reacts with one molecule of bromine to form two molecules of potassium bromide and one molecule of chlorine gas. The reaction is a redox reaction, where bromine is reduced from its elemental form (Br₂) to bromide ions (Br⁻), and chlorine is oxidized from chloride ions (Cl⁻) to elemental chlorine (Cl₂).

Potassium bromide (KBr) is a white crystalline solid that is soluble in water. It is commonly used in various applications, including as a medication for epilepsy and in photographic processes.

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Answer: 1.45M

Explanation:

The definition of molarity is moles/liter.  The neutralization of NaOH with HI is:

HI + NaOH = NaI  + H2O

One mole of HI reacts with 1 mole of NaOH.  We'll assume this is a titration reaction and that the 10.00ml sample of NaOH contains the same number of moles as the 56.75ml of 0.256M HI.

Moles HI:  (0.256 moles/liter)*(0.05675 L) = 0.01453 moles HI

That means we muct have 0.01453 moles NaOH in 10.0ml of NaOH solution.

(0.01453 moles NaOH)/(0.010L) = 1.45 M

==

Another approach is to use the relationship M1V1 = M2V2, which is useful for titrations (M is concentration and V is volume):

We want M2, so rearrange:  M2 = M1V1/V2

M2 = (0.256M)*(56.75ml)/(10.0ml)

M2 = 1.45M

Answer:

Presence of an Electrolyte

Metal Surface

Oxygen or Other Oxidizing Agent

Difference in Potential

Electrochemical Pathway

Explanation:

Explanation:

In order to go from mass of magnesium to atoms of magnesium, we have to do two things:

   Convert mass of Mg to moles of Mg using the molar mass of Mg as a conversion factor

   Convert moles of Mg to atoms of Mg using Avogadro's number (6.02×1023) as a conversion factor

Step 1:

Before we start, I should note that the molar mass of Mg is 24.31gmol. We can go from mass to moles using dimensional analysis. The key to dimensional analysis is understanding that the units that you don't need any more cancel out, leaving the units that are desired:

48.60g

×1mol24.31g

=2.00mol

Step 2:

We'll use this relationship:

www.sprinklernewz.uswww.sprinklernewz.us

Using the moles of Mg that we just obtained, we can use Avogrado's number to perform dimensional analysis in order to cancel out units of mol to end up with atoms of Mg:

2.00mol

×6.02×1023atoms1mol

=1.204×1024atoms

Thus, 48.60g of Mg is equivalent to 1.204×1024atoms

Hope this helped :)

The molarity of the HCl 0.104 M

Molarity of a solute is defined as the ratio of number of moles of solute to the volume of solution (L). Solute molarity is sometimes omitted by enclosing the solute chemical formula in square brackets. For example, the concentration of chloride ions in solution can be written as  [Cl⁻]. Molarity allows you to convert between the volume of a solution and the moles (or mass) of a solute.

For the given case,

HCl + NaOH --> NaCl + H2O

Since,

M₁V₁ = M₂V₂

M₁ = concentration of NaOH

V₁ = volume of NaOH

M₂ = concentration of HCl

V₂ = volume of HCl

Substitute the given values in the equation mentioned above:

26.18 × 0.0995 = M₂ × 25.00

2.60491 = 25 M₂

M₂ =  0.104 M

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The number of molecules of SO2 present in a sample of gas that contains 775 moles of smokestack gas is 4.66 x 10²⁶.

Given: Number of moles of smokestack gas = 775 moles

We need to determine the number of molecules of SO2 present in this sample of gas.

1. First, we'll need to identify what gas is present in the smokestack gas. Since the problem doesn't specify, we'll assume that SO2 is the gas we are interested in.

2. Calculate the molar mass of SO2 :

S = 32.06 g/molO2 = 15.999 g/mol(2 O atoms per molecule)

Molar mass of SO2 = 32.06 g/mol + 2(15.999 g/mol) = 64.06 g/mol

3. Use Avogadro's number to convert from moles of SO2 to molecules of SO2.

Avogadro's number is equal to 6.022 x 10²³ molecules/mol.

Number of molecules of SO2 = Number of moles of SO2 x Avogadro's number

Number of molecules of SO2 = 775 mol x 6.022 x 10²³ molecules/mol = 4.66 x 10²⁶ molecules of SO2

Therefore, the number of molecules of SO2 = 4.66 x 10²⁶.

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Answer:

claim

Explanation:

CLAIM: The newt population became more poisonous because the snakes in this environment caused poison to be an adaptive trait, and Poison Level 10 is the most common because the newts with this trait were able to live longer and reproduce more than other newts.

The free energy is always negative and the dissolution is feasible when enthalpy is negative and entropy is positive. Option A

Water is known as the universal solvent. Water is a polar substance hence it is often used to dissolve polar substances. It has a dipole and being that there is a high degree of electronegativity difference between the oxygen and the hydrogen atoms in water, it is feasible that the degree of hydrogen bonding between the two is high.

We know that dissolution is favored when there will be an increase in entropy as a result of that, that is; if more particles will appear. Now we know that ΔG = ΔH - TΔS.

Given the equation above, it then follows that the free energy is always negative and the dissolution is feasible when enthalpy is negative and entropy is positive. Option A

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The chemical in the catabolism of glucose that enters the mitochondria is pyruvat.

In the catabolism of glucose, the process begins with glycolysis, which takes place in the cytoplasm of the cell. During glycolysis, glucose is broken down into two molecules of pyruvate through a series of enzymatic reactions. Pyruvate is a three-carbon compound (C₃H₄O₃) and serves as an intermediate product in glucose metabolism.

After glycolysis, if oxygen is available, pyruvate enters the mitochondria, where further oxidation occurs through a process called aerobic respiration. In the mitochondria, pyruvate undergoes decarboxylation, producing acetyl CoA, which then enters the citric acid cycle (also known as the Krebs cycle). The citric acid cycle generates high-energy electrons, which are then used in the electron transport chain to produce ATP through oxidative phosphorylation.

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At 300 K, some of the donors will ionize, releasing electrons into the conduction band. The concentration of extrinsic conduction electrons can be calculated using the equation \(n = N_D * exp(-E_D/kT),\) where n is the concentration of electrons, \(N_D\) is the donor concentration, \(E_D\) is the binding energy of the donors, k is Boltzmann's constant, and T is the temperature in Kelvin.

(b) At 300 K, some electrons will also be thermally excited into the conduction band, creating intrinsic conduction. The concentration of intrinsic conduction electrons can be calculated using the equation \(n_i = N_C * exp(-E_G/2kT)\) , where \(n_i\) is the concentration of electrons, \(N_C\) is the effective density of states in the conduction band, and \(E_G\) is the bandgap energy.

(c) The contribution of intrinsic conduction is generally smaller than that of extrinsic conduction, as the concentration of dopants is usually much higher than the intrinsic carrier concentration at room temperature.

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If carbonite existed,  its likely chemical formula will be CO₂²⁻.

The carbonite is liquid substance that is made from the carbon and the oxygen. the carbonite could change in the solid form through rapid freezing. carbonite is used to freeze the good for preservation is called as the carbon freezing. the carbonite is the blasting explosive. so, the carbon freezing is the process in which the liquid carbonite is frozen into the solid state.

Thus, in the movie star wars episode v: the empire strikes back, the character han solo is frozen in the fictional material, carbonite. if carbonite existed,  its likely chemical formula will be CO₂²⁻.

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Answer:

C. ion concentrations are no longer changing and the voltage is 0.

Explanation:

Electrochemical cells are a device that generates current from redox reactions. In the cell, the equilibrium is reached when the voltage drops to 0. Thus, option C is correct.

An electrochemical cell is a voltaic device that uses chemical energy to generate electrical energy and vice versa. It is of two types electrolytic and galvanic cells depending on the energy it produces.

The electrochemical cell comprises two electrodes namely an anode and cathode, a salt bridge or the porous barrier, and an external connection.

The connection shows the voltage that indicates the equilibrium. When the current flow stops and the voltage reaches zero, the electrochemical cell is said to be in equilibrium.

Therefore, no change in the ionic concentrations and zero voltage indicates equilibrium.

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Answer:

very

Explanation:

really salty

Answer: 35 grams of dissolved salts in each liter

Explanation:

It is written as 35 ‰ The normal range of ocean salinity ranges between 33-37 grams per liter (33‰ - 37‰).

The electron configuration of an atom describes the arrangement of its electrons in various energy levels and orbitals. Electrons occupy the lowest available energy levels and follow certain rules.

a. Chlorine has 17 electrons. Its electron configuration is \(1s_2 2s_2 2p_6 3s_23p_5\) . The ion that chlorine most commonly forms is the chloride ion, \(Cl^-\). This ion gains one electron to achieve a noble gas configuration. The electron configuration of \(Cl^-\) is the same as that of argon: \(1s_2 2s_2 2p_6 3s_2 3p_6\).

b. Oxygen has 8 electrons. Its electron configuration is \(1s_2 2s_2 2p_4\). The ion that oxygen most commonly forms is the oxide ion, \(O_2^-\). This ion gains two electrons to achieve a noble gas configuration. The electron configuration of \(O_2^-\)is the same as that of neon: \(1s_22s_22p_6\).

c. Aluminum has 13 electrons. Its electron configuration is \(1s_2 2s_2 2p_6 3s_2 3p_1\) The ion that aluminum most commonly forms is the aluminum ion, \(Al_3^+\). This ion loses three electrons to achieve a noble gas configuration. The electron configuration of \(Al_3^+\) is the same as that of neon: \(1s_2 2s_2 2p_6\).

d. Barium has 56 electrons. Its electron configuration is \(1s_2 2s_2 2p_6 3s_2 3p_6 4s_2 3d_10 4p_6 5s_2 4d_10 5p_6 6s_2\). The ion that barium most commonly forms is the barium ion,\(Ba_2^+\). This ion loses two electrons to achieve a noble gas configuration. The electron configuration of \(Ba_2^+\) is the same as that of xenon: \(1s_2 2s_2 2p_6 3s_2 3p_6 4s_2 3d_10 4p_6\).

e. Selenium has 34 electrons. Its electron configuration is \(1s_2 2s_2 2p_6 3s_2 3p_6 4s_2 3d_10 4p_4\). The ion that selenium most commonly forms is the selenide ion, \(Se_2^-\). This ion gains two electrons to achieve a noble gas configuration. The electron configuration of \(Se_2^-\)is the same as that of argon: \(1s_2 2s_2 2p_6 3s_2 3p_6\).

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The freezing point of the solution is - 2.15.

The freezing point is the point at which a liquid is changed to solid. We can use the formula;

ΔT = K m I

ΔT = temperature change

K = freezing constant of benzene

m = molality

i = Van't Hoff factor

Now;

ΔT =  5.12°C/m * 0.655 m  * 1

ΔT = 3.35°C

ΔT = Freezing point of pure benzene - Freezing point of solution  

Freezing point of solution  = ΔT -  Freezing point of pure benzene

= 3.35°C -  5.5 °C = - 2.15

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Answer:

2.143 degrees celsius

Explanation:

Answer:

500g

Explanation:

Just divide by all the numbers and the one that equals 1.6 is the answer

The maximum amount of nitrous acid that can be produced is 0.304 moles.

The balanced chemical equation for the reaction of nitrogen monoxide (NO) with oxygen (O2) to produce nitrogen dioxide (NO2) is as follows:

\(2 NO + O2 → 2 NO2\)

Nitrous acid (HNO2) can be made by combining nitrogen dioxide and water:

\(HNO2 + H+ NO2 + H2O\)

We can see that it takes two moles of NO to produce two moles of NO2, now we can then react with one mole of water to produce one mole of HNO2. As, we must first determine the number of moles of NO in 1.83 x 1023 molecules, and then use stoichiometry to determine the number of moles of HNO2 that can be produced.

The following is the balanced chemical equation for the reaction of nitrogen monoxide (NO) with oxygen (O2) to produce nitrogen dioxide (NO2):

\(2 NO + O2 → 2 NO2\)

By combining nitrogen dioxide and water, nitrous acid (HNO2) can be produced:

\(+ HNO2 + HNO2 + H2O\)

We can see that two moles of NO are required to produce two moles of NO2, which can then be combined with one mole of water to produce one mole of HNO2. Therefore, we have to calculate the number of moles of NO in 1.83 x 1023 molecules before using stoichiometry to calculate the number of moles of HNO2 that can be produced.

The balanced equation's coefficients represent mole ratios, we can see that 1 mole of NO2 is produced from 2 moles of NO. So the total number of moles of NO2 produced is 0.304 moles. Then, 0.304 moles of NO2 can combine with 0.304 moles of water to form 0.304 moles of HNO2.

As a result, the maximum amount of nitrous acid that can be produced is 0.304 moles.

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