Given: 4.0 mL of methyl salicylate
a) Calculate the theoretical yield of salicylic acid from the given starting mass of methyl salicylate. Please also include the units from the calculations.
b) What key change do you expect to see in the IR spectrum when the ester starting material is converted to the carboxylic acid?
c) What key change do you expect to see in the 1H NMR spectrum when the ester starting material is converted to the carboxylic acid?

Answer:

Explanation:

Here, we want to get the name for the given chemical formula

Looking at the formula, we look at the names of the element

The names are sodium and fluorine

We write the name of the metal element first, then the non-metal atom

Thus, we have it as

Kc = [GSH]2[NADP+]/[GSSG] [NADPH] [H+]= (2.47 × 10^-8)^2 (1.00 × 10^-5)/(3.59 × 10^-5)(1.00 × 10^-4) (1.00 × 10^-7)= 1.073. Hence, the answer is option A. 1.073.

The equilibrium constant for the reaction is given by the ratio of the product of the concentrations of the products raised to their stoichiometric coefficients to the product of the concentrations of the reactants raised to their stoichiometric coefficients.

However, the given reaction is as follows;glutathione + NADPH + H+ ↔ reduced glutathione + reduced glutathione + NADP+The corresponding equilibrium constant expression is,Kc = [GSH]2[NADP+]/[GSSG] [NADPH] [H+]Where;[GSH] = Concentration of glutathione[NADPH] = Concentration of NADPH[H+] = Concentration of hydrogen ions[GSSG] = Concentration of reduced glutathione.

On substitution,Kc = [GSH]2[NADP+]/[GSSG] [NADPH] [H+]= (2.47 × 10^-8)^2 (1.00 × 10^-5)/(3.59 × 10^-5)(1.00 × 10^-4) (1.00 × 10^-7)= 1.073Hence, the answer is option A. 1.073.

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Answer:

overall I think one answer

The ion which will combine with sulfide in a 2:1 ratio is Choice B: Ammonium.

The sulfide ion is negatively charged and needs two electrons to complete it's octet;

In essence, it needs two positive charges.

However, since the question asks Which ion will combine with sulfide in a 2:1 ratio.

The ion is ammonium ion; NH4+

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Answer:

m = 0.544 moles/kg

Explanation:

To do this, we need to use the expression for molality of a solution which is:

m = n / kg water

Where:

n: moles of solute

m: molality of solution

In this case, we have the moles of the solute, which is the C6H12O6 and the grams of water, and these grams would have to be turn into kg. Let's do this first:

kg of water = 150 g * 1 kg / 1000 g = 0.150 kg of water.

Now, replacing in the above expression of molality, we can calculate the molality of the solution:

m = 0.0816 / 0.150

Ala-Val dipeptide at neutral pH: Ala is negatively charged (COO-), Val is positively charged (NH3+).

(Ala-Val) is a dipeptide composed of two amino acids: alanine (Ala) and valine (Val). At neutral pH, the carboxyl group (COOH) of alanine loses its hydrogen ion (H+) and becomes negatively charged (COO-), while the amino group (NH2) of valine gains a hydrogen ion (H+) and becomes positively charged (NH3+).

The dipeptide can be represented as follows:

         H       H

         |       |

   H3N+-CH-C-COO-

         |       |

         CH3     CH(CH3)2

Here, the NH3+ represents the positively charged amino group of valine, and the COO- represents the negatively charged carboxyl group of alanine. The hydrogen atoms (H) are attached to the appropriate positions on the carbon backbone.

Please note that this is a simplified representation, and the actual structure of the dipeptide may have different conformations depending on the specific arrangement of atoms and bonds.

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Answer:

The answer is D Bill Bass

Explanation:

Remember it from the lesson and I took the test.

Answer:

4202.1 K

Explanation:

From;

PV=nRT

P= pressure of the gas = 18.5 bar

V = volume of the gas = 115L

n= number of moles of the gas =  6.1 mole

T= temperature of the gas = ?

R = gas constant = 0.083 L⋅bar⋅K−1⋅mol−1

T = PV/nR

T = 18.5 * 115/6.1 * 0.083

T = 2127.5/0.5063

T= 4202.1 K

Answer:

d. oligomer it is the correct answer also if you would just search that up it pops up

Chemical weathering is significant in tropical rainforests as these regions experience heavy rainfall, high humidity, and high temperatures, making these regions more susceptible to chemical weathering.

Rocks become weakened and disintegrate into smaller pieces as a result of weathering, a significant physical phenomena. Physical, chemical, mechanical, and biological modalities can all be used to carry out the process. The ideal illustration of chemical weathering is acid rain.

You have likely observed that no two rocks are exactly alike in appearance. Some appear to have been sculptor-carved. Some have been hollowed out to resemble caves, while others appear to have been painted crimson.

Rocks undergo chemical weathering, or the breakdown of rocks by chemical processes, which is one of the reasons they have such a variety of appearances. You will learn about the various types of chemical weathering and how exposure to substances like water, oxygen, carbon dioxide, and acids can change the minerals found in rocks in this lesson.

We noted that one method rocks are broken down is by chemical weathering. It's crucial to stress that rocks are truly being chemically transformed rather than simply crumbling into smaller rocks because this is the actual chemical change that is occurring. To put it another way, following chemical weathering, we are left with something different from what we started with.

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Chemical weathering occurs most rapidly in which of the following climates?

a. Desert

b. Arctic tundra

c. High mountain slopes

d. Tropical rainforest

Answer: a compound!

Explanation: a compound is something that contains two or more elements that are chemically combined in a fixed proportion!

The molecule in this pizza is a "protein" because it is already mentioned and cleared from the question that it is a polymer, hydrophilic, and it's made up of oxygen, hydrogen, and sulfur atoms.

Explanation :

Amino acid is a simple term defined as an organic chemical compound that comprises of an acidic carboxyl group (COOH), a basic amino group (NH_2NH2).

It is unique chain group.

Protein : The hydrophilic, macromolecule (polymer) that is made as a result of the unison of the chain of the many amino acids is known as Protein.

Protein normally comprises of various elements such as Oxygen (O2), Hydrogen (H2), Sulphur atoms.

Hence, it is pretty much clear from the above explanation that molecule in a pizza that is a polymer, has O2, H2 and Sulphur atoms and that is also hydrophilic is a molecule of "Protein".

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Stereochemistry of the carbon at the 17 position for 17-a-estradiol and 17-b-estradiol:

Stereochemical relationship between the two isomers:

17-a-estradiol and 17-b-estradiol are enantiomers. This means that they are mirror images of each other, and they cannot be superimposed.

A diagram of the two isomers, with the hydroxyl group at the 17 position highlighted is attached.

The 17-a-estradiol molecule is shown on the left, and the 17-b-estradiol molecule is shown on the right. The hydroxyl group at the 17 position is on the R side of the 17-a-estradiol molecule, and it is on the S side of the 17-b-estradiol molecule.

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Answer:

1. true

2. false

Explanation:

PROMISE PROMISE to make the most of the su in the WORLD CUP and chemica are u doing the meetings with

When the pressure is changed to 2.76 atm, is approximately 754.19 Kelvin. When the pressure inside the steel bottle is changed to 2.76 atm while containing argon gas at standard temperature and pressure (STP), the final temperature of the gas will increase.

According to the ideal gas law, PV = nRT, where P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature in Kelvin. Since the volume remains constant in this case, we can rearrange the equation as P₁/T₁ = P₂/T₂, where P₁ and T₁ are the initial pressure and temperature, and P₂ and T₂ are the final pressure and temperature. Given that the initial conditions are at STP, the initial temperature is 273.15 K. If we substitute the values into the equation, we get 1 atm / 273.15 K = 2.76 atm / T₂. Solving for T₂, we find T₂ = (273.15 K) * (2.76 atm / 1 atm) ≈ 754.19 K.Therefore, the final temperature of the argon gas in the steel bottle, when the pressure is changed to 2.76 atm, is approximately 754.19 Kelvin.

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Answer:

B

Explanation:

Non metals do not conduct electricity

Answer:

D.

Explanation:

I saw it in the textbook

Answer:

The hydroxide [OH-] concentration of the solution is 1.26*10⁻⁵ M.

Explanation:

The pOH (or potential OH) is a measure of the basicity or alkalinity of a solution.

POH indicates the concentration of hydroxyl ions [OH-] present in a solution and is defined as the negative logarithm of the activity of hydroxide ions (that is, the concentration of OH- ions):

pOH= -log [OH-]

A solution has a pOH of 4.90. Replacing in the definition of pOH:

4.90= -log [OH-]

Solving:

-4.90= log [OH-]

1.26*10⁻⁵ M= [OH-]

The hydroxide [OH-] concentration of the solution is 1.26*10⁻⁵ M.

Answer:

carbonation

Explanation:Please dont delete my answer again cause its correct, I had the same question on my test so I know its righ!!!!

Answer:

Yea.....where is the article and the 6 questions?

Answer:

Answering

Explanation:

do u want us to tell u what we got?

Stomatal pores in plants regulate the amount of water and solutes within them by opening and closing their guard cells using osmotic pressure. In order for plants to produce energy and maintain cellular function, their cells undergo the highly intricate process of photosynthesis .

Answer:

A

Explanation:

I believe the Correct answer would be A

Answer:

I think c

Explanation:

sorry if I am wrong:(

I did not learn about this:((

The given reaction involves the conversion of CN⁻ ion to HCN. This reaction is reversible, meaning that HCN can also convert back to CN⁻ under certain conditions. The conditions under which this reaction can be reversed are dependent on the nature of the reactants and products.

In this case, the reaction involves a strong base (NaCN) and a strong acid (HCl). Therefore, the reaction will proceed to completion in either acidic or basic conditions. However, if we want to reverse the reaction, we need to change the conditions in favor of the reactants.

Under basic conditions, the reaction can be reversed by adding an acid to protonate CN⁻ to form HCN. Under acidic conditions, the reaction can be reversed by adding a base to deprotonate HCN to form CN-.

Alternatively, the reaction can also be reversed using Pd/C as a catalyst. Pd/C can facilitate the conversion of HCN to CN⁻ by promoting the addition of hydrogen gas (H₂). This reaction can occur under mild conditions, making it a useful method for reversing the reaction.

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Molecular solids are made up of individual molecules held together by intermolecular forces such as van der Waals forces, dipole-dipole interactions, and hydrogen bonding. When these solids melt, only the intermolecular forces are disrupted, resulting in relatively low melting points.

In contrast, metallic solids are made up of metallic atoms held together by metallic bonding, ionic solids are made up of ions held together by ionic bonds, covalent-network solids are made up of atoms held together by covalent bonds in a giant network, and semiconductors are materials with properties between those of a conductor and an insulator. These types of solids have higher melting points because the bonds holding the atoms or ions together are stronger.

When some solids melt, the only forces disrupted are intermolecular forces, resulting in relatively low melting points. This description fits molecular solids, as they are held together by relatively weak intermolecular forces (such as hydrogen bonding in H2O(s), ice) which can be broken up more easily, leading to lower melting points. Other types of solids like metallic, ionic, and covalent-network solids have stronger bonding forces and generally higher melting points.

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16) 100- 273= -173°celsius

17) -73°Celsius

18) °Celsius

19) 77°Celsius

At 298 K, the reaction's standard free energy change is G0 = - 115 kJ. The calculated values of Go are very helpful in determining whether a reaction will take place spontaneously if the reactants and products are combined under typical circumstances.

Standard entropy change (H°) is 50.6 kJ/mol at 25 °C, and the absolute entropies of the products and reactants are S°(N2H4) = 121.2 J/(mol•K), S°(N2) = 191.6 J/(mol•K), and S°(H2) = 130.7 J/(mol•K).

According to the Gibbs phase rule, where n is the number of thermodynamic degrees of freedom in the system, the relationship between the number of phases (p) and components (c) in a given alloy under equilibrium conditions at constant pressure is given as p+n=c+1.

The calculated values of Go are very helpful in determining whether a reaction will take place spontaneously if the reactants and products are combined under typical circumstances. The internal, kinetic, and potential energies of a system are simply added together to form the total energy E: E=me=m(u+ke+pe)=U+KE+PE.

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Answer:

they all have two electrons in their outermost shell

The elements of group 2 are alkaline earth metals that have two electrons in their outermost shell. So they have similar chemical and physical properties and tend to become positive ions in bond formation.

The elements present in group 2 include Beryllium, Magnesium, Calcium, Strontium, Barium, and Radium.  

The elements of group 2 are similar in their physical and chemical properties as all the elements have the same number of valence electrons. All alkaline earth metals are silvery-white-colored solids under normal conditions. They are also shiny and quite reactive.

The general electronic configuration of group 2 elements is ns². The alkaline earth metals have fully filled s-orbital in their valence shells, they tend to lose two electrons to produce cations with +2 charge.

Therefore, the elements of group 2 are electropositive in nature. Therefore, all the given statements about group 2 of the periodic table are true.

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The frequency of the radiation used in spectroscopy techniques such as infrared spectroscopy can be used to determine the functional groups present in a molecule. This is because different functional groups absorb radiation at specific frequencies, which can be identified by the instrument.

Infrared spectroscopy works by passing infrared radiation through a sample and measuring how much is absorbed at different frequencies. Each functional group has a unique pattern of absorption frequencies, allowing for the identification of specific functional groups in a molecule. For example, the presence of a carbonyl group in a molecule can be identified by a peak around 1700 cm^-1 in the infrared spectrum, while the presence of an alcohol group can be identified by a peak around 3500 cm^-1.
Other spectroscopy techniques such as nuclear magnetic resonance (NMR) can also be used to determine the functional groups present in a molecule. NMR works by measuring the magnetic properties of the nuclei in a sample, which are influenced by the chemical environment around them. This can be used to identify the types of atoms and functional groups present in a molecule.
Overall, the frequency of the radiation used in spectroscopy techniques is an important tool for identifying functional groups in molecules. By analyzing the unique absorption patterns of different functional groups, scientists can gain valuable insights into the structure and composition of complex molecules.

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