50 POINTS! Fill in the chart below to identify and describe the functional groups associated with organic chemistry.

Name General Structure Properties/Uses
Alcohol
Aldehyde
Ketone
Fatty acid
Ether

Answer: chitin

Explanation:

your mom :)

Answer:

pi

Explanation:

In chemistry, a covalent bond is formed by the overlap of atomic orbitals. The bond formed may be a sigma bond or a pi bond depending on the way the atomic orbitals are overlapped.

If the overlap occurs in a side-to-side manner, the bond formed is said to be a pi bond. Pi bonds are common in organic species having multiple bonds such as ethene and benzene.

The molar standard Gibbs energy (ΔG°) for 14N14N cannot be determined without additional information such as the standard enthalpy change (ΔH°) and standard entropy change (ΔS°).

To determine the molar standard Gibbs energy (ΔG°) for a molecule, we need to use the formula:

ΔG° = -RT ln(K)

Where:

R is the gas constant (8.314 J/(mol·K))

T is the temperature in Kelvin (298.15 K)

K is the equilibrium constant

For the reaction N₂ + N₂⇌ 2N₂  (14N14N), we need to find the equilibrium constant, K, using the vibrational frequencies and the rotational constant.

The vibrational frequency (ν˜) is given as 2.36×10^3 cm^(-1), and the rotational constant (b) is given as 1.99 cm^(-1).

First, we need to convert the units of the vibrational frequency and rotational constant to energy units (Joules). Since 1 cm^(-1) is equivalent to 1.986 × 10^(-23) J, we can calculate:

ν˜ = 2.36 × 10^3 cm^(-1) × 1.986 × 10^(-23) J/cm^(-1) = 4.6816 × 10^(-20) J

b = 1.99 cm^(-1) × 1.986 × 10^(-23) J/cm^(-1) = 3.94614 × 10^(-23) J

Next, we can calculate the equilibrium constant using the formula:

K = exp(-ΔG°/RT)

Since we are given that the ground electronic state is nondegenerate, we know that the number of translational and electronic states is constant.

Threfore, ΔG° = ΔH° - TΔS°

Where ΔH° is the standard enthalpy change and ΔS° is the standard entropy change. However, since we are not given these values, we cannot calculate ΔG° directly.

If you have the required information, such as the enthalpy and entropy changes, please provide them, and I can help you calculate the molar standard Gibbs energy.

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Changes in precipitation and snowmelt patterns, withdrawal of ground water for drinking, irrigation, and other human uses, and impervious paved surfaces that prevent precipitation from recharging ground water are all stressors that can deplete aquifers. It may take thousands of years to replenish some deep aquifers.

There are two types of groundwater contaminants: point sources and distributed, or non-point sources. Point sources include landfills, leaking gasoline storage tanks, leaking septic tanks, and accidental spills.

Deforestation, unscientific agricultural methods, chemical effluents from industries, and a lack of sanitation all contribute to groundwater pollution, rendering it unusable.

Thus, Some deep aquifers may take thousands of years to fill again.

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A demand O2 delivery system utilizes a "pressure drop" mechanism to trigger oxygen flow.

In a demand oxygen delivery system, the flow of oxygen is triggered by a pressure drop that occurs when the user initiates inhalation. When the user takes a breath, the drop in pressure in the system activates the mechanism that releases oxygen.

This mechanism can be a valve or regulator that opens to allow oxygen to flow from the source to the user.

The pressure drop required to trigger the oxygen flow depends on the specific design of the system and can vary. Generally, the pressure drop is set at a level that ensures the user's inhalation effort is sufficient to activate the oxygen flow while maintaining a safe and reliable operation.

The pressure drop is typically calibrated and adjusted during the manufacturing process to meet the desired specifications and requirements of the system.

In summary, a demand oxygen delivery system relies on a pressure drop mechanism to initiate the flow of oxygen. This mechanism ensures that oxygen is released when the user inhales, providing them with the required oxygen supply.

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Answer:

Soil contains minerals such as Iron, Zinc, Nitrogen compounds, etc. that are all essential to sustaining life. It also holds water and makes it available for plants to use. Soil also contains ores from which we can extract metals such as iron, copper, gold, and aluminum.

(Hope this helps) Sky

Answer:

= 2.2 g pf S. produced

Explanation:

Balanced Reaction equation:

\(2H_{2} S + SO_{2}\) →  \(3S + 2H_{2} O\)

1 mole of H2S - 34.1g

? moles - 3.2g

= 3.2/34.1 = 0.09 moles of H2S

Also,

1 mole of S02 - 64.07 g

? moles - 4.42g

= 4.42/64.07 = 0.069 moles of SO2

Meaning SO2 is the limiting reagent

Finally, 3 moles of S -  32g of sulphur

0.069 mole = ? g of Sulphur

= 0.069 x 32

= 2.2 g pf S.

Answer:

Explanation:

It's going to be the height of the drop. That is kept as a constant. The dependent variable is how high each ball bounces.

The kind of bond they will form is an ionic bond where one beryllium atom will donate electrons to two chlorine atoms (option A).

Ionic bond is a type of chemical bond where two atoms or molecules are connected to each other by electrostatic attraction.

Ionic bonds are formed by atoms with opposite charges i.e. negative (-) and positive (+) charge. The metal is usually positively charged while the nonmetal is usually negatively charged.

According to this question, the molecule beryllium chloride has one beryllium atom, a metal, and two chlorine atoms, nonmetals. This means that an ionic bond will be formed by beryllium atom and chlorine atom.

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We can say that when performing qualitative tests, one should take notes regarding the measurements of the substance or the observations being made regarding the morphology of cells.

This is a type of test that helps scientists measure is a substance is present or not, as well as morphological characteristics of cells in the case of the experiment being biological in nature. In these cases, we should write down any information regarding measurements of the substance we are searching for, or in the case of cells, any morphological characteristics that can be observed.

Therefore, we can confirm that when performing qualitative tests, one should take notes regarding the measurements of the substance or the observations being made regarding the morphology of cells.

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Answer:

Explanation:

Comment

Distance is the key fact you have to consider. And  you have seen this phenomenon yourself.

I don't know if you live in the city or the country. It would be easier to explain to a person living in the country, Suppose you live near a road (a dirt road). You see the ruts moving away from you. but did you also notice that they seem to come together? The distance between the ruts gets smaller. Now suppose someone comes out to get their mail. They are about 1 1/2 miles away. Don't they look smaller than they really are?

If you live in the city, you can see the same sort of thing, but it's hard to pick an example to use. I'm thinking of something like a flag on a hill that is part of a park. If you move away  from both, don't they look smaller?

That's what happens, but instead of miles, you are talking about billions of miles -- sometimes light years (the distance light travels in a year). The stars are so big that even these huge distances do not prevent us from detecting them.

Answer:

I believe it's B oxygen

Explanation:

Answer:

D, carbon dioxide.

Explanation:

In order to survive, animals need oxygen, food, and shelter.

The new temperature of the gas is approximately -13.21 degrees Celsius.

To solve this problem, we can use the combined gas law equation, which relates the initial and final conditions of a gas sample:

(P1 * V1) / T1 = (P2 * V2) / T2

Given:

Initial temperature (T1) = 75 degrees Celsius = 75 + 273.15 Kelvin = 348.15 Kelvin

Initial pressure (P1) = 760 mmHg

Final pressure (P2) = 566 mmHg

Volume is constant (V1 = V2)

Let's substitute the values into the equation:

(760 mmHg * V1) / 348.15 K = (566 mmHg * V1) / T2

Canceling out the common terms and rearranging the equation, we get:

T2 = (566 mmHg * 348.15 K) / 760 mmHg

Calculating the value, we find:

T2 = 259.94 K

Converting back to degrees Celsius:

T2 = 259.94 K - 273.15 = -13.21 degrees Celsius

Therefore, the new temperature of the gas is approximately -13.21 degrees Celsius.

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The heat of vaporization of benzene is 15.2 kJ/g.

In order to determine the heat of vaporization of benzene, we need to use the formula:

Heat of vaporization = heat required/mass of sample converted

The heat required to convert a 9 g sample of aldehyde from the liquid to gas phase is 5.2 kJ.

Therefore, the heat required to convert an 18 g sample of aldehyde from the liquid to gas phase is:Heat required = 5.2 kJ x (18 g/9 g) = 10.4 kJ

Now, we can use the heat required to convert a 26.4 g sample of benzene from the liquid to gas phase to determine the heat of vaporization of benzene:

Heat of vaporization = 26.4 g x (10.4 kJ/18 g) = 15.2 kJ/g

Therefore, the heat of vaporization of benzene is 15.2 kJ/g.

Explanation:

Benzene (C6H6) has a heat of vaporization of 30.8 kJ/mol. Its molecular weight is 78.11 g/mol.

So, for benzene: Heat of vaporization = (30.8 kJ/mol) / (78.11 g/mol)

Heat of vaporization = 0.394 kJ/g

The actual heat of vaporization of benzene is 38.8 kJ/mol or 0.496 kJ/g.

The deviation in the measured value can be due to some experimental errors or impurities in the sample used.

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Answer:

find how much gold weighs by volume based on the karat and factor that in to find the answer  

Explanation:

Answer:

Explanation:

Molar volume at STP = 22.4L

So 0.084 mole of CO2 at STP has volume of 22.4*0.084 = 1.882L

Combined Gas Law: P1V1/T1 = P2V2/T2

760*1.882/273 = 790*2.1/Temperature

Temperature = 790*2.1*273/760/1.882

= 316.6K

Radioactive isotopes can be used in studies of metabolic pathways because they allow scientists to track the movement and transformation of molecules within biological systems.

Radioactive isotopes are atoms that contain an unstable nucleus and emit radiation as they decay. These isotopes can be incorporated into molecules involved in metabolic pathways, such as carbohydrates, proteins, or nucleic acids, by replacing a stable atom of the same element within the molecule.

One commonly used radioactive isotope in metabolic studies is carbon-14 (\(^{14}C\)), which is an isotope of carbon with six protons and eight neutrons. By substituting a stable carbon atom with \(^{14}C\) scientists can follow the molecule's journey through different metabolic reactions.

When a radioactive molecule enters a metabolic pathway, its behavior mirrors that of its stable counterpart. It undergoes the same biochemical transformations, reactions, and interactions.
However, because it emits radiation, it becomes detectable and measurable. This allows researchers to determine the location, concentration, and rate of the molecule's movement within the biological system.

Radioactive isotopes can provide detailed information about metabolic pathways. By analyzing the decay of the radioactive atoms, scientists can calculate the rate of specific reactions and the flux of molecules through different metabolic intermediates.
They can identify the points at which metabolic pathways branch or converge, and determine the relative importance of different metabolic routes. This information helps in understanding the regulation and dynamics of metabolic processes.

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Answer: THE ANSWER IS D

Explanation:

an alcohol is a hydrocarbon chain with an hydroxyl group (OH)

A, B, AND C ARE ALL ALCOHOLS, SO THE ANSWER IS D

Answer:

The angle of sunlight varies on different parts of Earth at different times.

Explanation:

The seasons are a result of the Earth's tilt and are caused by the differential intensity of sunlight on different areas of Earth across the year.

Hope this is helpful to you!

Answer:

c

Explanation:

The coefficient of Al in the balanced chemical equation has been 2. Thus, option B is correct.

The balanced chemical equation has been termed as the equation where the atoms of each element have been the same on the product and the reactant side.

The given chemical equation has consisted of 2 atoms of Br on the reactant side and 3 atoms of Br on the product side.

The atoms have been balanced with the addition of coefficient 3 on the reactant side, and 2 on the product side. This will give the 6 atoms of Br on both the products and the reactant's side.

\(\rm Al\;+\;3\;Br_2\;\rightarrow\;2\;AlBr_3\)

The atoms of Al have become imbalanced. The Al atoms can be balanced by the addition of 2 as a coefficient on the reactant side. This will provide 2 atoms of Al on both the product and the reactant side.

\(\rm 2\;Al\;+\;3\;Br_2\;\rightarrow\;2\;AlBr_3\)

The coefficient of Al in the balanced chemical equation has been 2. Thus, option B is correct.

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Answer:

C

Explanation:

Read it from my 8th grade text book a few years back.

Answer:

C   l i f e

Explanation:

Answer:

The correct answer is (C) 0.2 mole MgCl2

Explanation:

Answer:

answer is here bit.^{}ly/3gVQKw3

When, where, and how much a gene is expressed in a cell depends on the histones and epigenetic elements working together.

In eukaryotic cells, there are proteins called histones that serve two purposes. They support the maintenance of DNA in a compact state and control the loosening the tightening of DNA strands, which controls the expression of genes.

Epigenetic factors are substances that alter the gene to control how a gene expresses itself. Both of these modifications are not heritable and do not result in mutations. These are transient alterations such DNA remodeling, methylation, and alkylation, among others.

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The percent yield of the reaction is 37.2%. The theoretical yield, or maximum amount of product that can be produced based on the amount of limiting reagent utilized in the reaction, must first be ascertained in order to calculate the percent yield.

In chemistry, the percentage yield is used to compare the actual outcome of a reaction to the maximum outcome anticipated.

Several institutions place a high value on yield because past yield data enables them to forecast the number of students they will need to accept to order to reach their enrollment goal. Fewer pupils may be admitted if the school's yield rates historically have been high.

We can use stoichiometry to calculate the theoretical yield of p-nitro-toluene:

1 mole of toluene produces 1 mole of p-nitro-toluene

The molar mass of toluene is 92.14 g/mol, and the molar mass of p-nitro-toluene is 137.14 g/mol.

550.0 g of toluene is equivalent to 5.97 moles (550.0 g / 92.14 g/mol).

Therefore, the theoretical yield of p-nitro-toluene is:

5.97 moles of p-nitro-toluene = 5.97 moles of toluene

5.97 moles of p-nitro-toluene x 137.14 g/mol = 819.9 g

we can calculate the percent yield:

Percent yield = (actual yield / theoretical yield) x 100%

In the given experiment, the actual yield of p-nitro-toluene is 305 g.

Percent yield = (305 g / 819.9 g) x 100% = 37.2%

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Answer:

Explanation:

Part A

2 Al + 3 Cl_2 ==>  2 AlC_3

Part B

The balanced equation tells you for every 2 mols of Al you will produce 2 mols of AlCl_3

Find the mass of 1 mol of AlCl_3

Mass Al =                    27

Mass 3Cl = 3*35.5 = 106.5         Add

Mass 1 mol AlCl_3 = 133.5

Answer: 2 mols of AlCl_2 = 267.0 grams

Answer:

431 mL

Explanation:

This is a question about the relationship between the volume and temperature of a gas. The volume of a gas is directly proportional to its temperature in kelvins when the pressure is held constant. This relationship is described by Charles’s Law.

To solve this problem, we need to convert the temperatures from degrees Celsius to kelvins by adding 273.15. So 27°C is equivalent to 300.15 K and -78.5°C is equivalent to 194.65 K.

Let’s call the initial volume of the balloon V1 and its initial temperature T1. The final volume of the balloon will be V2 and its final temperature T2. According to Charles’s Law, the relationship between these variables can be expressed as:

V1/T1 = V2/T2

Substituting the known values into this equation, we get:

665 mL / 300.15 K = V2 / 194.65 K

Solving for V2, we find that the final volume of the balloon is approximately 431 mL.

Answer:

Metrics are measures of quantitative assessment commonly used for assessing, comparing, and tracking performance or production.

Dimensional analysis is the analysis of the relationships between different physical quantities by identifying their base quantities and units of measure and tracking these dimensions as calculations or comparisons are preformed

Answer: both the different glycosidic linkages of the molecules and the different hydrogen bonding partners of the individual chains.

Explanation:

Glycogen is a polysaccharide of glucose which is a form of energy storage in fungi, bacteria and animals. Glycogen is primarily stored in the liver cells and skeletal muscle.

The difference in interchain stability between the polysaccharides glycogen and cellulose is due to the different glycosidic linkages of the molecules and the different hydrogen bonding partners of the individual chains.