Which brain region or part of the brain is responsible for hearing the sounds of a crowd in a baseball game?

Ionic compounds are created through the gain and loss of electrons. The attraction of the opposing charges causes the two atoms to stick together, forming a strong, long-lasting chemical bond.

Elements can either absorb or lose electrons to attain their closest arrangement as a noble gas. When ions come together to complete the octet, they become more stable. In a reaction with nonmetals, metals normally lose electrons to complete their octet while nonmetals typically receive electrons to do the same. Metal atoms lose electrons from their outer shell when they generate ions, which are positive because they have more protons than electrons. The resultant ions are fully enclosed in their shells. The ions' electrical structure resembles that of a noble gas (group zero element), a whole outer covering. Nonmetals have higher ionization energies and electron affinities than metals, which make it simpler for them to accept electrons and more challenging for them to lose them. Nonmetals are further to the right of metals on the periodic table. They almost make up a whole octet of eight electrons and have more valence electrons.

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The energy of the photon is 3.7 * 10^-19 J while the energy of one mole of the photon is  6.1 * 10^-43 J/mol.

We know that the energy of the photon is the energy that can be obtained from just a mole of the photons that were emitted. Now we are told that what we have is a mixture of argon and mercury vapor used in advertising signs emits light of wavelength 530 nm.

Given;

E = hc/λ

E = energy

h = Plank's constant

c =  Speed of light

λ = wavelength

E = 6.6 * 10^-34 * 3 * 10^8/530 * 10^-9

E =3.7 * 10^-19 J

For one mole of the photon;

3.7 * 10^-19 J * 1 photon/6.02 * 10^23

= 6.1 * 10^-43 J/mol

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Answer:

The number of protons, massive, positively charged nuclear particles defines the identity of the nucleus.

Woah. Vocabulary here.

An isotope is any of two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus, or different atomic weight. There are 275 isotopes of the 81 stable elements, in addition to over 800 radioactive isotopes, and every element has known isotopic forms. Isotopes of a single element possess almost identical properties.

Helium is usually defined as an inert, gaseous element present in the sun's atmosphere and in natural gas, and also occurring as a radioactive decomposition product, used as a substitute for flammable gases in dirigible balloons. Symbol: He; atomic weight: 4.0026; atomic number: 2; density: 0.1785 g/l at 0 °C and 760 mm pressure.

Explanation:

The number of protons, massive, positively charged nuclear particles, gives Z, the atomic number, which defines the identity of the nucleus.

Z=1, "hydrogen",Z=2, "helium",Z=3, "lithium",...........Z=21, "scandium".

The nucleus may contain various numbers of neutrons, massive, neutrally charged nuclear particles, which gives to the existence of isotopes.

For hydrogen, [tex]Z=1[/tex] by defintion. That is there is a proton in all hydrogen nuclei. Some hydrogen nuclei contain 1 neutron to give the deuterium isotope, [tex]^2H[/tex] ; an even smaller number of hydrogen nuclei contain 2 neutrons, to give the tritium isotope, [tex]^3H[/tex] ; Most atoms have a number of isotopes in different proportions.

To answer your question, the helium atom has [tex]Z=2[/tex] ; i.e. there are 2 nuclear protons, which is what defines the atom as helium. The most common isotope of helium is [tex]^4He.^3He[/tex] and [tex]^5He[/tex] re known with vanishingly small abundances, and half lives.

This video discusses how to determine the number of subatomic particles in C-12 , C-14 , H-1 , H-2 and H-3 .

Thanks.

Neutral atom is a state when the atom doesn't possess any negative or positive charge on it.

Atom is made up of electrons, protons and neutrons.

Electrons are negatively charged, protons are positively charged and neutrons are neutral.

For any component: Proton count equals atomic number

Number of protons plus number of electrons equals the atomic number.

The number of neutrons is equal to the atomic number-mass number.

To balance the atom and make it neutral it is necessary that the electrons and protons are equal to neutrons.

For example, if we take Helium, it has 2 electrons, 2 protons and 2 neutrons, thus it is said to be a neutral atom.

Therefore, the necessary components for a neutral atom are electrons, protons and neutrons.

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The formula for the reaction is given as; [tex]ZnSO_{4} + 2LiNO_{3} ----- > Zn(NO_{3} )_{2} + Li_{2} SO_{4}[/tex]

We know that a reaction occurs when there is a combination between two or more reactants. When the reaction occurs, there is a change in the reactans and we obtain the products. There would be a recombination of the reactants and then we would get the products of the reaction.

In this case, we have to find the formula reaction for the equation that has the word equation; lithium nitrate + zinc sulfate -> lithium sulfate + zinc nitrate. This would be done by writing the symbols of the reactants and products and then balancing the reaction equation as shown.

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The inside of a cell, what is meant when the surrounding solution is is called hypertonic solution.

What is hypertonic solution?

When a cell is immersed in a hypertonic solution, there is a net flow of water out of the cell, resulting in volume loss. A solution is hypertonic to a cell if its solute concentration exceeds that of the cell, and the solutes are unable to penetrate the membrane.

A hypertonic solution is a solution that has a higher concentration of solutes on the exterior of a cell than on the inside of a cell.

A hypertonic solution has a higher osmotic pressure than another solution. In other terms, a hypertonic solution has a higher concentration or quantity of solute particles outside a membrane than inside it.

The traditional example used to describe tonicity is red blood cells. When the concentration of salts (ions) inside the blood cell is the same as the concentration outside, the solution is isotonic with respect to the cells, and they resume their usual form and size.

If there are less solutes outside the cell than inside it, as if red blood cells were placed in fresh water, the solution (water) is hypotonic in comparison to the interior of the red blood cells. As water rushes into the cell to try to equalise the concentrations of the interior and outer solutions, the cells enlarge and may explode.

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In an E2 reaction, the most frequent reactants are alkyl halides and alcohols.

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Answer:

In syn elimination, the base attacks the β-hydrogen on the same side as the leaving group.

Explanation:

E2 Stereochemistry

In anti elimination, the base attacks the β-hydrogen on the opposite side of the leaving group. It has been experimentally determined that E2 elimination occurs through an anti mechanism.

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A biodiverse environment, one with many distinct species, is frequently more adaptable to changing conditions and can endure major shocks. Each species has a distinct purpose in the coral reef ecosystem.

Better biodiversity contributes to greater stability in ecosystems, animals, and individuals. Species with significant genetic diversity and diverse populations that are adapted to a wide range of environments, for example, are more likely to withstand disturbances, illness, and climate change.

Biodiversity, also known as biological diversity, refers to the variety and variability of life on Earth. Biodiversity is a measure of genetic, species, and ecological variation.

Soil fertilization, nutrient recycling, pest and disease controls, erosion control, and crop and tree pollination are all provided by biodiversity.

High biodiversity is preferable to low biodiversity because high biodiversity ecosystems are better equipped to maintain equilibrium and be productive.

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The law of conservation of mass explains clearly to me that a reaction between zinc and hydrochloric acid can never produce aluminum oxide as the product formed was not part of the reaction.

The law of conservation of mass or matter state matter is neither created not destroyed but changes from one form to another. Applying this to the task above, when zinc combine with hydrochloric acid, it forms zinc chloride and librate hydrogen gas.

The chemical equation is given below:

Zn (s)+2HCl(aq) → ZnCl₂(g) H₂O

So therefore, we can confirm that matter can neither be created not destroyed in a chemical reaction.

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The electron geometry or shape is greatly determined by the electron pair repulsion around the central atom.

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Answer: B

Explanation:

According to the Heisenberg Uncertainty Principle, the statement that is inaccurate is A certain electron located in the 3d ¹0 orbital has a speed of 1.6 x 106 m/s. The correct option is B.

The uncertainty principle, commonly known as Heisenberg's uncertainty principle, refers to any of a number of mathematical inequalities that state a basic cap on how precisely specific pairings of a particle's physical properties, known as complementary variables, may be predicted.

According to the Heisenberg uncertainty principle, it is impossible to simultaneously estimate with high precision an electron's momentum and position.

Therefore, the correct option is B. A certain electron located in the 3d ¹0 orbital has a speed of 1.6 x 106 m/s.

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The volume of a mole of gas molecules at STP is 22.4 L, so time is 21.3 min.

calculation:-

10.0 L

then has

n' = 10.0/22.4 moles  

The total energy released is then

Et= (10.0/22.4)* 286 kJ  

Et = 127.678 KJ

Power*time = energy, so time = energy/power

Power = 100W

Power = 100 J/s

T= 127.6785kJ/100J/s = 1277 sec

T = 1276.78sec/60min = 21.3 min

This heat can melt both the lamp holder and the cable insulation. When this happens, it can put you at risk of arc flash and even lead to a property fire. Listening times for FM and DAB have been found to be up to 11 times longer than for AM and DTV. As a result, we also calculated the power consumption per device hour to determine the energy intensity of each platform.

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Ionic formula for :

1) strontium chloride : it is an ionic compound .

formula : SrCl₂

2) cesium selenide :

formula : Cs₂Se

3) calcium astatine:

ionic formula : CaAt₂

4) radium polonide :

formula : RaPo

5) gallium fluoride :

ionic formula : GaF₃

6) scandium(III) bromide :

formula : ScBr₃

7) chromium(III) oxide :

formula : Cr₂O₃

8) strontium iodide:

formula : SrI₂

9) lithium arsenide :

formula : Li₃As

10) Aluminum nitrate :

formula : Al(NO₃)₃

Thus, the ionic formula for the following compounds are , Ionic formula for :

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The oxidation state of Ca in CaSO₄ is +2. The charge of the whole group SO₄ is -2. The charge of S is +6 and that of O is -2.

The oxidation state of a species is the numerical charge it possess. Thus, it is the number of electrons the element lost or gained. The total charge of a compound will be zero and every compound tends to exist as neutral.

The total charge of the compound CaSO₄ is zero and that of SO₄ is -2. Hence, to neutralize that Ca lose 2 electrons and form in +2 oxidation state.

The charge of one oxygen is -2. Here we have 4 oxygens and the total charge of all oxygens is -8 in the group SO₄.

Now, the charge of S = (-2) - (-8) = +6. Hence, the oxidation state of sulphur is +6.

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The empirical formula of the oxide is Cu₂O

We'll begin obtaining the mass of the oxide, copper and oxygen. This is shown below:

Mass of oxide = (Mass of container + copper oxide) - (Mass of container

Mass of oxide = 26.97 - 25.61

Mass of oxide = 1.36 g

Mass of copper = (Mass of container + copper) - (Mass of container)

Mass of copper = 26.82 - 25.61

Mass of copper = 1.21 g

Mass of oxygen = (Mass of oxide) - (Mass of copper)

Mass of oxygen = 1.36 - 1.21

Mass of oxygen = 0.15 g

Finally, we shall determine the empirical formula of the oxide. Details below

Divide by their molar mass

Cu = 1.21 / 63.55 = 0.0190

O = 0.15 / 16 = 0.009375

Divide by the smallest

Cu = 0.0190 / 0.009375 = 2

O = 0.009375 / 0.009375 = 1

Thus, the empirical formula of the oxide is Cu₂O

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Complete question:

An oxide of copper was reduced to form copper metal by reaction with hydrogen. Use the data in the table to find the empirical formula of this oxide of copper.

Table reads as follows:

Container – 25.61g

Container + copper oxide (before reaction) – 26.97g,

Container + copper (after reaction) – 26.82g.

Answer: CH 2 0

Explanation:

The acceptable range of hardness is (70 - c; 70 c), then the value of c is  5.88.

The normal distribution, sometimes referred to as the Gaussian distribution, is a probability distribution that is symmetric about the mean and demonstrates that data that are close to the mean are more likely to occur than data that are far from the mean.

P(70-c  <  X <  70+c) = 0.95

By using z score formula,

On the normal standard distribution, we can identify two values that add up to 0.95 of the values in the middle. In this instance, the two values are:

[tex]z_{crit}[/tex] = ±1.96{tex} < /p><p>

[tex]z_{crit}[/tex] = {tex}P(-1.96 < Z < 1.96)

[tex]z_{crit}[/tex] = 0.95

we have,

-1.96 = [tex]\frac{(71-c)-71}{3}[/tex]

value of c,

-1.96 × 3 = -c, c = 5.88

1.96 = [tex]\frac{(71+c)-71}{3}[/tex]

value of c,

1.96 × 3 =c,c = 5.88

∴The value of c is 5.88.

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The gradients of the other ions are most likely accounted for by Cotransport protein. The movement of the majority of the ions takes place by the phenomenon of electrochemical gradients.

electrochemical gradients of which some are found on the surface of the membrane and function as electrogenic pumps. While the gradients of some of the ions are mostly accounted for by the co - transport proteins, as these proteins take part in the movement of ions or molecule through a plasma membrane that involves concentration gradient based on the kind of molecules and movement.

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Vomiting and diarrhea , Dehydration can result from severe, acute diarrhea, which is diarrhea that develops suddenly and violently and causes drastic reduction of electrolytes and water.

Dark urine, decrease urination, headaches, weariness, dry skin, impaired skin osmotic pressure, and poor focus are all indicators of dehydration. consume a lot of water or any other fluids to ensure that you are obtaining the recommended amount of fluids each day.

When you use you lose more liquid than you consume, your body becomes dehydrated because it lacks the fluids and water it needs to function normally. Dehydration will occur if lost fluids are not replaced.

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Top left corner diagram represents the correct proportion of 87Rb to its decay product.

Radioactive decay is the process by which unstable nuclei lose energy due to radiation. Substances containing unstable nuclei are considered radioactive. The three most common types of decay are alpha decay, beta decay, and gamma decay, all of which emit one or more particles. If the nuclei are not in the lowest possible energy state, radioactive decay can occur as the nuclei remix and rearrange to find a new stable situation. Different types of radiation are produced by the different ways the nucleus reconfigures itself. The starting isotope is rubidium-87 (⁸⁷Rb for short). It is radioactive, has 37 protons and 50 neutrons (87 nucleons total), decays to Strontium-87, and has a half-life of 49 billion years.

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Partial pressure of O₂ = 0.045 atm

Partial pressure of He = 0.396 atm

According to the definition of partial pressure, each gas that is present in a container full of gases presses against the other gases. Its partial pressure refers to any gas's pressure inside the container.

Mass of O₂ = 40.0 g

Mass of He = 40.0 g

Total pressure = 0.900 atm

Partial pressure of each gas = ?

We will first determine the number of moles.

Number of moles of O₂:

Number of moles = mass/molar mass

Number of moles = 40.0 g/ 32 g/mol

Number of moles = 1.25 mol

Number of moles of He:

Number of moles = mass/molar mass

Number of moles = 40.0 g/ 4 g/mol

Number of moles = 10 mol

Total number of moles = 10 mol + 1.25 mol = 12.5 mol

Mole fraction of O₂ = 1.25 mol/ 22.5 mol = 0.05

Mole fraction of He = 10 mol / 22.5 mol = 0.44

Partial pressure:

Partial pressure of O₂ =  0.05× 0.900 atm = 0.045 atm

Partial pressure of He = 0.44 × 0.900 atm = 0.396 atm

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If the bond energy of the NO bond in NO₂ (g) is 285 kJ/mol,  photon(s) would have sufficient energy to cause this process to occur is 422nm of wavelength.

Bond energy = 285 kJ /mol = 285000 J/mol

E =  285 × 10³ / 6.022 × 10²³ = 4.7 × 10⁻¹⁹ J

now wavelength formula is given as :

= h c / E

where,

h = Planck's constant = 6.626 × 10⁻³⁶ J.s

c = speed of light = 3 × 10⁸ m/s

= (6.626 × 10⁻³⁴ J.s × 3 × 10⁸ m/s ) /  4.7 × 10⁻¹⁹ J

 = 4.22 × 10⁻⁷ m = 422 nm

Thus, If the bond energy of the NO bond in NO₂ (g) is 285 kJ/mol,  photon(s) would have sufficient energy to cause this process to occur is 422nm of wavelength.

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a)  H₂ + F₂ → 2HF is the balanced equation.

b) Conversion of hydrogen and fluorine to hydrogen fluoride

c) 3 HF ⇌ H₂F + + HF⁻².

d) ΣΔH°f(reactants) > ΣΔH°f(products), so H₂ + F₂ → HF is exothermic.

a)  H₂ + F₂ → 2HF is the balanced equation.

b) Conversion of hydrogen and fluorine to hydrogen fluoride

c) 3 HF ⇌ H₂F + + HF⁻².

d) ΣΔH°f(reactants) > ΣΔH°f(products), so H₂ + F₂ → HF is exothermic.

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A sample of germanium at ambient temperature has to have 4.2 ppm of donor atoms added in order to expand the population of the conduction band by a factor of 3.

When excited, electrons can move from the valence band into the band of electron orbitals known as the conduction band. The electrons have sufficient energy in these orbitals to travel freely throughout the substance. Electric current is produced by this movement of electrons.

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Compared to a 1 mole sample of hydrogen at 273 K and 1 atmosphere, a 1 mole sample of hydrogen at 298 K and 1 atmosphere contains molecules having higher average kinetic energy. Option C is correct.

The relationship between the temperature and the volume of a gas at constant pressure is a direct relationship.

The higher the temperature of the gas, the greater the kinetic energy of the molecules of the gas, and the greater the collision between the molecules of the gas.

Hence, the volume of the gas increases due to increased collision between the gas molecules.

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The number of acetyl-CoA, NADH, and FADH2 that will be formed from the full oxidation of Palmitoyl-CoA are 8, 7, and 7, respectively. 8,7,7.

Each round of the cycle creates three high-energy NADH molecules and one high-energy FADH2 molecule. These high-energy carriers combine with the final part of aerobic respiration to produce ATP molecules. Additionally, ATP is formed in each cycle. One molecule of acetyl-CoA is equivalent to one cycle of the citric acid cycle.

In one round of the citric acid cycle, phosphorylation at the substrate level generates three NADH electron carriers one FADH2 electron carrier, and one ATP. Nicotinamide adenine dinucleotide or NADH is a similar compound and is more actively used in the electron transport chain. In fact, more NADH is produced and used for energy production than FADH2.

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When preparing a solution in a cuvette, make sure to handle the cuvette by the textured sides,and avoid touching the smooth sides, then, wipe down the cuvette before placing it in the spectrophotometer.

A cuvette is a little tube-shaped container with round or square cross section and straight sides. It is formed of a clear, transparent substance like plastic, glass, or fused quartz and is sealed at one end.

A spectrophotometer is a device that counts the number of photons (light's energy) absorbed after they have passed through a sample solution. By measuring the intensity of light detected, the spectrophotometer may also estimate the quantities of a known chemical compound.

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When preparing a solution in a cuvette, make sure to handle the cuvette by the textured sides,and avoid touching the smooth sides, then, wipe down the cuvette before placing it in the spectrophotometer.

A cuvette is a little tube-shaped container with straight edges and a round or square cross section. It is made of a clear, translucent material with a sealed end, such as plastic, glass, or fused quartz.

A spectrophotometer measures the quantity of photons—the energy of light—that are absorbed after passing through a sample solution. The spectrophotometer can also estimate the amounts of a known chemical substance by measuring the intensity of light that is observed.

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The kinetic energy in a system is directly proportional to the temperature of a system.

The higher the temperature, the faster the particles of a system will move. From the kinetic molecular theory, we see that the temperature of a system is a measure of the average kinetic energy of the molecules. In chemical kinetics, as the temperature increases, the kinetic energy of the system also increases.

The average air temperature read by a well-exposed thermometer over a specified period of time. For climate tables, average temperatures are usually calculated monthly and yearly.

Kelvin is the SI unit of thermodynamic temperature and one of the seven SI base units. Unusually, SI also defines another temperature unit called Celsius. Degrees Celsius is obtained by subtracting 273.15 from the temperature number in Kelvin.

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The following is the product of the given reaction and the balanced form: 2FePO4 + 3Cu(OH)2 = Cu3(PO4)2 + 2Fe(OH)3 (option C).

How can a chemical reaction be balanced?

A chemical reaction occurs when two or more reactants combine to produce products.To balance the reaction, the number of moles of each element on both sides of the equation must be equal. The following reaction is given in response to this question: Cu3(PO4)2 + Fe(OH)3?

Cu3(PO4)2 + 2Fe(OH)3 2FePO4 + 3Cu(OH)2 is the product of the given reaction and the balanced form.

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According to the given statement The rate constant for the reaction is 3.7×10⁻¹⁰m.

A physical reaction is an action that alters the material or object's physical properties. Examples of physical properties are mass, size, and density. A physical reaction is defined as a response in which ions rearrange one another without experiencing a chemical change.

Vitamin E is used in this activity.

A study of the interaction between the oxidant in ethanol and photochemically stimulated duroquinone is available.

Duroquinone was photochemically excited, and a bimolecular reaction followed at a diffusion-limited rate.

(a) In this case, we must calculate the rate constant for an ethanol diffusion-limited process.

We have datas for:

R = 8.314K⁻¹η

T =  298Kmol⁻¹

η = 1.06 x 10-3 kg m-1 s⁻¹

K = 8RT/3η

K = 8 × 8.314 ×  298/ 3η

K = 6.23×10⁹dm³mol⁻¹s⁻¹

Here we have to estimate critical reaction distance if the sum of diffusion coefficients is 1×10⁻⁹m²s⁻¹

Firstly we will write equation for kk and from it express and calculate R*

K = 4πR*DNₐ

R* = 2.77×10⁹×10⁻³/4π 1×10⁻⁹×6.23×10²³

R* = 3.7×10⁻¹⁰m.

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