when amino acids combine in a condensation reaction, the new functional group formed can be classified as a(n) .

Answer:

Cell wall

Explanation:

i just searched it up

a) The molecular orbital diagram of carbide ion in ground state is attached in the image below and b) The bond order of C22- is 2 and C) the molecule is diamagnetic.

a) The valence electrons of the carbide ion into the given diagram in order to create the molecular orbital diagram for the carbide ion in its ground state is given as by deriving bond order as follows:

b) The bond order can be calculated as follows:

Bond order=8-2/2=2

c) The molecular orbital diagram of carbide ion in ground state is attached in the image below. This molecule is diamagnetic in nature. A diamagnetic substance is one whose atoms have no permanent magnetic dipole moment.

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Answer:

I believe that it is a

Explanation:

I can't comment on you the other question for some reason. Do you have any other means of communication??

Answer:

don't know sorry

Explanation:

(-_-)

Answer

A

Explanation

According to the picture given, actoivation energy is the distance from the reactants to the top of the hill.

The energy provided by the snack is obtained as 14,928.57J/g

The calorimeter is used to determine how much energy is in food. In the calorimeter, the meal is burned to determine how much energy it contains.

Energy is created when food is burned, regardless of its mass.

How to calculate this:

Mass of food burnt = 2.85 - 2.15 = 0.70g

The energy that is provided by the snack in J/g = 10,450/0.70

=14,928.57J/g

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Concentrations of alpha-fetoprotein (AFP):

Increased concentrations of alpha-fetoprotein (AFP) in adults are most characteristically associated with Hepatocellular carcinoma.

Alpha Fetoprotein (AFP):

It is a protein produced in a developing baby's liver. When a newborn is born, their AFP levels are typically high, but by the time they turn one, they are quite low. AFP levels in healthy persons should be extremely low. For adults, a typical AFP level ranges from 10 ng/mL to 20 ng/mL.

In reaction to cancer in the body, normal or cancerous cells produce chemicals known as tumor markers. High levels of AFP can indicate noncancerous liver illnesses such as cirrhosis and hepatitis as well as cancers of the testicles, ovaries, or liver.

Thus, one of the risk factors for Hepatocellular carcinoma has been proven to be a persistent increase in AFP serum levels.

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The estimated molar mass of the gas is 17.25 g/mol.

The rate of effusion for a gas is inversely proportional to the square root of its molecular weight. As a result, if a gas effuses faster than another gas, it has a smaller molecular weight (mass).

The ratio of the effusion rates of the two gases can be used to estimate the ratio of their molecular masses. The molecular mass of carbon dioxide (CO2) is 44 g/mol, for example. Assume that the gas has an effusion rate of 1.6 times that of CO2.

According to the equation,

rate of effusion  ∝ 1 / √(molecular weight)

For two different gases 1 and 2, the ratio of the rates of effusion is given as: rate of effusion for gas 1 / rate of effusion for gas 2 = √(molecular weight of gas 2) / √(molecular weight of gas 1)

Solving for the molecular weight of the gas, we get:

Molecular weight of gas = Molecular weight of CO2 × (rate of effusion of CO2 / rate of effusion of gas)²= 44 × (1 / 1.6)²= 44 × 0.390625= 17.25

Therefore, the estimated molar mass of the gas is 17.25 g/mol.

The estimated molar mass of the gas is 17.25 g/mol.

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pH = -log[H3O+] = -log(8.26 x 10^-5) = 4.083 (three decimal places because the concentration had three sig figs)

Explanation:

The electronic configuration of Selenium(Se) is 1s22s22p63s23p63d104s24p4 we remove electron .the electron configuration is1s22s22p63s23p63d104s24p4

the correct anwser is C

The electron configuration for Selenium is: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁴.

Therefore, option c is correct.

The electronic configuration of an element is the filling of electron from lower energy level to the higher energy level. This is according to the Aufbau's principle.

Selenium has 34 electrons. The electronic configuration of Selenium can be determined by filling the electrons in increasing order of energy levels and sub-levels.

The electronic configuration of Selenium can be written as:

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁴

Here, 4s is more energetic than 3d and thus occupies first.

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Answer:

can you help mine please

How many molecules of chlorine are needed to react with 56.Og of iron to form Iron (III) chloride (FeCl3)?

Answer:

boiling water

Explanation:

its hotter

Answer:

too many greenhouse gases can cause the temperature to increase out of control. ... The increased greenhouse effect is causing changes in our planet that can affect our lives. The major Greenhouse Gas, carbon dioxide, emitted naturally and by the burning of fossil fuels, stays in the atmosphere a long

Effects: By increasing the concentration of greenhouse gases in the atmosphere, we’re amplifying the planet’s natural greenhouse effect and turning up the dial on global warming.

The atmosphere of the Earth may begin to trap more and more heat if these greenhouse gases are present in excess. Earth warms as a result of this.

A greenhouse gas is a gas that produces the greenhouse effect by both absorbing and emitting radiant energy at thermal wavelengths that are infrared. The five main greenhouse gases in the atmosphere of Earth are ozone, carbon dioxide, methane, and water vapour.

Carbon dioxide, methane, nitrous oxides, and water vapour are examples of greenhouse gases. (A "feedback" is the term used to describe water vapor, which reacts chemically or physically to changes in temperature.) Scientists have found that the warming effect of carbon dioxide contributes to the stabilisation of Earth's atmosphere.

Thus, the atmosphere of the Earth may begin to trap more and more heat if these greenhouse gases are present in excess. Earth warms as a result of this.

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The K value of 5.62 x 10-102A may be used to determine the hydroxide concentration of an equilibrium ammonia solution at a concentration of 0.10 molar. The equilibrium constant for the reaction of ammonia with water to produce ammonium and hydroxide ions is known as the K value.

The reaction's equation is as follows: NH3 + H2O -> NH4+ + OH- This equation is used to determine the K value: K = [NH3][NH4+][OH-] The K value may be modified to get the hydroxide concentration .

Since the ammonia concentration is 0.10 molar: [OH-] = K x [NH3] = 5.62 x 10-102A x 0.10 = 3.17 x 10-12 molar As a result, the hydroxide concentration of an equilibrium ammonia solution at 0.10 molar is 3.17 x 10-12 molar.

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Answer:

migraine

Explanation:

d

Volcanic eruptions are something that is not directly affected by either the sun or the moon.

Volcanic eruptions are geological events that occur due to the release of magma, gases, and other materials from beneath the Earth's surface. They are driven by internal forces within the Earth, such as plate tectonics and the movement of molten rock.

While the sun and the moon have significant influences on Earth's weather and climate, they do not directly cause volcanic eruptions. Volcanic activity is primarily associated with the movement of tectonic plates and the presence of magma chambers beneath the Earth's crust. The sun and the moon do not have a direct impact on these geological processes.

On the other hand, the sun and the moon do have important effects on the other options listed. The sun's energy drives wind patterns by heating the Earth's surface unevenly, creating temperature and pressure gradients that cause air to move.

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Water can exist in all three states—solid, liquid, and gas—under specific temperature and pressure conditions on Earth. These conditions are commonly found at the Earth's surface.

At temperatures below 0°C (32°F) and normal atmospheric pressure, water freezes and forms solid ice. In this state, water molecules are tightly packed in a crystalline structure.

At temperatures between 0°C and 100°C (32°F to 212°F) and normal atmospheric pressure, water exists as a liquid. In this state, water molecules have enough energy to move and flow freely.

At temperatures above 100°C (212°F) and normal atmospheric pressure, water vaporizes and becomes a gas. This process is known as boiling. In the gaseous state, water molecules have high energy and are widely dispersed.

These temperature and pressure conditions allow for the presence of liquid water in oceans, rivers, and lakes, solid water in the form of ice caps and glaciers, and gaseous water in the atmosphere as water vapor.

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The mass of air contained in an adult blue whale’s lungs at 0.5∘C and 1.03 atm, assuming the air behaves ideally is 6.03 kg.

a) Calculation for the number of molecules in a deep breath of air whose volume is 2.25 L at body temperature, 37∘C and a pressure of 740 torr, can be given by the following steps:

Volume of air in a deep breath,

V = 2.25 L

Temperature of air in a deep breath, T = 37+273 = 310 K

Pressure of air in a deep breath, P = 740 torr

Convert torr to atm. 1 atm = 760 torr

Pressure of air in a deep breath, P = 740/760 = 0.973 atm

The number of molecules in the deep breath, n = PV/RT

Where R is the gas constant. R = 0.08206 L atm K⁻¹ mol⁻¹

n = (0.973 atm × 2.25 L)/(0.08206 L atm K⁻¹  mol⁻¹  × 310 K)

n = 0.0925 mol

Number of molecules = n × Na

Where Na is Avogadro's number which is equal to 6.022 × 10²³ mol⁻¹

Number of molecules = 0.0925 mol × 6.022 × 1023 mol⁻¹

Number of molecules = 5.563 × 1022 molecules.

Therefore, the number of molecules in a deep breath of air whose volume is 2.25 L at body temperature, 37∘C, and a pressure of 740 torr is 5.563 × 10²² molecules.

b) Calculation for the mass of air contained in an adult blue whale’s lungs at 0.5∘C and 1.03 atm, assuming the air behaves ideally, can be given by the following steps:

Lung capacity of an adult blue whale = 5.0 × 103L

Volume of air in blue whale's lungs, V = 5.0 × 103L

Temperature of air in blue whale's lungs, T = 0.5+273 = 273.5 K

Pressure of air in blue whale's lungs, P = 1.03 atm

The number of moles of air, n = PV/RT

n = (1.03 atm × 5.0 × 103L)/(0.08206 L atm K⁻¹  the mass of air contained in an adult blue whale’s lungs at 0.5∘C and 1.03 atm, assuming the air behaves ideally is 6.03 kg.mol⁻¹ × 273.5 K)

n = 208.37 mol

The mass of air contained in an adult blue whale’s lungs, m = n × MM

Where MM is the average molar mass of air which is equal to 28.98 g mol⁻¹m = 208.37 mol × 28.98 g mol⁻¹ m

= 6034.58 g or 6.03 kg.

Therefore, the mass of air contained in an adult blue whale’s lungs at 0.5∘C and 1.03 atm, assuming the air behaves ideally is 6.03 kg.

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The reagent test being referred to in the question is likely the Jones test, which is commonly used to determine the presence of alcohols.

The Jones reagent is a mixture of chromic acid and sulfuric acid, which is a strong oxidizing agent. When alcohols are treated with Jones reagent, they are oxidized to either aldehydes or ketones depending on the type of alcohol present.
Secondary alcohols are oxidized to ketones, while primary alcohols are oxidized to aldehydes. The aldehydes formed from primary alcohols can further react with water to form aldehyde hydrates. These aldehyde hydrates can be further oxidized to form carboxylic acids.
Overall, the Jones test is a powerful reagent test that can be used to identify the presence of alcohols in a sample. By oxidizing the alcohols, the test can provide information about the chemical composition of the sample being tested.

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The chemical reaction that we observe with the change in absorbance measured by the spectrophotometer is the oxidation of guaiacol by hydrogen peroxide (H2O2).

This chemical reaction is related to the activity of turnip peroxidase in that it is catalyzed by this enzyme. Turnip peroxidase is an enzyme that catalyzes the oxidation of a wide range of substrates, including guaiacol. Guaiacol, in particular, is a colorless compound that, upon oxidation, turns brown in the presence of peroxidase.Turnip peroxidase catalyzes the oxidation of H2O2 in the presence of guaiacol, resulting in the formation of a brown-colored product. This reaction results in a change in absorbance that can be measured using a spectrophotometer. Thus, the activity of turnip peroxidase is related to the rate of the oxidation of guaiacol by H2O2.

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The new (final) volume of the sample of gas is equal to 0.1922 \(cm^3\).

Given the following data:

To determine the new (final) volume of the sample of gas, we would apply Boyle's law:

Mathematically, Boyle's law is given by the formula;

\(PV = k\\\\P_1V_1 = P_2V_2\)

Where;

Making \(V_2\) the subject of formula, we have:

\(V_2 =\frac{P_1V_1}{P_2}\)

Substituting the given parameters into the formula, we have;

\(V_2 = \frac{47.8 \times 3}{746} \\\\V_2 = \frac{143.4}{746}\)

New volume = 0.1922 \(cm^3\)

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Left- and right-handed mirror image molecules are known as stereoisomers. Stereoisomers have the same molecular formula and the same connectivity of atoms, but the arrangement of the atoms in space is different. Stereoisomers are formed due to the presence of a chiral center in the molecule

A molecule is said to be chiral if it has a non-superimposable mirror image. Chiral molecules cannot be superimposed on their mirror image. This means that the left- and right-handed mirror images of a chiral molecule are not identical and are not superimposable on each other. Chiral molecules are very important in the field of biology and pharmacology because they interact differently with other chiral molecules in biological systems and can have different biological activities or therapeutic effects.Most biological molecules, such as amino acids, sugars, and DNA, are chiral. Amino acids and sugars are chiral because of the presence of an asymmetric carbon atom in their structures. DNA is chiral because of the helical structure of its double-stranded form. The handedness of chiral molecules can have significant implications for their biological activity, as the interaction between two chiral molecules can depend on their relative handedness.The study of stereoisomers is important in the field of organic chemistry and biochemistry. Understanding the stereochemistry of molecules is essential for understanding their properties and behavior. Stereoisomers can have different physical properties, such as melting point and solubility, and different biological activities, such as receptor binding and enzyme catalysis.

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what are the questions?

a. KOH (aq) + HCl (aq) → KCl (s) + H₂O (l)

b. NaOH (aq) + HCl (aq) → NaCl (s) + H₂O (l)

Chemistry

Unit 0

Aqueous Solutions

We are given "Potassium hydroxide reacts with hydrochloric acid to form salt and water."

a)

From the question, we can figure out 1.) if the reaction exists and 2.) if it does exist, then reaction prediction.

Remembering solubility rules, we have:

Therefore, we can conclude that both potassium hydroxide and hydrochloric are both aqueous solutions:

KOH (aq) + HCl (aq) → ? + ?

We are also given from the problem that the reaction produces a salt and water.

We also use the double replacement reaction to do reaction prediction of the proposed salt:

KOH (aq) + HCl (aq) → KCl (s) + H₂O (l)

Hence, this is our answer to a.).

b.)

We are given that we switch the compound KOH (potassium hydroxide) with sodium hydroxide.

We can use the same steps as a.) to figure out our new reaction. Since we already know that Group IA compounds are soluble, we know that NaOH is soluble:

NaOH (aq) + HCl (aq) → ? + H₂O (l)

Following the same steps, we can simple do a double replacement reaction prediction to find the missing salt:

NaOH (aq) + HCl (aq) → NaCl (s) + H₂O (l)

We see that we would still be able to produce a [different] salt and the reaction does exist/run. And we have our final answer for b.).

Note:

While the salts produced (KCl and NaCl) are solids, they are soluble in water. Since we are running only a forward reaction, we know that we are producing a solid and liquid water. Usually, we would probably see these reactions in equilibrium (represented with a ⇆).

This also delves into the concepts of saturation.

Answer:

word equation

Potassium hydroxide+hydrochloric acid=salt and water.

KoH+HCL_____>KCL+H2O

balanced already

when

sodium hydroxide is used instead of potassium hydroxide

sodium hydroxide+hydrochloric acid=salt and water.

NaoH+HCL_____>NaCl+H2O

The molar concentration of ammonia is 2.976M.

Molarity of HCl = number of moles/ volume

Number of moles = Molarity of Hcl * volume

Hence the number of moles of ammonia =\(14.88 * 10^{-3}\)

From question volume of ammonia =\(5 * 10^{-3}\)

Molarity = \(14.88 * 10^{-3}/5 * 10^{-3}\)

Molarity  \(=2.976\)

What is meant by molar concentration?

Molar concentration is the most effective way of describing a solute concentration in a solution. Molarity is described as the total number of moles of solute dissolved per liter of solution,i.e., M = mol/L.

How do you calculate the molar concentration?

To calculate the Molar Concentration, we will find the molar concentration by dividing the moles by the liters of water used in the solution.

Thus, the molar concentration of ammonia is 2.976M

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Answer:

the graph shows that the filtrated solution was acidic but when we add nh3 (base) ,acid base reaction take place and in this reaction salt and water are form by this oh-ion concentration keep on increasing and change ph from 4 to 10

The molecule that has the highest HOMO - LUMO gap is the dye with absorption maxima at 530 nm.

We know that the term HOMO stands for the highest occupied molecular orbital while the LUMO stands for the lowest unoccupied molecular orbital of the molecule that is under consideration.

The HOMO - LUMO gap shows us the extent to which it is possible to have the electrons that in a conjugated system being promoted from the HOMO to the LUMO and this is also a measure of the degree of conjugation in the molecule.

Recall that when the wavelength is longer, it implies that the frequency is higher and that the LUMO - HOMO gap is not as wide. If the reverse is the case, then implies that the HOMO - LUMO gap is quite wide as is evident from what we have in the question as shown.

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Answer:

9.9966788 x 10^-1