the starting material is an alkene where carbon 1 has a cyclohexyl and methyl substituent, and carbon 2 has a methyl and hydrogen substituent. this reacts with c l 2 in the presence of ethanol.

The volume of the gas sample will be 1.79 L.

A liquid, solid, or gas's volume represents the amount of three-dimensional space it occupies. Although there are many additional units that can be used to indicate volume, the most used ones are liters, cubic meters, gallons, milliliters, teaspoons, as well as ounces.

Given data :

Mass of \(O_{2}\) = 1.20 g

Mass of \(N_{2}\) = 1.43 g

Number of moles can be calculated by suing the formula:

Number of moles of \(O_{2}\) = Mass / molar mass = 1.20 / 32 = 0.03 mol

Number of moles of \(N_{2}\) =  Mass / molar mass  = 1.43 / 28 = 0.05 mol

So, the total count of moles can be calculated by :

Total moles = moles of \(O_{2}\)  +  moles of \(N_{2}\)

Total moles = 0.03  + 0.05 = 0.08 mol

The volume of the gas at STP can be calculated as:

Volume = 0.08 mol × 22.4 mol/L

Volume = 1.79 L

Therefore, the volume of the gas sample will be 1.79 L.

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Answer:

No. Light is not a physical thing, so it cannot change physical things like glue.

Explanation:

Light is not effective at all to glue, it doesn't do anything at all.

Answer:

A

Explanation:

The bubbles formed from the plants are always oxygen. The photosynthetic reaction taking place in the plants release oxygen molecules.

Photosynthesis is the biochemical process of synthesizing chemical energy by green plants with the aid of light energy. They store this chemical energy in the form of glucose.

In photosynthetic reaction, water and carbon dioxide are combined to produce glucose and oxygen gas. The bubbles formed in the reaction is oxygen gas.

This process is an event in the carbon cycle to balance the amount of carbon dioxide in the atmosphere and in living matter. Photosynthesis provide the sufficient oxygen for respiration for animals. Hence, option A is correct.

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Answer:

It has 53

Explanation:

hope this helps

Answer: 72

Explanation:

There are 72 neutrons that iodine have.

The value of the coefficient of determination is 0.49.

The coefficient of determination, also known as R-squared (R²), measures the proportion of the total variation in the dependent variable (energy content) that can be explained by the independent variable (protein content). It provides a measure of how well the regression model fits the data.

The coefficient of determination is calculated by squaring the correlation coefficient (r), which represents the strength and direction of the linear relationship between the two variables.

In this case, the given information provides the correlation coefficient (r = 0.7), which indicates a moderate positive correlation between protein content and energy content.

To find the coefficient of determination, we square the correlation coefficient:

R² = r² = (0.7)² = 0.49

Therefore, the value of the coefficient of determination is 0.49.

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Answer:Substances combine and form a new product because of chemical reactions. During a chemical reaction, the atoms of the reactants rearrange themselves to form new molecules with different properties. For example, when hydrogen gas (H2) reacts with chlorine gas (Cl2), they combine to form hydrogen chloride gas (HCl), which is a new product. The chemical reaction that occurs is:

H2 + Cl2 → 2HCl

In this reaction, the hydrogen and chlorine molecules break apart and then recombine to form hydrogen chloride. The properties of hydrogen chloride, such as its boiling point, melting point, and reactivity, are different from those of hydrogen and chlorine. This is because hydrogen chloride has a different chemical structure and different chemical properties than hydrogen and chlorine.

Chemical reactions occur because of the way atoms interact with each other. Atoms are always trying to achieve a more stable arrangement of electrons in their outermost energy level. When atoms combine to form new molecules, they can achieve a more stable electron configuration, which is energetically favorable. This is why chemical reactions occur and why substances combine to form new products.

The higher level that the electron reached from ground state is; n = 5.

The fixed distances from an atom's nucleus where electrons may be found are referred to as energy levels (also known as electron shells).

Higher energy electrons have greater energy as you move out from the nucleus.

A region of space within an energy level known as an orbital is where an electron is most likely to be found.

Given: Wavelength of the photon absorbed by ground state H atoms; λ_g = 94.91 nm = 94.91 × 10⁻⁹ m

The formula to get the higher level is Rydberg's formula;

1/λ = R(1/n₁² - 1/n₂²)

where;

R is rydberg constant = 1.097 × 10⁷ m⁻¹

Thus;

\(\frac{1}{34.91*10^{-9}} =1.097*10^{-7}(\frac{1}{1^{2}}-\frac{1}{n_{2}^{2}})\\ 0.9605=1- \frac{1}{n_{2}^{2}}\\\frac{1}{n_{2}^{2}}=1-0.9605\\\frac{1}{n_{2}^{2}}=0.0395\)

n₂ = √(1/0.0395)

n₂ ≈ 5

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I hope it will help you.

Have a great day ahead.

Thank you

Answer:

the energy produced as part of the reaction and balancing the equation accounts for the energy produced

Answer:

lpg and oxygen are two gases which are supplied in compressed form in homes and hospitals

Explanation:

Answer:

MAIN IDEA
What the authors meant is not to judge people by their looks.

_____________________________________________________________

THE UGLY DUCKLING

The ugly duckling doesn't fit with the other ducklings and grows up, to be a fabulous bird. In the beginning, he is teased because of his looks, in a quote, "As the ugly duckling grew, many animals in the pond criticized him. His feathers were too dark, his neck was too long, and his body was too big. His fellow ducklings refused to recognize that underneath the feathers, the ugly duckling was kind, good, and gentle. The ugly duckling shed many tears because none of the other animals would play with him."

Near the end, however, it states, "He believed that the swans would never be his friends and looked down into the pond in despair. Then, his eyes opened wide, for he saw his reflection. To his great astonishment, the ugly duckling discovered that he was a beautiful, royal swan! The swans welcomed their new friend, whose lovely appearance was matched only by his kind heart. He now felt like he belonged." Throughout the course of the story, the other birds' views change since now they realize how awful they felt for mistreating the ugly duckling.

_____________________________________________________________

THE PRINCESS AND THE PEA

The king and queen didn't believe that she was a princess, so they had her endure the trial of sleeping on twenty mattresses with a pea under the very bottom one. Near the beginning of the story, it states, "The disheveled maiden looked at the king in disbelief. "I am a princess, come to see the prince," she explained, all the while shivering. The king summoned his wife, the queen, for advice. The queen looked at the hideous creature in disbelief, thinking that no princess would ever allow herself to be found in such a state. She thought quickly and came up with a clever plan. The queen put a small pea at the bottom of a bed and piled twenty mattresses on top of it. When the girl arrived at the room, she had to climb a ladder to reach the top of the bed, where she collapsed in exhaustion." This is when the king and queen were in doubt that she was a princess.

However later on it stated, "Bright and early the next morning, the king and queen arrived at the girl's bed-chamber. The queen asked the girl how she had slept the night before. "Absolutely terribly!" bemoaned the maiden. "I have spent the entire night tossing and turning. I don't know whether there is something hard in the bed, or your mattresses are rocks, but my body is black and blue." The queen and the king stared at the maiden in astonishment. Only a real princess would have such delicate skin that she could feel a pea under twenty mattresses. The queen and king brought her to the prince, who was thrilled to meet a real princess with such an independent spirit." As you can see the king and queen believed that she was a princess now because they stated, "Only a real princess would have such delicate skin that she could feel a pea under twenty mattresses."

_____________________________________________________________

CONCLUSION
Both stories focus on how the main character is doubted or mistreated because of how they look, but throughout the stories, the main character proves them wrong.

Explanation:

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Experimental social psychologists face a major ethical dilemma concerning the potential harm or discomfort caused to participants during research studies.

Research in experimental social psychology often involves manipulating variables or creating scenarios that can evoke negative emotions, induce stress, or compromise privacy.

This raises concerns about the well-being and rights of participants. While researchers strive to gather valuable insights into human behavior, they must carefully balance the benefits of knowledge with the potential risks and ethical implications of their studies.

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Answer: this might have something to do with the pancreas

Explanation:

the pancreas produces insulin if subject a produces more insulin than subject b the reaction to the glucose will be different the pancreas breaks down the glucose into sugar and protiens hope this helps

Answer:

basalt

Explanation:

it’s rough on skin

Answer: look down hope I helped

Explanation:

1) First convert to pOH as OH is the dissociating species in a base equilibrium.pH + pOH = 14 (at 25 C)pH=13, hence pOH = 1,Hence [OH] = 10^-1 Mdiluting by factor of 10 with pure water gives [OH] = 10^-2 MThe new pOH = 2, hence the new pH is 12In general, dilution (with pure water) by a factor of 10 moves the pH 1 unit in the direction of the pH of water (pH 7). i.e. it moves up for acids, down for bases.(At infinite dilution of either acids or bases, you’d have pure water - obvious when you think of it like that)

Answer:

Molecules always move from areas of high concentration to low concentration.

Explanation:

The correct answer to how diffusion works would be that molecules always move from areas of high concentration to low concentration.

Diffusion is generally defined as the movement of molecules - solid, liquid, or gases - from the region of higher concentration of the molecule to the region of lower concentration of the same molecule. The net movement of molecules continues until an equilibrium is established between the two sides.

False. Electrostatic catalysis and covalent bonding interactions are two different types of chemical interactions that occur between atoms and molecules.

Electrostatic catalysis refers to a process in which a catalyst accelerates a chemical reaction by altering the charge distribution around the reactants, without participating in the reaction itself. This process relies on the electrostatic interactions between the catalyst and the reactants, which can help to stabilize the transition state of the reaction and lower the activation energy required for the reaction to proceed.

In contrast, covalent bonding interactions occur when atoms share electrons to form a chemical bond. These interactions are much stronger than electrostatic interactions and involve the sharing of electrons between atoms.

While both types of interactions can play important roles in chemical reactions, electrostatic catalysis does not typically involve covalent bonding interactions. Instead, it relies on the weaker electrostatic interactions between the catalyst and the reactants. These interactions can be enhanced by the geometric and electronic properties of the catalyst, as well as the nature of the reactants and the reaction conditions.

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Red

Litmus paper turn red when it comes in contact with acid. It turn blue if it come in contact with a base. Neutral litmus paper is purple

False. The H-N-H bond angles in ammonia (NH₃) are actually smaller than the H-O-H bond angles in water.

In ammonia, the H-N-H bond angle is approximately 107.5°, while the H-O-H bond angle in water is approximately 104.5°. This difference is mainly due to the presence of two lone pairs of electrons on the oxygen atom in water, which repel the O-H bonds, leading to a smaller bond angle compared to ammonia, which has only one lone pair of electrons on the nitrogen atom.

The nitrogen atom possesses a partial charge that is opposite to that of each hydrogen atom, which is partially positive.

The electrons inside ammonia molecules are distributed with uneven charges. The nitrogen atom has a partial negative charge because it is more electronegative than the hydrogen atom and draws electrons to it. In addition to having a partial positive charge, hydrogen is less electronegative than nitrogen. As a result, the nitrogen atom has a partial negative charge, whereas the hydrogen atom has a partly positive charge.

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The complete question is

Find the statement True or false: The H-N-H bond angles between the nitrogen and the hydrogens in ammonia (NH₃) are larger than the H-O-H bond angle in water because the three N to H bonds need more room to spread out as opposed to just the two o to H bonds.

Answer: Hello sir, hope you are having a good day, I have came to tell you your answer needs a picture so we can answer it or otherwise we will be wrong

Explanation:

A large group of chemical elements that contains many metals which are not highly reactive such as copper, iron, and tungsten is called: Transition metals.

​

Transition metals can be defined as a chemical element that has a partially filled d-orbital or is capable of producing cations with an incomplete d-orbital (subshell).

Hence, a transition metal refers to a large group of chemical elements that are found in the d-block of the periodic table such as Group III to Group XII elements.

In Chemistry, some examples of transition metals include the following:

In conclusion, transition metals comprises of many metals which are not highly reactive such as tungsten, iron and copper.

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Moss is a nonvascular plant, lacking a transport system and reproducing with spores.The correct option is C

Mosses are small, nonvascular plants that do not have true roots, stems, or leaves. Instead, they have thin thread-like structures called rhizoids that anchor the plant to the substrate and absorb water and nutrients from the surrounding environment.

Mosses reproduce using spores, which are small, single-celled structures that are dispersed by wind or water. Mosses do not produce flowers, seeds, or fruits like angiosperms or gymnosperms do. Instead they produce capsules that contain spores which are released into the environment when the capsule opens.

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Gravity, as a fundamental force of nature, is influenced by several factors. The following are some of the key factors affecting gravity:

Alright, let's take it step by step!

(a) When you mix water with different temperatures, the final temperature is like a weighted average. Imagine you have `v` liters of water at temperature `T` and `u` liters of water at temperature `S`. The amount of thermal energy in the first batch is `v*T` and in the second batch it's `u*S`. When you combine them, the total thermal energy is `v*T + u*S`. Since the total volume is now `v + u`, the average energy per liter (which is the final temperature) is `(v*T + u*S) / (v + u)`.

In equation form:

Final Temperature, F = (v*T + u*S) / (v + u).

(b) Now let's move to the changing volumes and temperatures. Let `v(t)` be the volume at time `t`, and `T(t)` the temperature at time `t`. Let's say that in `Gt` seconds, `Gu` gallons of water are added at temperature `S`. We’ll assume that 1 gallon is the same as 1 liter for simplicity, though in reality they are slightly different.

The new volume after `Gt` seconds is `v(t) + Gu`, and the total thermal energy is `v(t)*T(t) + Gu*S`. The new average temperature is:

T(t+Gt) = (v(t)*T(t) + Gu*S) / (v(t) + Gu).

Now, T(t+Gt) - T(t) = [(v(t)*T(t) + Gu*S) / (v(t) + Gu)] - T(t).

Now, let's think about water pouring at a constant rate. Let's use the limit definition of the derivative. Instead of `Gu` gallons in `Gt` seconds, let's say a tiny amount of water `du` is added in a tiny amount of time `dt`. So, `du/dt` is the rate at which water is poured into the urn.

Using the limit definition:

dT/dt = lim (dt -> 0) [(v(t)*T(t) + du*S) / (v(t) + du) - T(t)] / dt

     = [(v(t)*T(t) + du*S) / (v(t) + du) - T(t)]' (derivative with respect to t)

     = [v'(t)*T(t) + v(t)*T'(t) + du/dt*S - v'(t)*T(t) - v(t)*T'(t)] / (v(t) + du) (using product rule)

     = (du/dt*S) / (v(t) + du).

As dt approaches 0, du becomes very small, and thus we can ignore it in comparison to v(t), so:

dT/dt ≈ (du/dt*S) / v(t).

This is the rate of change of temperature with respect to time, in terms of the rate at which water is poured, the temperature at which it is poured, and the volume of water already in the urn.

Based on the products formed when they react with water, the following is true:

AlCl₃ - Acidic.

NaBr - Neutral.

NaClO - Acidic.

3CH₃NH₃NO₃ - Acidic.

Na₂SO₃ - Basic.

A chemical compound is a substance made of numerous identical molecules joined by chemical bonds and containing atoms from various chemical elements. Therefore, a molecule composed entirely of one element's atoms is not a compound.

Here,

given set of solution:

(a) AlCl3

(b) NaBr

(c) NaClO

(d) 3CH3NH34NO3

(e) Na2SO3

AlCl3 produces hydrochloric acid, a potent acid, when it reacts with water. The mixture is going to be acidic.

When NaBr reacts with water, it creates Sodium Hydroxide, a powerful base, and Hydrobromic acid, a powerful acid. They will balance each other out because they are both powerful, leaving a neutral result.

Sodium Hydroxide, a weak acid and a strong base, are the products of NaClO. The solution will be simple.

Nitric Acid, a strong acid, and a weak base will be produced by 3CH3NH3NO3, making the solution acidic.

Na2SO3 would generate Sodium Hydroxide, a strong base, and a weak acid, making the solution basic.

The following is true based on the products formed when they react with water:

Acidic AlCl3.

NaBr is a neutral compound.

NaClO is an acidic compound.

3CH3NH3NO3 is an acidic compound.

Na2SO3 is a basic.

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To Find :

The STP moles of 67.2 L CO.

Solution :

We know, molar volume at STP is used to converted into moles by :

1 moles = 22.4 L STP

So, number of moles in 67.2 L CO is :

\(n=\dfrac{67.2}{22.4}\\\\n = 3 \ moles\)

Therefore, number of STP moles are 3.

Hence, this is the required solution.