please determine the correct ionization states of these amino acids at ph 7. (i.e. which functional groups would have a proton added which would have

i cant understand your question define briefly

Answer:0

Explanation: zero because it is the most stable form of oxygen in its standard state

Answer:

Me gusta tu corte G

Explanation:

Answer:

\(2Al(s) + 3NiSO4 --> Al2(SO4)3 + 3Ni\)

Explanation:

This reaction type is a single replacement. The format of a single replacement is:

\(A+BC --> B+AC\)

A= Al

B= Ni

C= SO

The coefficient 3 for Ni would become a subscript for  AC. After you plug those into the reaction you need to count how many of each are on the left side and try to get the same number on the right side. Both sides must be equal to have a balanced equation.

There is the formation of intermolecular hydrogen bonding in ethanol as shown in the model below.

Intermolecular interactions can arise when ethanol, a common alcohol, is liquid. These interactions result from the ethanol molecule's polarity and hydrogen bonding propensity.

Two carbon atoms, five hydrogen atoms, and one oxygen atom make up the compound ethanol (C2H5OH). Because the oxygen atom is more electronegative than the carbon and hydrogen atoms, they are bound together by a polar covalent bond.

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Answer:

Pull with less force, Add an apple to the basket, and Roughen the surface of the table to increase friction

Explanation:

When an inert gas, such as argon (Ar), is added to a reaction mixture at constant volume, it behaves independently of the chemical reaction occurring. Inert gases do not participate in the reaction or undergo any chemical changes themselves. Instead, they simply occupy space within the container.

Since the addition of argon does not affect the concentrations or partial pressures of the reacting species, it does not cause any changes in the equilibrium position. The reaction will continue to reach and maintain its equilibrium state with the same partial pressures of the reacting species as before the addition of the inert gas.

Therefore, in the given scenario, the partial pressures of the reacting species, such as P(NO2) and P(N2O4), will remain unchanged when a small amount of argon gas is added to the equilibrium mixture at constant volume.

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Answer:

17 protons

19 neutrons

Explanation:

Chlorine will always have the same amount of protons, and that would be 17 protons.

The atomic mass will change according to how many neutrons are present.

Cl - 35 is comprised of 17 protons and 18 neutrons.

We want to find Cl - 36:

We simply add 1 neutron. 18 + 1 = 19 neutrons.

The precipitate that should form first in this situation is PbI2. the second cation to precipitate is Ag+ and the [I-] required for the second cation to begin to precipitate is 8.5 × 10^-17/0.10M or 8.5 × 10^-16 M. [Pb+2] that remains in solution at the point where the second cation starts to precipitate is 0.10 - 8.5 × 10^-16 M = 0.10M (as it is a negligible change).Yes, Pb-2 and Ag+ can be effectively separated by fractional precipitation of their iodides

(a) The precipitate that should form first in this situation is PbI2.The Ksp values for PbI2 and AgI are 7.1 × 10−9 and 8.5 × 10−17 respectively. As a result, the Ksp value for PbI2 is much greater than that for AgI. Since the amount of Ag+ and Pb+2 present in solution is the same, the one with the higher Ksp value will precipitate first, and PbI2 will form first. Therefore, PbI2 will form a precipitate before AgI does.

(b) The solubility product expression is given below:[Pb+2][I−]2 = 7.1×10−9For the second cation to start precipitating, [Ag+], the concentration of the second cation must exceed the solubility product constant of AgI. The solubility product expression for AgI is given below: [Ag+][I−] = 8.5×10−17Therefore, the second cation to precipitate is Ag+ and the [I-] required for the second cation to begin to precipitate is 8.5 × 10^-17/0.10M or 8.5 × 10^-16 M.

(c) At the point at which the second cation begins to precipitate, the concentration of the first cation that remains in solution can be calculated by subtracting the amount of the first cation that precipitated from the initial concentration. Thus, for PbI2, the concentration of the first cation that precipitates is equal to [Pb+2] that reacts with [I-] to produce PbI2. Hence, [Pb+2] that remains in solution is [Pb+2]initial - [Pb+2]precipitated. Using this formula, we can find the concentration of Pb+2 that remains in solution. [Pb+2]precipitated can be determined using the molar ratio of Pb+2 and I-. Therefore, for every 1 mole of Pb+2, 1 mole of I- reacts to form PbI2, hence [Pb+2]precipitated = [I-] used. [Pb+2]initial = 0.10M, [I-] used is the same as [Ag+], which is equal to the concentration of the second cation that precipitated = 8.5 × 10^-16 M. Therefore, [Pb+2] that remains in solution at the point where the second cation starts to precipitate is 0.10 - 8.5 × 10^-16 M = 0.10M (as it is a negligible change)

.(d) Yes, Pb-2 and Ag+ can be effectively separated by fractional precipitation of their iodides as the Ksp values of PbI2 and AgI are widely different and the precipitation of PbI2 takes place before AgI.

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Answer:the element is potassium

the proton and electron is 19 and the nuetron is 19

Explanation:

Answer:

The atomic number gives the number of protons 19

p = 19

The atomic mass is the sum of the protons and neutrons

p+n = 39 p = 19

Put p into the equation and solve for n the neutrons

19+n = 39

Subtract 19 from both sides

19-19+n = 39-19

n = 20

The number of electons equal the number of protons in a neutral atom. The positive charge equal to the negative charge. The negative charge is the number of electons. This ion has a charge of +1. So solve for the negative charge.

-19+1 = -18

The negative charge is -18 so

e = 18

Answer:

Explanation:

Definition of Percentage by weight

It is defined as the mass percent composition of an element in a compound.

It can be abbreviated as w/W %

Percentage of carbon by weight in glucose:

Let us calculate the mass of glucose= 6 x mass of C + 12 x mass of H + 6 x mass of O

= 6 x 12 + 12 x 1 + 6 x 16

= 180 g

Total mass of carbon = 6 x 12 = 72 g

Therefore the percentage of carbon by weight in glucose is:

40 percentage

Conclusion: Glucose ( C 6 H 12 O 6 ) contains 40 percentage of carbon by weight.

Conclusion: Glucose

contains 40percente of carbon by weight.

As a result, cysteine cannot be the first amino acid in the tripeptide. The correct answer is "Ala-Tyr-Cys".

Peptides are short chains of amino acids that have been bonded together. Amino acids are the building blocks of proteins and peptides. When two or more amino acids join together, they form peptides. Proteins are made up of one or more polypeptide chains.

Enzymes are proteins that catalyze biochemical reactions. Tripeptides are made up of three amino acids, and when aspartic acid, tyrosine, alanine, and cysteine are mixed together and allowed to form tripeptides, Ala-Tyr-Cys will form. The reason Ala-Tyr-Cys will form is that aspartic acid has a negatively charged carboxylic acid group (COO-), which will repel the negatively charged carboxylic acid group on cysteine.

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Answer:

Percent yield = 88%

Explanation:

Given data:

Mass of C₇H₆O₃ = 200.0 g

Actual yield of aspirin = 231 g

Percent yield  = ?

Solution:

Chemical equation:

C₇H₆O₃  + C₄H₆O₃      →       C₉H₈O₄ + C₂H₄O₂

Number of  moles of aspirin:

Number of moles = mass/molar mass

Number of moles = 200.0 g/ 138.12 g/mol

Number of moles =  1.45 mol

Now we will compare the moles of aspirin with C₇H₆O₃.

                          C₇H₆O₃           :           C₉H₈O₄

                               1                 :               1

                            1.45              :             1.45

Theoretical yield of aspirin:

Mass = number of moles × molar mass

Mass = 1.45 g × 180.158 g/mol

Mass = 261.23 g

Percent yield:

Percent yield =( actual yield / theoretical yield )× 100

Percent yield =  (231 g/ 261.23 g)× 100

Percent yield = 0.88 × 100

Percent yield = 88%

Answer:

Two young school mates talk you vivo en miami the answer is Dónde vives tú

Explanation:

Answer:

C. 12.85

Explanation:

just did

Answer:

3).

\(time = \frac{distance}{speed} \\ time = \frac{225}{3} \\ time = 75 \: s\)

4).

\(speed = \frac{distance}{time} \\ speed = \frac{110}{55} \\ speed = 2 \: {ms}^{ - 1} \)

The wavelength of the electron with a speed of 1.68 x 10^8 m/s is approximately 4.325 x 10^-12 meters. This calculation demonstrates the wave-particle duality of matter, showing that particles like electrons can exhibit wave-like characteristics, and their wavelength can be determined using the de Broglie equation.

To determine the wavelength of an electron given its speed, we can use the de Broglie wavelength equation, which relates the wavelength of a particle to its momentum. The de Broglie wavelength equation is λ = h / p, where λ is the wavelength, h is the Planck's constant (approximately 6.626 x 10^-34 J·s), and p is the momentum of the particle.

The momentum of an electron can be calculated using the equation p = m·v, where m is the mass of the electron and v is its velocity.

The mass of an electron is approximately 9.109 x 10^-31 kg. Given the speed of the electron as 1.68 x 10^8 m/s, we can calculate the momentum using p = (9.109 x 10^-31 kg) * (1.68 x 10^8 m/s).

Once we have the momentum, we can use the de Broglie wavelength equation to find the wavelength of the electron. Substituting the values into the equation λ = (6.626 x 10^-34 J·s) / p, we can calculate the wavelength.

Let's perform the calculations to determine the wavelength of the electron.

Given:

Mass of electron (m) = 9.109 x 10^-31 kg

Speed of electron (v) = 1.68 x 10^8 m/s

Planck's constant (h) = 6.626 x 10^-34 J·s

1. Calculate the momentum of the electron:

p = m * v

p = (9.109 x 10^-31 kg) * (1.68 x 10^8 m/s)

p ≈ 1.530 x 10^-22 kg·m/s

2. Use the de Broglie wavelength equation to find the wavelength:

λ = h / p

λ = (6.626 x 10^-34 J·s) / (1.530 x 10^-22 kg·m/s)

λ ≈ 4.325 x 10^-12 m

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The reactants in the aqueous  solutions gave rise to a precipitate.

We have to note that when we have two reactants that are in the aqueous states and then the reaction of the two substances that are in the aqueous state would lead us to the formation of a solid product, we can say that there have been the formation of a precipitate.

In this case we can see that experiments all led to the formation of the precipitates and that the stoichiometric of the precipitates agrees with the reaction.

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2,3-Dichloro-5,6-Dicyanobenzoquinone is abbreviation of DDQ.

A stronger oxidant than 1,4-benzoquinone, DDQ (2,3-dichloro-5,6-dicyanobenzoquinone) is employed as a reagent for oxidative couplings, cyclization processes, and the dehydrogenation of hydroaromatic compounds.

What in chemical chemistry is DDQ?

In dry conditions, the powerful oxidizing quinone DDQ is eternally stable. It is frequently used to create aromatic and,-unsaturated carbonyls from organic molecules as well as to convert activated methylene and hydroxy groups into carbonyl compounds.

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Answer:

In pure covalent bonds, the electrons are shared equally. In polar covalent bonds, the electrons are shared unequally, as one atom exerts a stronger force of attraction on the electrons than the other. The ability of an atom to attract a pair of electrons in a chemical bond is called its electronegativity.

The volume of the 7.50 m potassium carbonate solution with 49.0 kg of potassium carbonate dissolved in it is 47270 ml.

To calculate the volume in ml of a 7.50 m potassium carbonate solution with 49.0 kg of potassium carbonate dissolved in the solution, we will use the formula Molarity = (moles of solute) / (liters of solution).

First, we need to calculate the moles of potassium carbonate in the solution. To do this, we will use the molar mass of potassium carbonate, which is 138.21 g/mol.

Moles of potassium carbonate = (49.0 kg) / (138.21 g/mol) = 354.54 mol

Next, we will rearrange the formula for molarity to solve for liters of solution:

Liters of solution = (moles of solute) / (Molarity) = (354.54 mol) / (7.50 m) = 47.27 L

Finally, we will convert the liters of solution to milliliters:

Volume in ml = (47.27 L) * (1000 ml/L) = 47270 ml

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gram of NO=5

2NO = 2N+O2

2×2.50=x

x=5

The mass of nitrogen monoxide  produced from 2.5 grams of oxygen is 1.875 grams

4NH₃ + 50₂ → 4NO + 6H₂0

The limiting reagent is 0₂ because the least moles of this are used in the reaction.

Therefore, it will determine the amount of product formed.

From the chemical reaction above

10(16) g of 0₂ gives (4×14 + 4×16) g of NO

2.50 g of 0₂ will give ? of NO

cross multiply

mass of NO formed = 2.50 × 120 / 160

mass of NO formed = 300 / 160

mass of NO formed = 1.875 grams

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Answer:

Caffeine has no atomic number

Explanation:

Caffeine is a compound, not an element. Therefore it cannot have an atomic number.

The empirical formula, which represents the simplest ratio of atoms in a compound, may be useful in the lab setting but not useful for predicting the properties and functions of materials.

In the lab, the empirical formula can be useful for identifying the composition of a compound, especially if the molecular formula is unknown. It can also help in determining the stoichiometry of a reaction, which can be important for conducting experiments. However, the empirical formula does not provide information about the actual number of atoms or the arrangement of atoms within a molecule, which can greatly affect the properties and functions of a material.

Therefore, while the empirical formula can be a useful tool in the lab setting, it may not be sufficient for predicting the properties and functions of materials. More detailed information about the molecular formula and structure is needed for accurate predictions.

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Answer:

Reasons water is important

Imagine earth without water. The soil, with no water in it and nothing growing on it, would be lifeless, dead, collapsed into dust, sand, clay or rock.

-Water consumption helps lubricate and cushion your joints, spinal cord, and tissues. This will help you enjoy physical activity and lessen discomfort caused by conditions like arthritis.

-Water is a main component of saliva. Saliva also includes small amounts of electrolytes, mucus, and enzymes. It’s essential for breaking down solid food and keeping your mouth healthy.

The statement that correctly describes the reaction of sulfur dioxide gas in the presence of oxygen and vanadium(V) oxide to form sulfur trioxide is: Vanadium (V) oxide is a catalyst.

The correct option is 4.

A catalyst is a substance that alters the rate of a chemical reaction but which remains chemically unchanged at the end of the chemical reaction.

A catalyst can increase the rate of chemical reactions and it can also decrease the rate of chemical reactions. Catalysts that increase the rate of chemical reactions are called positive catalysts whole catalysts that decrease the rate of chemical reactions are called negative catalysts.

Catalysts alter the rate of chemical reactions by lowering or raising the activation energy of a reaction.

The reaction of sulfur dioxide gas in the presence of oxygen and vanadium(V) oxide to form sulfur trioxide is a catalytic reaction.

In the reaction, vanadium(V) oxide acts as a positive catalyst by speeding up the rate of the reaction.

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Complete question:

Sulfur dioxide gas can react in the presence of oxygen and vanadium(V) oxide to form sulfur trioxide. Sulfur trioxide is the only product of the reaction. Which statement correctly describes this reaction?

1) Sulfur dioxide is a catalyst

2) Sulfur trioxide is a catalyst

3) Oxygen is a catalyst

4) Vanadium (V) oxide is a catalyst

When the temperature is decreased to 150 K while keeping the pressure constant at 1.5 atm, the new volume would be 1.15 L. The volume decreases from the initial volume of 2.3 L to the new volume of 1.15 L.

According to the ideal gas law, the relationship between pressure (P), volume (V), and temperature (T) of a gas is given by;

PV = nRT

Where; P = pressure (in atm)

V = volume (in liters)

n = number of moles of gas

R = ideal gas constant (0.0821 L·atm/(mol·K))

T = temperature (in Kelvin)

In this case, the pressure is constant at 1.5 atm. The initial temperature is 300 K, and the initial volume is 2.3 L. The chemist then decreases the temperature to 150 K while keeping the pressure constant.

To determine the new volume, we can use the combined gas law, which relates the initial and final conditions of pressure, volume, and temperature;

(P₁ × V₁) / T₁ = (P₂ × V₂) / T₂

Substituting the given values;

(1.5 atm × 2.3 L) / 300 K = (1.5 atm × V₂) / 150 K

Simplifying the equation;

(1.5 × 2.3) / 300 = 1.5 × V₂ / 150

0.0115 = 1.5 × V₂ / 150

V₂ = (0.0115 × 150) / 1.5

V₂ = 1.15 L

Therefore, the new volume would be 1.15 L.

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Elements from place theory and geoheritage can be used in the conservation of a natural resource. Place theory emphasizes the cultural and emotional connections between people and places, while geoheritage focuses on the geological and ecological values of an area. Incorporating these elements in conservation efforts can help raise awareness, foster a sense of belonging, and highlight the intrinsic value of the natural resource, leading to better stewardship and preservation.

Place theory recognizes that people develop a connection with specific places due to their cultural significance, history, and personal experiences. By incorporating place-based approaches in the conservation of a natural resource, such as highlighting the cultural and historical importance of the area, it can foster a sense of attachment and pride among local communities. This can lead to increased support and engagement in conservation initiatives.

Geoheritage, on the other hand, focuses on the geological and ecological values of a specific area. Understanding the geological processes, unique landforms, biodiversity, and ecological significance of a natural resource can provide a strong scientific foundation for its conservation. By emphasizing the geoheritage values, such as rare geological formations or endangered species habitats, conservation efforts can be targeted towards preserving these specific features.

By combining elements from place theory and geoheritage, conservation efforts can encompass both the cultural and scientific aspects of a natural resource. This holistic approach not only enhances the understanding and appreciation of the resource but also promotes sustainable management practices for its long-term conservation.

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Answer:

B: Maintaining Homostasis

Explanation: