why would an atom have zero charge

There are 2048 different isomers arising from double-bond isomerization are possible.

Carotenoids, which exist as all-trans and cis-isomers and account for the vibrant colors of many fruits and vegetables, are among the most important colored phytochemicals. Carotenoids that have received a lot of attention in this area include -carotene, lycopene, lutein, and zeaxanthin.

Isomerization is the chemical process by which a molecule is converted into any of its isomeric forms, that is, forms having the same chemical content but distinct structure or configuration and, therefore, typically different physical and chemical characteristics.

Isomerization is a method used in p-xylene manufacturing to increase process yield. Isomerization reactors are often placed after the p-xylene separation unit to restore xylene equilibrium in the raffinate stream (the p-xylene-depleted stream produced in the separation unit).

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Answer:

20 g g/mL. 15.77

Explanation:

i think i answer it

Answer:

A. The children will be more likely to survive than if they did not have the trait.

Explanation:

Process of elimination

B. It will not affect the children.

Cannot be true, if it didn't impact the children then how would survival of the fittest work?

D. The children will be able to adapt if the environment changes.

That just... not how adapting works when it comes to evolution.

C. The children will be more likely to survive than their parents were

Everyone has the same trait, everyone is equal in that regard.

A. The children will be more likely to survive than if they did not have the trait.

"Suppose a pair of animals has a trait that helps them survive in their environment." The trait helps them survive. Not having the trait makes them less likely to survive. A is correct

The heat of vaporization (DHovap) of benzene at 298 Kelvin is 33.89 kJ/mol and its vapor pressure is 96 torr.

To calculate Keq at 298 Kelvin, we will use the following equation; Delta G = -RT ln Keq

Where;

ΔG = Gibbs Free Energy

R = Gas constant

T = Temperature

Keq = Equilibrium constant

Given:

DHovap = 33.89 kJ/mo

lT = 298

KPH2O = 96 torr

First, we will convert vapor pressure to atm using the following;1 atm = 760 torrPH2O = 96 torr/760 torr/atm= 0.1263 atm. Now we can calculate ΔG using the following equation;ΔG = DHovap - RT ln(PH2O). Where; R = 8.314 J/mol.K Note that we need to convert kJ to J.1 kJ = 1000 JDHovap = 33.89 kJ/mol = 33.89 x 1000 J/mol DHovap = 33,890 J/molΔG = (33,890 J/mol) - (8.314 J/mol.K)(298 K)ln(0.1263 atm)ΔG = - 20602.88 J/mol. Now, we can solve for Keq by rearranging the equation for ΔG;ΔG = -RT lnKeqKeq = e^(-ΔG/RT)Keq = e^(-(-20602.88 J/mol)/(8.314 J/mol.K)(298 K))Keq = 2.37 x 10^21Answer: The Keq at 298 Kelvin is 2.37 x 10^21.

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The system of differential equations for Q1(t) and Q2(t) is:

dQ1/dt = -4, dQ2/dt = -18.

Let's consider the rate of change of salt in T1 and T2. The rate at which salt is poured into T1 is 2 pounds per gallon multiplied by 1 gallon per minute, given by 2(1) = 2 pounds per minute. Since the solution is being pumped out of T1 at 3 gallons per minute, the rate of salt being removed from T1 is 2 pounds per minute multiplied by 3 gallons per minute, which is 6 pounds per minute.

Therefore, the rate of change of salt in T1 is given by the difference between the pouring rate and the removal rate: dQ1/dt = 2 - 6 = -4 pounds per minute.

Similarly, the rate of salt being poured into T2 is 3 pounds per gallon multiplied by 2 gallons per minute, given by 3(2) = 6 pounds per minute. The solution is being pumped out of T2 at 4 gallons per minute, so the rate of salt being removed from T2 is 6 pounds per minute multiplied by 4 gallons per minute, which is 24 pounds per minute.

Therefore, the rate of change of salt in T2 is given by: dQ2/dt = 6 - 24 = -18 pounds per minute.

Combining these results, we obtain the system of differential equations:

dQ1/dt = -4

dQ2/dt = -18

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Answer:

B. wave 1 has a larger wavelength than wave 2

Wave 1 has larger wavelength than wave 2. Hence, option B is correct.

Wavelength is defined as "the difference between two successive crests and troughs of the wave. The wavelength described the how long wave is. It is measure in the direction of wave.

Wavelength is usually denoted by the Greek letter ( λ ).

Wavelength is equal to the speed ( V ) of wave train to divided by frequency ( F ). It is given as,

λ = V ÷ F

Here,

λ = wavelength

V = speed

F = frequency

The distance between one crests (top) to another crests is a Wavelength. Alternately the distance between one troughs (bottom) to another troughs is wavelength.

The distance between two  crests in wave 1  is more comparatively wave 2 so , wave 1 will have larger wavelength than wave 2.

Therefore, wavelength is used for measuring the radiation.

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Answer: 160.0g

Explanation:

130g < 160g

a. Example of physical change: Melting of ice

Example of chemical change: Burning of paper

b. Example of physical property: Density of a substance

Example of chemical property: Reactivity of a substance

a. A known example of a physical change is the change of state of water. When water is heated, it undergoes a physical change from a solid state (ice) to a liquid state (water) and further to a gaseous state (water vapor). The chemical composition of water remains the same throughout these changes, and only the arrangement and energy of the water molecules change.

On the other hand, a known example of a chemical change is the combustion of wood. When wood is burned, it undergoes a chemical change where the molecules of wood react with oxygen from the air to produce carbon dioxide, water vapor, and other combustion products. The chemical composition of wood is altered during this process, and new substances are formed.

b. Physical properties are characteristics of a substance that can be observed or measured without changing its chemical composition. For example, the physical properties of water include its boiling point, melting point, density, color, and transparency. These properties describe how water behaves and reacts under different conditions, but they do not involve any changes in its chemical identity.

Chemical properties, on the other hand, describe the ability of a substance to undergo chemical changes and react with other substances. For example, the ability of iron to rust when exposed to oxygen and moisture is a chemical property. It involves a chemical reaction where iron reacts with oxygen to form iron oxide.

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The structure and function of a bat's wings and a butterfly's wings are similar.

The use of both wings—those of a bat and a butterfly—for flight is a similarity between them. From the foregoing, we can deduce that these organs are analogous because, despite having a different origin, they carry out similar tasks. Both a butterfly's and a bat's wings are used for flight, making them similar in function. Convergent evolution produced these two. A butterfly's wing and a bat's wing are similar in structure. Both have wings and can fly, but they come from different places. Bat wings are made of bones, whereas butterfly wings are made of other materials and have a very distinct structure. No, the wings of a bat and a butterfly should not be regarded as homologous organs since they have different origins and structures but serve the same purpose in flight, making them analogous organs.

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The corrected balanced chemical equation for the given reaction:
4C14H10O2 + 4NaBH4 → 4C14H14O2 + 4NaB + 2H2

To obtain the balanced chemical equation, follow these steps:

1. Identify the reactants and products:

4C14H10O2 + 4NaBH4 (reactants) → 4C14H14O2 + 2Na2 + B4 (products)

2. Note that there is an issue with the products side, so we'll correct it by replacing 2Na2 and B4 with 4NaB, which is a more likely product: 4C14H10O2 + 4NaBH4 → 4C14H14O2 + 4NaB

3. Count the number of atoms for each element on both sides of the equation.

4. Adjust the coefficients to make the number of atoms equal on both sides.

5. Double-check to make sure the equation is balanced.

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Explanation:

NaOH + HCl → H2O and NaCl.

To calculate the pH of the reaction  buffer obtained by adding 4.0g NaOH to 1.00L of 0.3M CH3COOH (pKa=4.76), we use the Henderson-Hasselbalch equation.

First, we need to calculate the concentration of CH3COOH before the addition of NaOH. The number of moles of CH3COOH in 1.00L of 0.3M CH3COOH is:moles CH3COOH = Molarity x Volume= 0.3M x 1.00L= 0.3 molesWe can use the balanced chemical equation for the reaction between NaOH and CH3COOH to find the number of moles of CH3COOH and CH3COO- after the addition of NaOH:CH3COOH + NaOH → CH3COO- + H2ONumber of moles of NaOH = mass / molar mass= 4.0g / 40 g/mol= 0.1 molesNaOH is a strong base, so it reacts completely with CH3COOH to form CH3COO- and water:NaOH + CH3COOH → CH3COO- + H2ONumber of moles of CH3COOH remaining = initial moles of CH3COOH - moles of NaOH= 0.3 - 0.1= 0.2 molesNumber of moles of CH3COO- formed = moles of NaOH= 0.1 moles.

Now we can calculate the concentration of CH3COOH and CH3COO-:[CH3COOH] = moles / volume= 0.2 moles / 1.00L= 0.2M[CH3COO-] = moles / volume= 0.1 moles / 1.00L= 0.1MNext, we can use the Henderson-Hasselbalch equation to find the pH of the buffer:pH = pKa + log [A-] / [HA]pKa = 4.76[CH3COOH] = 0.2M[CH3COO-] = 0.1MpH = 4.76 + log (0.1 / 0.2)= 4.76 - 0.301= 4.459.
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Answer:

If the numbers of each type of atom are different on the two sides of a chemical equationExplanation:

Answer:

the answer is C

Explanation:

it can form 3 bonds

There 88.94 grams would be grams of aluminum chloride are produced when aluminum reacts with 18.0 grams of hydrochloric acid to produce aluminum chloride and hydrogen gas.

To calculate aluminum chloride that are produce first we should write the balance reaction

2Al + 6HCl → 2AlCl₃ + 3H₂,

Then we can calculate the moles of aluminum

Moles aluminum = mass/ mass molar

Moles aluminum = 18 grams / 27 grams / moles

Moles aluminum = 0.667 moles

Form the reaction, it is clear that 2.0 moles of Al react with 6.0 mole of HCl to produce 2.0 moles of AlCl₃ and 3.0 mole of H₂.

using unitary method we can calculate the moles of Aluminum chloride

moles AlCl₃ = 2/2 x mole Al

Moles AlCl₃ = 2/2 x 0.667 moles =0.667 moles

Mass AlCl₃ = moles x mass molar

Mass AlCl₃ = 0.667 moles x 133.34 g/mol

Mass AlCl₃ = 88.94 grams

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For getting an indication whether a chemical reaction or chemical change has taken place, if  B)Heat is given off then chemical reactions occur. So,correct option is B.

Chemical reactions are surrounding us, from the digestion of food in our body to how the light we get from the sun is the consequence of compound responses. Prior to starting with compound responses, realizing about physical and synthetic changes is significant

Option A can't be the response is dissolving is an actual change. No substance response occurred.

Option B is the response as it is an EXOTHERMIC reaction so intensity will be emitted.

Option C can't be the response as dissolving is essentially ions becoming particles, not a synthetic response by which a reactant responds with one more reactant to shape an item.

Option D can't be the response. Same explanation with respect to why An isn't the response.

Hence, correct option is B.

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(Complete question) is:

When determining whether a chemical reaction has taken place, you observe and look for several indicators. Which would be considered an indication that a chemical reaction or chemical change has taken place? A) Solid melts. B) Heat is given off. C) Substance dissolves D) Substance changes shape.

Answer: 12

Explanation: 18mL 14L(1.6x10-2) 23ml 12L

1 Milliliter (mL) is equal to 0.001 liter (L)

1.6x10-2= 14  you see my point?

18 and 23 are both mL so bye bye 14 bigger then 12 so there

Answer:

it's the third

Explanation:

I need to fill 20 spaces. don't mind that

Answer:

Na gains two protons from Cl.

Explanation:

this should help

Answer:

An atom is the smallest particles of an element that takes part in a chemical reaction.

Explanation:

The three tiny particles are usually referred to as subatomic particles. They are Protons, Neutrons and Electrons.The protons and neutrons in the nucleus are collectively referred to as nucleus

Answer:

Neither NaOH nor Ca(OH)2 are phosphates. NaOH is sodium hydroxide and Ca(OH)2 is calcium hydroxide. Calcium hydroxide has a higher pH than sodium hydroxide because there are two hydroxides for every calcium ion in Ca(OH)2. This means that every time a single Ca(OH)2 dissociates, two hydroxide ions will contribute to the pH of the solution, while every time that a single NaOH dissociates, only one OH will be released to contribute to the pH.

B.

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Desert environment will probably have the lowest relative humidity.

Relative humidity is a measure of water vapor content in the air. Desert environment will have the lowest relative humidity due to its high temperature and no availability of water bodies such as river, ocean etc so we can conclude that desert environment will probably have the lowest relative humidity.

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The sample's decay constant for the given time of radioactive decay is 0.0058 days⁻¹. Thus, the half life of the sample is 119.48 days.

Heavy unstable radioactive nuclei undergo radioactive decay by the emission of charged particles. They stable isotopes or new atoms by radioactive decay.

It is given that the sample of 24 grams decays to 18.8 grams within 18 days. The decay constant k can be calculated as follows:

k = 1/t log (Ci/Ct)

Where Ci is the initial amount and Ct be the final amount.

k = 1/18 log (24 g /18.8 g)

  = 0.0058  days⁻¹

Now, the half life time of the sample can be calculated as:

t1/2  = 0.693 / k

      = 0.693/0.0058  days⁻¹

      = 119.4 days.

Therefore, the half life of the sample is 119.4 days.

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The amount of n2 gas released when the divers return to the surface of the water, where the partial pressure of n2 is 0.8atm is 2.84704L

What is partial pressure?

In a mixture of gases, each constituent gas has a partial pressure which is the notional pressure of that constituent gas as if it alone occupied the entire volume of the original mixture at the same temperature.

How to calculate the n2 gas released?

When the partial pressure is higher, then the solubility will be higher as well.

Hence, at 4atm

Solubility = (0.00056/0.8)*4 = 0.0028 mol/L

Moles of N2 released = change in molarity * volume

= ( 0.0028 - 0.00056) * 5 = 0.112 moles

Using ideal gas equation, PV = nRT

P = pressure = 1atm

n = 0.112 moles

R = 0.082 (from literature)

T = 37C + 273 = 310K

V = volume = ( 0.112 * 0.082 * 310K) / 1 = 2.84704L

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Answer:

Nuclear power plants use heat produced during nuclear fission to heat water. In nuclear fission, atoms are split apart to form smaller atoms, releasing energy. Fission takes place inside the reactor of a nuclear power plant. At the center of the reactor is the core, which contains uranium fuel

Explanation: