Which of the following compounds contains the greatest percent by mass of nitrogen

The statement that is true concerning the given compound is:

c. It should dissolve in water.

Certain chemical entities are associated with chemical compounds. These groups project specific properties onto compounds. These chemical groups are called functional groups. An example of such a functional group is COOH in carboxylic acids.

When a hydroxyl group is attached to a compound, the compound has the property of being soluble in water. The hydroxyl group is composed of hydrogen and oxygen, which makes the compound more soluble in water. Hence option c. The correct answer is that it dissolves in water.

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Complete question is:

A compound contains hydroxyl groups as its predominant functional group. Which of the following statements is true concerning this compound?

a. It won't form hydrogen bonds with water.

b. It is hydrophobic.

c. It should dissolve in water.

d. It lacks an asymmetric carbon, and it is probably a fat or lipid. e. It should dissolve in a nonpolar solvent.

A solution is defined as a mixture of two or more substances, usually, a solute and a solvent, and the difference between these two are in quantity, solute represents the smallest amount and solvent will represent the highest amount, and while you can have more than one solute, you can only have one solvent for a solution. Therefore the statement is true

The p-value would depend on the calculated chi-square statistic and the degrees of freedom associated with the test.

To determine the p-value for the given scenario, we need to perform a statistical test, such as a chi-square test, to assess the association between gender and having a major co-existing condition (MCC).

The observed data can be summarized in a contingency table as follows:

Male 195 105

Female 205 245

To calculate the p-value, we would perform a chi-square test on this contingency table, comparing the observed frequencies to the expected frequencies under the assumption of independence between gender and MCC.

After conducting the chi-square test, the resulting p-value will indicate the probability of observing the given data or data more extreme if there is truly no association between gender and MCC.

However, without the expected frequencies or the results of the chi-square test, it is not possible to determine the exact p-value. Therefore, none of the provided options (A. 49, B. 53, C. 59, D. 50) can be considered as the correct answer. The p-value would depend on the calculated chi-square statistic and the degrees of freedom associated with the test.

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The hydrocarbons in the petroleum that are separated into the fractions is by the fractional distillation method.

The Petroleum will be separated into the fractions through the  process called as the fractional distillation. The  Petroleum is heated in  the distillation tower, and making the hydrocarbons will vaporize. The highest temperature is present at the bottom in the distillation tower, and  the lowest temperature is present at the top of the distillation tower.

Therefore at the different heights in the distillation tower, the different temperatures will be present. The vaporized hydrocarbons will rise through the tower and will condense as  the temperature will be decreases.

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The melting of ice is a spontaneous reaction at room temperature and pressure because it is accompanied by an increase of entropy.

The spontaneity of a reaction is determined by the change in Gibbs free energy (∆G), which is given by the equation:

∆G = ∆H - T∆S

where ∆H is the change in enthalpy, T is the temperature in Kelvin, and ∆S is the change in entropy. A reaction is spontaneous if ∆G is negative.

In the case of ice melting at room temperature and pressure, the process is accompanied by an increase in entropy because the solid phase (ice) has a more ordered arrangement than the liquid phase (water).

This increase in entropy (∆S) contributes a negative term to the ∆G equation, making ∆G negative and the reaction spontaneous.

Therefore, the correct option is (b) Melting is accompanied by an increase of entropy, which explains why the melting of ice is a spontaneous reaction at room temperature and pressure.

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Answer: In atomic theory and quantum mechanics, an atomic orbital is a mathematical function describing the location and wave-like behavior of an electron in an atom. This function can be used to calculate the probability of finding any electron of an atom in any specific region around the atom's nucleus

Explanation:

The concentration of charge carriers are, Concentration of electrons (Nn) = 2.12 * 10¹⁸ / m³ Concentration of holes (Np) = 1.05 * 10²² / m³

Given data: Specific resistance of pure germanium = 0.45ΩmMobility of electrons = 0.39 m²/Vs

Mobility of holes = 0.19 m²/Vs

Formula used:

Resistivity ρ = (1/q) * (1/μp * Np + 1/μn * Nn)

Where, q = charge on electron = 1.6 × 10⁻¹⁹ Cρ = specific resistance * length / Area

Here, we need to calculate the concentration of charge carriers (electrons and holes)

So, putting these values in the formula we get,ρ = (1/q) * (1/μp * Np + 1/μn * Nn)0.45 = (1/1.6 × 10⁻¹⁹) * (1/0.19 * Np + 1/0.39 * Nn)0.45 * 1.6 × 10¹⁹ = 1/0.19 * Np + 1/0.39 * Nn(0.45 * 1.6 × 10¹⁹) / (1/0.19) = Np + (0.45 * 1.6 × 10¹⁹) / (1/0.39) * Nn

The value of Np and Nn can be found by solving the two equations formed above.

Np = 1.05 * 10²² / m³Nn = 2.12 * 10¹⁸ / m³Therefore, the concentration of charge carriers are,

Concentration of electrons (Nn) = 2.12 * 10¹⁸ / m³Concentration of holes (Np) = 1.05 * 10²² / m³

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Drawing several Lewis structures of a molecule connected by double arrow symbols (↔) implies that the molecule exhibits resonance. Resonance occurs when multiple Lewis structures can be written for a molecule, representing different arrangements of electrons. The actual structure of the molecule is a hybrid or combination of these resonance structures, and the double arrow signifies the delocalization or sharing of electrons between different atoms or regions within the molecule.

Resonance is a concept used in chemistry to describe situations where multiple Lewis structures can be drawn for a molecule, but none of the individual structures accurately represent the molecule's true electronic structure. Instead, the actual structure is a hybrid or combination of these resonance structures.

When drawing resonance structures, double arrow symbols (↔) are used to connect the different structures. The double arrow indicates that the molecule can exist in all of the resonance forms simultaneously, with electron delocalization or sharing occurring between different atoms or regions within the molecule.

The presence of resonance is often observed in molecules with conjugated systems, such as benzene or carbonate ions. The resonance stabilization provided by electron delocalization contributes to the stability and unique properties of these molecules.

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Explanation:

Metallic bond, force that holds atoms together in a metallic substance

The fossil fuels that contain sulfur, such as coal and oil is the main cause of acid rain in the world.

The main cause of acid rain in the world is the burning of fossil fuels that contain sulfur, such as coal and oil. When these fuels are burned, they release sulfur dioxide (SO2) and nitrogen oxides (NOx) into the atmosphere, which can react with water, oxygen, and other chemicals to form sulfuric acid (H2SO4) and nitric acid (HNO3). These acids can then fall to the ground as acid rain, causing environmental damage and health problems. Therefore, reducing the use of these fuels or using technologies to reduce their emissions can help to prevent acid rain.

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Answer:

Ionic compounds conduct electricity when molten (liquid) or in aqueous solution (dissolved in water), because their ions are free to move from place to place. Ionic compounds cannot conduct electricity when solid, as their ions are held in fixed positions and cannot move.

Explanation:

Answer: \(Rb_2S\) < \(K_2S\) < \(Li_2S\)

Explanation:

Lattice energy is the energy required to dissociate 1 mole of the an ionic compound into its constituent ions.

Thus higher is the lattice energy more energy will be required to melt the compounds.

As \(Li_2S\)  has highest melting point,  it will require most energy to melt an hence it will have highest lattice energy. The order of three compounds in order of increasing lattice energy

\(Rb_2S\) < \(K_2S\) < \(Li_2S\)

Arsenic poisoning affects the activity of the pyruvate dehydrogenase complex by covalently modifying the lipoamide groups on the enzyme. This inactivates the enzyme and thus inhibits its ability to catalyze the conversion of pyruvate to acetyl-CoA.

In the process of arsenic poisoning, the arsenic compounds can modify the activity of the pyruvate dehydrogenase complex by covalently modifying a lipoamide group. Arsenic binds to sulfur in cysteine residues in many proteins, which affects protein structure and activity.

The arsenic compound reacts with dithiols and covalently modifies a lipoamide group, which directly affects the E2 subunit of the pyruvate dehydrogenase complex. E2 subunit has a lipoamide group, which acts as a cofactor, and is critical for its catalytic activity. This cofactor is also important for the interactions between the E2 subunit and other subunits of the pyruvate dehydrogenase complex. Hence, when this group is modified by arsenic compounds, it can cause irreversible inactivation of the pyruvate dehydrogenase complex. As a result, pyruvate cannot be converted to acetyl CoA, and glucose metabolism is disrupted, leading to symptoms of arsenic poisoning.

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The factors affecting the rate of sugar dissolution in water are temperature and surface area, with higher temperatures and smaller sugar particles leading to faster dissolution. Stirring further enhances the dissolution rate.

Based on the provided experiment, the data table is attached in the image below:

Conclusion:

Sugar dissolves faster in hot water compared to warm and cold water. This indicates that temperature impacts the rate of dissolution, with higher temperatures leading to faster dissolution.

Granular sugar dissolves faster than sugar cubes in the same temperature of water. This suggests that the surface area of the sugar particles influences the rate of dissolution, with smaller granules having a larger surface area and therefore dissolving more quickly.

Stirring the water speeds up the dissolution process for both granular sugar and sugar cubes. Stirring helps in increasing the contact between the sugar and water, facilitating the dissolution process.

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It is therefore an ionic compound, if NaCl is made up Na and Cl ions.

NaCl is an ionic solid. It dissociates into \(Na^{+}\) and \(Cl^{-}\) ions when it dissolves in water. By creating ion-dipole interactions, water molecules solvate these ions. The chemical equation for the dissociation of sodium chloride into \(Na^{+}\) ions and \(Cl^{-}\) ions when salt is dissolved in water is:

NaCl (s) → \(Na^{+} (aq) + Cl^{-} (aq)\)

As a result, adding salt to water causes a chemical change. The products differ from the reactant (sodium chloride, or NaCl), which (sodium cation and chlorine anion). Therefore, a chemical change would occur in any ionic molecule that is soluble in water.

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Answer:

It's called the “The Three Sisters” because it comes from an Iroquois legend. The Legend says corn, beans and squash are inseparable sisters that were given to the people by the “Great Spirit.” It is important to note, however, that the “Three sisters” are also found in many other areas and tribes around North America.

The following chemical reaction occurs when hydrochloric acid and calcium carbonate come into contact: CaCO3 + 2HCl → CaCl + CO2 + H2O, providing acid neutralization as well as byproduct production. Carbon dioxide is the new ionic component as a result.

Whenever the levels of calcium consumed through food alone is insufficient, calcium carbonate is used as a dietary supplement. The body needs calcium for strong bones, muscles, a healthy neurological system, and a healthy heart. In addition to being an antacid, calcium carbonate is used to treat stomach discomfort, heartburn, and acid indigestion.

The chemical compound calcium carbonate, with the formula CaCO3, is created when carbon, oxygen, & calcium come together. It is a common mineral found in rocks all over the world, most notably as limestone, and it is the main component of marine animal shells, snail shells, coal balls, pearls, or eggshells.

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The rays are ranked from strongest to weakest in terms of how deeply they can penetrate an object.

Of all the radiations, gamma rays are the most invasive. As penetration depends on particle size, larger particles have a lower penetration power, hence particles are bigger for, followed by, and then. Rays are also extremely powerful waves with a greater frequency.

The electrons that are released from a radioactive atom's nucleus are known as beta particles. They travel farther in the air, up to several yards, and are lighter than alpha particles.

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Answer:

C The humidity decreases

Explanation:

So, if the temperature drops so the humidity decreases so the moisture dops from what it was before.

Answer:

5.12x10¹¹ millimeters

Explanation:

Milli is a prefix used in science and engineering to decribe the number as the exponent x10⁻³. In the prefix kilo, the number is at the exponent x10³.

5.12x10⁵ kilometers are:

5.12x10⁵ kilometers * (1000m / 1km) = 5.12x10⁸ meters

5.12x10² meters * (1m / 1000millimeters) = 5.12x10¹¹ millimeters

Answer:

mass

Explanation:

mass is how big it is

volume is how much it contains

density is how close its molecules are together

temperature is how hot or cold it is

Balanced chemical equation for the given reaction is Fe₂(CO₃)₃ + 6Cs → 3Cs₂CO₃ + 2Fe.

Balanced chemical equations are those equations in which all entities are present in equal amount on reactant side as well as on product side.

Given balanced chemical reaction is:
Fe₂(CO₃)₃ + 6Cs → 3Cs₂CO₃ + 2Fe

Above given equation is a balanced chemical equation where all atoms of reactant as well as of products are present in same amount.

Hence, required balanced equation is Fe₂(CO₃)₃ + 6Cs → 3Cs₂CO₃ + 2Fe.

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Answer:

it will decrease because there will not be food for all of them and there is very little space for them now so if there is more they will start to fight

Explanation:

there is very little habitat left for panda bears so if there population increases the food and space with be filed

Hello! jamilialves888

I'm glad you asked my name is ✰Tobie✰

And I will help you understand why the population of ⚝pandas ⚝

is decreasing .

-Your answer :βy Tobie

≛So why are pandas going extinct?

One of the main cause is due to the destruction of their own habitat

Since china is a country that is constantly growing their own homes are slowly   being destroyed Since their habitats are becoming destroyed it forces them to live in small unhabitable area .

≛This leads to another problem.....

If they are forced to live in a small area there will be less food...

Since there is a shortage of food that will leave the panda's to slowly starve to death since pandas only eat bamboo they could never be able to live anywhere else....Another reason panda's are going extinct is because they are being hunted for their fur.

ex·tinct

/ikˈstiNG(k)t/

_____________

It means that the species does not exist anymore and

are no longer in existence

Hope this helps!

                                                                                             -Tobie <3

ʕ •ᴥ•ʔ

Answer:

K2O Potassium oxide

Explanation: