the double bonds of naturally occurring polyunsaturated fatty acids usually have cis stereochemistry. draw the structure of the polyunsaturated arachidonic acid with appropriate stereochemistry. arachidonic acid is a c20 fatty acid with cis double bonds at c5, c8, c11, and c14. (10 points)

Answer:

1/1000

Explanation:

Answer:                                                                                                                    So the burning of paper is considered as a chemical change as the paper after burning changes into ashes and fumes of gases evolve.

Explanation:

Answer:

they are all planets

Explanation:

Answer: 25 moles

Explanation:

I remember learned this in last year AP Chemistry class

Answer:

Explanation:

NH₄

N: 1 x 5 valence electrons = 5 valence electrons

H: 4 x 1 valence electrons = 4 valence electrons

Total valence electrons to account = 9

Subtract 1 electron from the total since NH₄⁺ has a plus one charge.

9 - 1 = 8 electrons

There are no nonbonding electrons in the structure.

      H

       |

H -- N -- H

       |

      H

Answer:

Bond broking

Explanation:

Bond broking.

The carboxylic R-group on an amino acid behaves as an acid and loses a proton at a pH of around 7 in the majority of cells, giving the amino acid a negative charge.

The amino groups in amino acids are protonated to form ammonium ions and the carboxylic acids are ionized to their conjugate bases at neutral pH (about 7, which is the average pH of most bodily fluids and the pH at which biological events typically occur) (carboxylic ions).

One way to look at this is to imagine a water solution with a pH of 7 as a sizable acid reservoir with a constant pKa of 7. When an acid with a pKa lower than 7 (such as a carboxylic acid, which has a pKa of less than 5) dissolves in the mixture, the stronger acid will transfer a proton to the mixture and transform into the carboxylate ion.  Therefore, carboxylic acids become ionized when the pH is kept at 7

Similar to this, when an amine (often an ammonium ion with a pKa value of 10) is dissolved in water with a pH of 7, the water acts as the stronger acid, protonating the amine to create the weaker acid.  Amines are protonated to produce ammonium ions when kept at pH = 7.

Holding the pH at 7 practically means that the solution is buffered by the addition of weak acids and weak bases in sufficient concentration to prevent the H+ concentration from being significantly changed by the transfer of a few protons.

This concept works with any pH. For instance, if an amino acid is dissolved in water with a pH of 2, the resulting solution is a stronger acid than the carboxylic acid that would result from the same procedure.

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Answer:

C

Explanation:

view the Attached photo i added to see how i got that answer

Explanation:

\(CaCO _{3(s)} + 2HCl _{(aq)}→ CO _{2(g)} + H2O _{(l)} + CaCl _{2(s)}\)

The correct diagram is W.

A diagram is often a -dimensional display that communicates the use of visual relationships. it is a simplified and dependent visual representation of ideas, ideas, buildings, family members, statistical records, anatomy, etc. it can be used for all elements of human activities to give an explanation for or illustrate a topic. example Diagrams are graphics that show a photo, or photographs, accompanied with the aid of either note, labels, or a legend, which will explain principles or techniques. Describe gadgets or locations.

Display how matters paintings, circulate or change. assist provide extra perception into the issue displayed. A diagram is a drawing that suggests the distinctive parts of something and the way they work collectively. three-Line diagram is part of the detailed design document. Used for manipulating designing circuit diagrams, managing circuits, segment sequencing, differential relay placing, and metering transformer connection. A records chart is a sort of diagram or graph, that organizes and represents a set of numerical or qualitative information.

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Answer:

B. halocline

Explanation:

it is a zone in the oceanic water that changes depending on the depth

Hope This Helped Sorry If Wrong

Answer:

Gravity causes an object to fall to Earth when dropped. When the egg hits the ground with a given force, the ground exerts the same force back on the egg. If too large a force is delivered to the egg shell, the egg will crack.

Explanation:

A mortar mixture of Portland cement, sand, and water, but no hydrated lime, would probably produce a mortar with lower workability and less durability.
Mortar is a mixture of cement, sand, and water that is used to bind bricks or stones together in construction. Hydrated lime is often added to the mixture to improve its workability and durability. Without the addition of hydrated lime, the mortar would have lower workability, meaning it would be harder to spread and work with. Additionally, it would have less durability, meaning it would not hold up as well over time and could potentially crack or crumble more easily. Therefore, it is important to include hydrated lime in the mortar mixture in order to produce a strong, long-lasting mortar.

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Ions are electrically charged molecules that play an important role in the functioning of neurons.

Here, correct answer will be

They are present in the intracellular and extracellular fluid surrounding neurons, and their movements across the cell membrane are responsible for changes in the electrical potential of a neuron. The resting potential of a neuron is the electrical charge of a neuron when it is not actively sending signals, and is maintained by the movement of ions across the cell membrane.

Hyperpolarization occurs when the electrical charge of the neuron is increased, and depolarization when the electrical charge is decreased. The threshold potential is the electrical charge required for the neuron to generate an action potential, which is an electrical impulse or "spike" that is sent down the neuron's axon.

The action potential is generated by the rapid movement of ions across the cell membrane, creating an electrical impulse that is then transmitted to other neurons.

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The statement that "a logic error in which a conclusion is not a logical consequence of the evidence is an assumption" is false.

In conclusion, the correct option is false.

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The carbonic acid-bicarbonate buffer system functions mainly to d) limit pH changes caused by metabolism. This system is essential for maintaining the pH of blood within a narrow range.

The bicarbonate ion can act as a base, accepting protons from acids, while carbonic acid can act as an acid, donating protons to bases. This buffering system helps to keep the pH of the blood from becoming too acidic or too basic by neutralizing excess acid or base. The other options mentioned, such as buffering stomach acid or neutralizing urine, are functions of other buffering systems in the body.

This buffer system helps maintain a stable pH in the body by converting excess carbon dioxide into carbonic acid, which then dissociates into bicarbonate ions and hydrogen ions. This process helps to regulate the acidity or alkalinity of bodily fluids, keeping pH levels within a narrow range that is essential for proper functioning of cells and enzymes.

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The correct statements are:

A. If you rinse your buret with DI water, but do not condition with the titrant solution, the effect is...
C. an increase in the volume of the titrant required to reach the end point.
D. an underestimation of the number of moles of analyte present.

When you rinse your buret with DI water but don't condition it with the titrant solution, the residual DI water in the buret will dilute the titrant solution. This dilution will cause an increase in the volume of the titrant required to reach the endpoint. Consequently, this will lead to an underestimation of the number of moles of analyte present in the solution.

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The molecular solids can not expand to conduct electricity because there are small distances between the atoms and also their bonds are very strong, both characteristics make the movement of particles very small (they only vibrate in place), and that also causes the electrons to be attracted to the atoms with greater force and therefore they do not move easily.

Answer:

They´re pretty reactive whit wather forming hidroxydes, they have the same metal brigthness as well the same electrons valence

Explanation:

This can be for the ubications of the protons to the nucleoid of athom

• Answer is option C ,, As the frequency of a photon decreases,the wavelength increases.

A photon's energy is inversely proportional to it's wavelength.

As the frequency of a photon goes up, the wavelength goes down, and as the frequency goes down, the wavelength increases

ca and o is one ca s is two and the other one is s and o

Yes ,  it is  true that the higher energy orbitals always extend further away from the nucleus than the  lower lying orbitals.

The lower energy orbitals are closer to the nucleus as compared to the higher energy orbital . The Aufbau principles tell us that the electrons first fill to the low energy orbitals that is closer to the nucleus and then  fill the  higher energy ones. the electrons filling between orbitals of equal energy, the electrons will  fill the orbitals singly as far as the possible by the Hund's rule.

Thus , the lower energy orbitals are close to the nucleus than the higher energy orbitals.

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COVID is a condition that occurs when individuals continue to have symptoms or develop new ones after recovering from COVID-19.

In addition to affecting human health, the presence of Long COVID can also have economic impacts, particularly on GDP growth, global imbalance, and inflation.

This essay will outline how Long COVID can affect the economy in both the short and long term.  Short-term impact of Long COVID on GDP growth, global imbalance, and inflation In the short term, Long COVID's presence is likely to have a negative impact on GDP growth.

In the immediate aftermath of a pandemic, many people may not have the confidence to return to work, travel, or participate in other activities. As a result, there may be a reduction in demand for goods and services, which can lead to a decrease in GDP growth.

In addition, businesses may face additional costs related to employee absenteeism and illness, which can further harm GDP growth. Long COVID can also lead to global imbalances, particularly in countries where the virus is prevalent.

For example, if a significant portion of a country's population is experiencing Long COVID, this can lead to a reduction in exports, as businesses may not be able to produce or deliver goods and services as efficiently.

This can lead to an increase in imports, which can contribute to a trade deficit and further harm the economy. Finally, Long COVID can lead to inflation in the short term, particularly if supply chains are disrupted.

As businesses face increased costs related to employee absenteeism and illness, they may need to increase prices to maintain profitability.

In addition, if supply chains are disrupted due to Long COVID, businesses may need to pay more for raw materials and other inputs, which can lead to an increase in prices. Long-term impact of Long COVID on GDP growth, global imbalance, and inflation In the long run, Long COVID's impact on the economy is less clear.

Some economists argue that the long-term impact of Long COVID on the economy will be minimal, particularly if effective treatments and vaccines are developed.

These individuals argue that the negative short-term impacts of Long COVID on the economy will be offset by increased spending in the future, as people resume normal activities.

Others argue that Long COVID's impact on the economy will be more significant, particularly if individuals continue to experience symptoms and are unable to return to work.

These individuals argue that Long COVID could lead to a reduction in human capital, as people may not be able to participate in the labor market as efficiently. This could lead to a reduction in productivity and harm GDP growth.

Similarly, Long COVID could contribute to global imbalances in the long term, particularly if it continues to be prevalent in certain countries. If a significant portion of the population is unable to participate in the labor market, this can lead to a reduction in exports and a trade deficit.

Finally, Long COVID could contribute to inflation in the long term, particularly if it leads to a reduction in productivity. If businesses are unable to produce goods and services as efficiently due to Long COVID, this can lead to an increase in prices over time.

In conclusion, the presence of Long COVID can have a significant impact on the economy in both the short and long term. While the short-term impact may be more significant, the long-term impact of Long COVID is still uncertain and will depend on a variety of factors, including the effectiveness of treatments and vaccines.

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Long Covid is when people have continued symptoms or health difficulties after recovering from Covid-19.

Long Covid* can affect GDP growth, global imbalances, and inflation in the short and long term.

Long Covid may hurt the economy temporarily. Long Covid can impair productivity and labour force participation. This can lower GDP and economic output. Long Covid treatment expenses can strain healthcare systems and raise inflationary pressures.

Countries with a higher prevalence of Long Covid may have a bigger load on their healthcare systems and workforce, which may aggravate economic inequities. Long Covid may worsen global inequities in countries with poor resources or healthcare facilities.

Long Covid has long-term effects. Long-term health issues can impair productivity and make returning to work difficult, lowering GDP growth. Long-term healthcare costs with Long Covid may increase government deficits and debt.

Long Covid may increase cost-push inflation. Healthcare costs, such as treatment and rehabilitation, can raise medical product and service prices. Inflationary pressures reduce consumers' purchasing power and corporate profitability, hurting the economy.

Long Covid can have complex impacts on GDP growth, global imbalances, and inflation in the short and long term. These implications will depend on Long Covid's severity and persistence, healthcare responses, and pandemic-related economic policy.

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The metabolic process that occurred in the apparatus of the experiment given in the question is photosynthesis. The graphed results of the experiment are related to the process of photosynthesis.

Photosynthesis is the process in which the green plants use the energy of sunlight to convert carbon dioxide and water into glucose and oxygen. In this process, chlorophyll pigment, present in the chloroplasts of the plant cells, captures the energy of sunlight. This captured light energy is used to convert water and carbon dioxide into oxygen and glucose.

In the experiment mentioned above, the metabolic process that occurred in the apparatus is photosynthesis. It is because spinach leaves were used in the experiment to observe the amount of oxygen (O2) and carbon dioxide (CO2) present in the leaves.

The graphed results of this experiment show that the amount of oxygen in the leaves increased over time while the amount of carbon dioxide decreased. This is because the leaves absorbed carbon dioxide from the air and converted it into glucose and oxygen through the process of photosynthesis. As a result, the amount of oxygen increased over time, and the amount of carbon dioxide decreased. Hence, it can be concluded that the graphed results of the experiment are related to the process of photosynthesis.

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Answer:

hex-

Explanation:

Prefix Prefix meaning Sample word

hex-           6                                  hexapod: having six legs, an insect, for      

                                                                   example.

Answer:

Hex-

Explanation:

The negative sign means that heat was transferred from the aluminium piece to the ethyl alcohol. Consequently, the heat exchange of the system is roughly -22,770 J, or -2.28 x 10^4 J (to 2 significant figures).

The mixture's temperature rises to 20 C. The mixture in the calorimeter is then dipped into by a metallic block of mass 1 kilogramme at 10°C. The temperature rises to 19 C once thermal equilibrium has been reached.

Q = m * c * T, where Q is the heat exchanged, m is the mass of the substance, c is the specific heat capacity, and T is the change in temperature, is the formula used to determine the heat exchanged.

We can use the following formula to determine the equilibrium temperature:

m_al * c_al * (T_eq - T_al) = m_et * c_et * (T_et - T_eq)

By entering the specified values, we obtain:

(0.100 kg) * (0.902 J/g°C) * (T_eq - 450.0°C) = (0.100 kg) * (2.44 J/g°C) * (80.0°C - T_eq)

Simplifying, we get:

90.2 J/C * (T_eq - 450.0) = 244 J/C * (80.0 - T_eq)

90.2 T_eq - 40590 = 19520 - 244 T_eq

334.2 T_eq = 60110

T_eq ≈ 179.7°C ≈ 180°C (to the nearest 10°C)

As a result, the mixture's equilibrium temperature is roughly 180 °C.

(B) We can apply the same formula as before to determine the system's heat exchange. We can suppose that the mixture has a specific heat capacity equal to that of ethyl alcohol.

Q = m_al * c_al * (T_eq - T_al) + m_et * c_et * (T_eq - T_et)

Plugging in the given values, we get:

Q = (0.100 kg) * (0.902 J/g°C) * (180.0°C - 450.0°C) + (0.100 kg) * (2.44 J/g°C) * (180.0°C - 80.0°C)

Q ≈ -22,770 J ≈ -2.28 x 10⁴ J (to 2 significant figures)

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The amount of NaOH will be needed to prepare 300 ml of 0.1m solution is 1.2 gram.

Sodium hydroxide, also called as lye as well as caustic soda. It is an inorganic compound having chemical formula NaOH. It is a white solid ionic compound which is consisting of sodium cations Na+ and hydroxide anions OH−. Sodium hydroxide is a highly caustic base as well as alkali which decomposes proteins at ordinary ambient temperatures and may cause severe chemical burns. It is highly soluble in water, and it readily absorbs moisture as well as carbon dioxide from the air.

\(M_{eq}\) NaOH = Volume × Molarity = 300 × 0.1 = 30

Now lets find how many g of NaOH will be needed to prepare 300 mL of 0.1 M solution.

W / 40 × 1000 = 30

W = 1.2 gram

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Answer:

How will her velocity change when  does parachute first open?

The skydiver's weight is balanced by the air resistance. There is no resultant force and the skydiver reaches terminal velocity. When the parachute opens, the air resistance increases. The skydiver slows down until a new, lower terminal velocity is reached.

When a skydiver opens their parachute, they accelerate upwards. This is not the same as saying the move upwards. Acceleration is a change in velocity. They keep feeling an upward force (while moving downward) that slows them until they get to a new terminal velocity.

What force changes when a parachute opens?

An open parachute increases the cross-sectional area of the falling skydiver and thus increases the amount of air resistance which he encounters (as observed in the animation below). Once the parachute is opened, the air resistance overwhelms the downward force of gravity.

What happens if you open the parachute too early?

You are likely to drift off the drop zone. The winds can be pretty heavy at high altitudes, and unless you steer continuously they may blow you off-course. Needless to say, the refrigeration effect of the wind and slipstream will make you feel even colder than the mere altitude. Your landing is likely to be rough.

En esta reacción, 96 g de magnesio reaccionarán con 2 moles de oxígeno.

Tenemos la ecuación de la reacción como sigue;

2Mg + O₂ → 2MgO. La relación molar como se deduce de la ecuación de reacción balanceada que se muestra arriba es 2: 1.

Por eso;

2 moles de Mg reaccionan con 1 mol de oxígeno

x moles de Mg reacciona con 2 moles de oxígeno

x = 2 moles * 2 moles / 1 mol

= 4 lunares

Masa de magnesio = 4 moles de magnesio * 24 g / mol = 96 g de Mg

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