Rank the following compounds from weakest to strongest intermolecular forces. Justify your answer.
1. a. H2S b. I2 c. N2 d. H2O
2. a. H2Se b. H2S c. H2Po d. H2Te

When gases in two different containers are same , at same temperature, and same pressure then the number of moles must also be same.

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Answer:

A chemical bond is the physical process that causes atoms and molecules to be attracted to each other and held together in more stable chemical compounds. A double or triple bond occurs if there are two or three electron pairs that are shared between two of the same atoms.

Explanation:

For example, a gold chemical bond is 'Au' + 'Au', is a chemical bond as it is a double of the same atom.

Answer:

1.0 moles

Explanation:

we are given the number of atoms of the ionic compound, carbon dioxide (\(\rm CO_2\)) which is 6.02x10²³ and we want to find the number of moles in \(\rm CO_2\).

recall that, there are approximately 6.02x10²³ atoms in a mole of any substance (which is actually Avogardro's number, \(\rm N_a=6.02214x10^{23} \: mol^{-1}\) )The answer therefore can be found by dividing given the number of atoms of \(\rm CO_2\) by the Avogadro's number.so, dividing the given number of atoms of \(\rm CO_2\) by the Avogadro's number yields approximately 1.0

Hence,There are approximately 1.0 moles in 6.02x10²³ atoms of \(\rm CO_2.\)

Answer: true

It speeds around the Sun every 88 days, traveling through space at nearly 29 miles (47 kilometers) per second, faster than any other planet. Mercury spins slowly on its axis and completes one rotation every 59 Earth days.

Explanation:

Answer:

Fe =52.2%, O = 44.9%, H = 2.81%

Explanation:

Percentage composition is also known as percentage by mass.

First, find the Mr of the compound.

Mr of Fe(OH)₃ = 55.8 + (16 × 3) + (1 × 3)

= 106.8

Now Divide the mass of the element, as per the compound, by the Mr of the compound found and times that by 100.

% composition of Fe = \(\frac{55.8}{106.8}\) × 100 = 52.2%

% composition of O = \(\frac{16*3}{106.8}\) × 100 = 44.9%

[There are 3 oxygen atoms in the compound Fe(OH)₃, so we will multiply the atomic mass of oxygen with the number of atoms in the compound: 16×3 ]

% composition of H = \(\frac{1*3}{106.8}\) × 100 = 2.81%

[There are 3 hydrogen atoms in the compound Fe(OH)₃, so we will multiply the atomic mass of hydrogen with the number of atoms in the compound: 1×3 ]

The symmetries that are consistent with a two-dimensional crystal include translation; 1-, 2-, 3-, 4-, and 6-fold rotations; reflection and glide.

Therefore, the answer is option C: Translation; 1-, 2-, 3-, 4- and 6-fold rotations; reflection and glide.

Two-dimensional crystals consist of two-dimensional lattices that can be defined by their symmetries.

They have five fold and higher rotation axes prohibited by the crystallographic restriction theorem.

The seven crystal systems and the fourteen Bravais lattices can be used to classify two-dimensional lattices based on their symmetries. All seven crystal systems have been found in two-dimensional lattices.

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The hybridization for the [F]^- ion is sp^3.

In the [F]^- ion, the fluorine atom has gained an extra electron, resulting in a negatively charged ion. To determine the hybridization, we look at the electron configuration around the central atom, which is fluorine in this case.

Fluorine has the electron configuration 1s^2 2s^2 2p^5. Since the [F]^- ion has gained one electron, the new electron configuration becomes 1s^2 2s^2 2p^6.

To determine the hybridization, we count the number of electron groups around the central atom. In the case of the [F]^- ion, there is one electron group, consisting of the lone pair of electrons on fluorine. The lone pair occupies one orbital.

Since there is only one electron group, the hybridization is sp^3, which means that the lone pair is located in an sp^3 hybrid orbital.

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Answer:

True

Explanation:

A proton has a charge of +1, while an electron has a charge of -1. This is why a neutral atom has the same number of protons as electrons.

Neutrons have no charge, hence their name neutron which is similar to neutral.

Answer:

1-Temporarily store food.

2-Contract and relax to mix and break down food.

3-Produce enzymes and other specialized cells to digest food

Answer:

6

Explanation:

the electron configuration for carbon is

1s^2 2s^2 2p^4

in the outermost n=2 energy level , there are 4+2 electrons

Answer:

The adjustable legs and the table of sand.

Note:The question is incomplete. The complete question is given below.

Using Models to Answer Questions About Systems

Armando’s class was looking at images of rivers formed by flowing water. Most of the rivers were wide and shallow, but one river was narrow and deep. Armando’s class thinks that this river is narrow and deep because:

Armando designed the model below to try to answer the question: Why is this river so narrow and deep?

Explanation:

The model designed by Armando will be helpful to answer the question because of the following features it possesses:

1. An adjustable leg- since one of the hypotheses put forward by the class to explain why the river was narrow and deep was that the hill that the water flowed down was very steep, the adjustable legs can be lowered or raised in order to make the slope shallower or steeper so that their hypothesis can be tested.

2. A table of sand- the table of sand serves as the streambed. By adjusting the size of the sand grains to be larger or smaller, the students will be able to to test their second hypothesis that the small size sand grains that the water flowed through was the reason for the river to be narrow and deep.

The results of their experiments will enable them to come to a conclusion.

The gas you are referring to is radon. It is a radioactive gas that occurs naturally in the earth's soil and rocks, particularly in areas with high levels of uranium deposits.

Radon is colorless, odorless, and tasteless, which makes it difficult to detect without special equipment. Radon can enter buildings through cracks in the foundation, walls, and floors, and can accumulate to dangerous levels, especially in poorly ventilated areas. Exposure to high levels of radon gas has been linked to an increased risk of lung cancer, particularly in smokers. It is important to test for radon levels in homes and take steps to reduce levels if they are found to be too high.

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Answer:

C

Explanation:

It is c because that goes into heating and cooling and if nobody is home you should definetly turn off heating and cooling. This should be the correct answer.

Answer:

C

Explanation:

How many moles of aluminum are needed to react completely with 3.2 mol of FeO?

C)1.6 mol

Answer: B!!!

Explanation:

Answer:

A

Explanation:

Have a nice day

To predict the major organic (\(ch_3nh_2\)) product formed when a compound is heated with another compound, we need to know the structure of the starting compound and the reaction conditions.

The reaction product will depend on the reactivity of the atoms in the starting compound and how they interact with the atoms in the other compound. If the starting compound contains functional groups, such as alcohols, carboxylic acids, or nitro groups, these groups can undergo specific reactions with other compounds. For example, an alcohol can react with an acid to form an ester, or a carboxylic acid can react with an amine to form a amide.

The reaction conditions, such as temperature and pressure, can also affect the reaction product. Higher temperatures can increase the rate of the reaction, while higher pressures can lower the activation energy required for the reaction to occur.

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One of the costs associated with a minimum wage is that it creates a shortage of workers.

When a minimum wage is implemented, it establishes a legally mandated floor for the wages that employers must pay to their workers. While the intention behind a minimum wage is to ensure fair compensation and improve the standard of living for low-wage workers, it can have unintended consequences on the labor market.

One of the costs associated with a minimum wage is the creation of a shortage of workers. When the minimum wage is set above the equilibrium wage rate determined by market forces, it increases labor costs for employers. As a result, some employers may be unable or unwilling to pay the higher wage and may reduce their workforce or scale back hiring.

The increased labor costs can make it economically unviable for certain businesses, especially small businesses with limited profit margins, to maintain their current staffing levels. This can lead to a decrease in job opportunities and a shortage of available positions for workers. Additionally, businesses may also choose to substitute labor with capital or technology to reduce their reliance on higher-cost labor.

The shortage of workers arises because the minimum wage creates a price floor for labor, and when the wage exceeds the market equilibrium, it distorts the supply and demand dynamics. This mismatch between the wage rate and the quantity of labor demanded can result in fewer job opportunities and a shortage of workers.

Therefore, one of the costs associated with a minimum wage is the creation of a shortage of workers in the labor market.

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a. The potential for an Fe3+/Fe2+ half cell when using a saturated calomel electrode (SCE) is +0.9944V, and when using a standard hydrogen electrode (SHE) is +0.750V. When using a standard silver/silver chloride electrode (Ag/AgCl) the potential is +0.947V.

Here, correct answer will be

b. A selective electrode is an electrode that is designed to measure the activity of a specific ion in an aqueous solution. Selective electrodes are able to measure the activity of the ion of interest in the presence of other ions that are present in the solution.

c. Ion selective membranes are thin, permeable layers that allow only certain ions to pass through them. They are used in ion-selective electrodes, which are specialized electrical meters that measure the activity of a particular ion in a solution. Ion-selective membranes can be made from organic materials, such as cellulose acetate, or from inorganic materials, such as silica.

d. Alternating current (AC) is an electric current that reverses direction periodically. In contrast, direct current (DC) is an electric current that flows in one direction only.

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F. cyanide, carbon monoxide, and rotenone are all toxic substances that can cause harm to humans and animals. However, they differ in their chemical structure and mode of action.

Cyanide (CN-) is a highly toxic anion that binds to the heme group of cytochrome c oxidase, an essential enzyme in the electron transport chain. This binding disrupts cellular respiration, leading to a lack of oxygen supply to the body's tissues and organs. This can cause severe damage to the central nervous system and even death. Cyanide is commonly used in the production of plastics, paper, and textiles, as well as in the extraction of gold and silver.

Carbon monoxide (CO) is a colorless, odorless gas that is produced by the incomplete combustion of fuels such as gasoline, oil, and coal. It binds strongly to hemoglobin in red blood cells, reducing the amount of oxygen that can be carried to the body's tissues. This can cause headaches, dizziness, nausea, and even death in high concentrations. Carbon monoxide is commonly found in car exhaust fumes, faulty heating systems, and poorly ventilated homes.

Rotenone is a naturally occurring plant extract that is commonly used as a pesticide. It acts as an inhibitor of mitochondrial electron transport, disrupting the production of ATP in the body's cells. This can lead to paralysis and respiratory failure in insects and other pests. Rotenone has also been linked to Parkinson's disease, as prolonged exposure to the substance can damage dopamine-producing neurons in the brain.

In summary, f. cyanide and carbon monoxide disrupt oxygen supply to the body's tissues, while rotenone disrupts ATP production in the body's cells.

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Answer:

Explanation:

I believe

it is b if you are doing the same thing i did

Answer:

Digestive

Explanation:

Answer:

Explanation:

4

Elements that have 1, 2 or 3 electrons that occur in the outer shell would lose electrons. Those that have 5, 6 and 7 would easily gain

In chemistry, an element is a substance that cannot be broken down into simpler substances by chemical reactions. Elements are characterized by their atomic number, which represents the number of protons in the nucleus of an atom of that element. Each element has a unique set of properties, including its atomic structure, physical state, and chemical reactivity. There are currently 118 known elements, each with its own distinct properties and behaviors.

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the principal organic product formed by free-radical bromination of 2,2,4−trimethylpentane is 2-bromo-2,4,4-trimethylpentane.

what is free radical halogenation?

A substitution reaction in which a hydrogen atom is replaced with a halogen atom, via a free radical reaction mechanism. when this reaction is carrid out by bromine radical, it is called free radicle bromination. When bromine (\(Br{2}\)) treated with light (hν) it comes to homolytic cleavage of the Br-Br bond and give rise to bromine radicles.

free-radical bromination of 2,2,4−trimethylpentane

Bromination of an alkane includes the substitution of a bromine atom for a hydrogen atom. The following stages will be taken by 2,2,4-trimethylpentane during this reaction:

Initiation reaction:  The production of a bromine free radical requires the initiation of heat or light.

\(Br - Br\) ⇒ \(2Br\)·

Propagation: This reaction relies heavily on hydrogen. This reaction is impossible if hydrogen is not present. Because tertiary free radicals are more stable than secondary and primary free radicals, they are favoured in this reaction.

Termination: The remaining free radical of bromide reacts with the tertiary free radical of 2,2,4-trimethylpentane to form 2-bromo-2,4,4-trimethylpentane.

the principal organic product formed by free-radical bromination of 2,2,4−trimethylpentane is 2-bromo-2,4,4-trimethylpentane.

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The relative atomic mass of an element R with two isotopes 63R and 65R is 63.64.

Relative atomic mass is the ratio of the average mass per atom of the naturally occurring form of an element to 1/12 of the mass of a carbon-12 atom.

The relative atomic mass (RAM) of an element with two isotopes can be calculated by multiplying the mass of each isotope by its respective percentage abundance as follows:

RAM = (63 × 0.68) + (65 × 0.32)

RAM = 42.84 + 20.8

RAM = 63.64

Therefore, 63.64 is the relative atomic mass of the element R.

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According to the electronic configuration, Li,C, F belong to same period as they have 2 shells .Among F,S, P it is neither same period or group and for O,S,Se they belong to the same group as they have 6 valence electrons.

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

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Answer:

its a

Explanation:ok

for earth quake write, a disturbance in a suburban city has cause a massive earth quake and many problems for the citizens living there, add what you want after that

hope this helps :D

Answer:

wow

Explanation:

dang