how do you write 2-nonene​

Answer:

The energy for a quantum of light is 2.84 x 10-19

try that

Answer:

The answer is D. Substances Y and Z would react to replace substance W, and the position of equilibrium would shift to the left.

Explanation:

PLZ BRAINLIEST'!!!

It is important to use an appropriate instrument in measuring the distance of an object because it gives precise and exact measurements and also, it ensures that the measurement taken is accurate, consistent and reliable. (option A and C)

This is important because it helps people process data accurately. If measurements are not precise or exact, it can lead to errors in data analysis, research findings, and decision-making. Both A and C are correct as an appropriate instrument ensures that the data collected is precise, which leads to more accurate data analysis and decision-making. Hence, using an appropriate instrument is crucial to obtain accurate and reliable data. (options A and C)

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Answer: For disadvantages, 1,2, and 3.

The word equation for the reaction between zinc oxide and sulfuric acid to form zinc sulfate is: Zinc oxide + Sulfuric acid → Zinc sulfate.

In this chemical reaction, zinc oxide (ZnO) reacts with sulfuric acid (H2SO4) to produce zinc sulfate (ZnSO4). The word equation represents the reactants and products involved in the reaction.

Zinc oxide is a compound consisting of zinc (Zn) and oxygen (O), while sulfuric acid is an acid composed of hydrogen (H), sulfur (S), and oxygen (O). When these two substances react, the zinc oxide reacts with the sulfuric acid to form zinc sulfate.

The balanced chemical equation for this reaction is: ZnO + H2SO4 → ZnSO4 + H2O. In this equation, one molecule of zinc oxide reacts with one molecule of sulfuric acid to produce one molecule of zinc sulfate and one molecule of water. The reaction involves the displacement of the hydrogen in sulfuric acid by the zinc in zinc oxide, resulting in the formation of zinc sulfate and water as the products.

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In pure rotational spectroscopy, the selection rules govern the allowed transitions between different rotational energy levels in a molecule.

The selection rules state that for a pure rotational transition to occur, the change in the quantum number of the rotational level, denoted as ΔJ, must be ±1.

This means that a molecule can transition from one rotational level to another adjacent level with a difference of one unit in the quantum number J. This selection rule arises from the conservation of angular momentum during the rotational transition.

The justification for these selection rules is based on the principles of quantum mechanics and the symmetries of the molecular system.

By following these rules, scientists can analyze the rotational transitions in a diatomic molecule, derive the wavenumber expression for rotational transitions, and construct energy level diagrams to understand the rotational states of the molecule.

The distortional term in the rotational term expression accounts for the deviation from the rigid rotor approximation and affects the positions of the energy levels, leading to a more accurate representation of the molecule's rotational behavior.

In the case of CO absorption spectra, the J' (upper state) numbers associated with the transitions can be labeled to indicate the specific rotational levels involved in the observed transitions.

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Answer:

me

Explanation:

me

The correct option is B) the same.

A balanced chemical equation is a representation of a chemical reaction using symbols and formulas of the reactants and products involved. It indicates the number and type of atoms in each molecule.

In a balanced chemical equation, the law of conservation of mass must be satisfied. This law states that matter cannot be created or destroyed, only rearranged.

A balanced chemical equation includes an equal number of atoms for each element in the reactants and the products. You can balance a chemical equation by modifying the coefficients of the reactants and products. Therefore, it follows that the number of each kind of atom on both sides of the balanced chemical equation is the same.

Therefore, the correct answer is option B) the same.

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The 85th percentile of blood pressure readings is approximately 137.64. a. To calculate the z-score for a blood pressure reading of 140, we can use the formula:

z = (x - μ) / σ

where x is the value (140 in this case), μ is the mean (121), and σ is the standard deviation (16).

Substituting the values into the formula:

z = (140 - 121) / 16

z ≈ 1.19 (rounded to two decimal places)

b. To find the proportion of Canadians with high blood pressure, we need to calculate the area under the normal distribution curve for values above 140. This can be done by finding the cumulative probability using the z-score.

Using a standard normal distribution table or a calculator, we can find that the cumulative probability corresponding to a z-score of 1.19 is approximately 0.881.

Therefore, the proportion of Canadians with high blood pressure is approximately 0.881 (rounded to four decimal places).

c. To find the proportion of Canadians with systolic blood pressure in the range from 100 to 140, we need to calculate the area under the normal distribution curve between these two values.

Using the z-scores corresponding to 100 and 140, we can find the cumulative probabilities for each value. The cumulative probability for a z-score of -1.25 (corresponding to 100) is approximately 0.105, and the cumulative probability for a z-score of 1.19 (corresponding to 140) is approximately 0.881 (as calculated in part b).

The proportion with systolic blood pressure between 100 and 140 is the difference between these two probabilities:

Proportion = 0.881 - 0.105 ≈ 0.776 (rounded to four decimal places)

d. The 85th percentile represents the value below which 85% of the blood pressure readings fall. To find the 85th percentile, we need to determine the z-score that corresponds to an area of 0.85 under the normal distribution curve.

Using a standard normal distribution table or a calculator, we can find that the z-score corresponding to an area of 0.85 is approximately 1.04.

To find the actual blood pressure reading at the 85th percentile, we can use the z-score formula:

x = μ + (z * σ)

Substituting the values:

x = 121 + (1.04 * 16)

x ≈ 137.64

Therefore, the 85th percentile of blood pressure readings is approximately 137.64.

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Answer: Scientists are working on nuclear fusion process. Nuclear fusion is the process in which two atomic nuclei combine to form another nuclei. In the process either energy is absorbed or released due to the difference in the mass of reactants and products.

Explanation:

Answer:

C. Solubility

Explanation:

Solubility. A physical property does not change the chemical compostion. Solubility can be observed, unlike the others.

Answer: c. solubility

Explanation: hope this helps

Answer:

Option A

Explanation:

The element X belongs to

=> Period 3 (Because it's valence shell is 3)

=> Group VI (Because electrons in the valence shell , 2+4 = 6)

The element X can be deduced to:

a. belongs to group VI in the periodic table

It is the arrangement of elements in the order of increasing atomic number.

Given Electronic configuration of element X:\(1s^2 2s^2 2p^6 3s^2 3p^4\).This element has an atomic number 16. The element having atomic number 16 is Sulphur. It belongs to: Period 3 (Because it's valence shell is 3)Group VI (Because electrons in the valence shell , 2+4 = 6)Thus, Element X  belongs to group VI.

Therefore, correct option is a.

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s2,p6,d10,f14

S contains 2 orbitals

P contains 6 orbitals

D contains 10 orbitals

F contains 14 orbitals

Answer:

Suppose you must prepare 400 ml of a disinfectant that requires 1:8 dilution from a concentrated stock solution with water. Divide the volume needed by the dilution factor (400 ml / 8 = 50 ml) to determine the unit volume. The dilution is then done as 50 ml concentrated disinfectant + 350 ml

Answer:

heterogeneous mixtures are mixtures that you can see the different compounds in them, homogeneous mixtures are mixtures that have different compounds in them but are not visible. they both have different mixtures or compounds in them.

Explanation:

Answer:O B. Weak acid breaks down minerals by reacting with them.

Explanation:

Chemical weathering is the process whereby rain water which sometimes can be acidic ( As rain falls down it reacts with CO2 in the atmosphere and form acid rain), This  reacts  with the minerals contained in rocks, dissolves and degrades  them further to form entire  new minerals.

An example of a rock that is greatly affected by overexposure of  acid rain is  limestone containing calcite  which easily degrades by acid rain.

Other processes whereby Chemical weathering can occur are through reaction with water and oxygen.

I hope it's helpful!!

Answer:

88.58 inches

Explanation:

You would just divide 225 by 2.54

Answer:

88.5827

Explanation:

If the balloon is closed, then yes, both volume and pressure will increase when the gas inside is heated.

What is pressure?

Pressure is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.

Various units are used to express pressure. Some of these are units of force divided by units of area. For example, the SI unit of pressure, Pascal (Pa), is 1 Newton per square meter (N/m2). Similarly, pounds force per square inch (psi, symbol lbf/in2) is the traditional unit of pressure in imperial and US systems. Pressure can also be expressed as standard atmospheric pressure. Atmospheric pressure (atm) is equal to this pressure and torr is defined as 1/760 of this. Manometric units such as centimeters of water, millimeters of mercury, and inches of mercury are used to express pressure as the height of a particular liquid column within a manometer.

If the balloon is closed, then yes, both volume and pressure will increase when the gas inside is heated.

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Answer:

it's thermal energy

Explanation:

There are five types of kinetic energy: radiant, thermal, sound, electrical and mechanical.

#carry on learning

Hope it helps

In this exercise we have to use the knowledge of kinetic energy and we can also describe it as a thermal energy.

Kinetic energy is a type of energy that is related to the movement of bodies. The result of kinetic energy is intrinsically linked to the value of the object's mass and its speed of movement.

Kinetic energy does not depend exclusively on the speed of a body but also on its mass. Any type of body in motion is endowed with this type of energy: translation, rotation, vibration and others.

With these definitions we can write that it will be the same as saying that kinetic energy can be transformed into thermal energy.

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The false statement among the given options is: "All gases are colorless and odorless at room temperature."

While many gases may indeed be colorless and odorless at room temperature, there are exceptions. Some gases, such as chlorine (Cl₂) and sulfur dioxide (SO₂), have distinct colors and odors. Chlorine gas has a yellow-green color and a distinct odor, while sulfur dioxide gas has a pungent, suffocating odor.

Gases are highly compressible. Non-reacting gas mixtures are homogeneous.Gases expand spontaneously to fill the container they are placed in. Distances between molecules of gas are very large compared to bond distances within molecules.

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The aluminum hydroxide is dissolved, as well as any other acids or bases present that can affect the pH. Without this information, it is not possible to provide a specific pH value for the solution.

To determine the pH of a solution containing aluminum hydroxide (Al(OH)3), we need additional information. Aluminum hydroxide is a weak base, and its pH will depend on its dissociation in water.

First, we can calculate the number of moles of aluminum hydroxide using its molar mass. The molar mass of Al(OH)3 is 78 grams/mol (27 g/mol for aluminum and 3 × 17 g/mol for three hydroxide groups). Therefore, we have 78 g / 78 g/mol = 1 mol of Al(OH)3.

Since aluminum hydroxide is a weak base, it will undergo partial dissociation in water, releasing hydroxide ions (OH-) and aluminum ions (Al3+). The hydroxide ions will increase the pH of the solution.

However, to determine the pH accurately, we need to know the initial volume of water.

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Answer:

A

Explanation:

you multiply both sides by 8 so it stays equal

Answer:

B.

Explanation: hope this helps

Benzene

Answer:

try A

Explanation:

For each chemical reaction listed in the table below, decide whether the highlighted atom is being oxidized or reduced. H₂S 2NAOH is the highlighted atom being reduced in the given chemical reaction is sulfur (S), while the highlighted atom being oxidized is hydrogen (H).

H₂S + 2NaOH → 2H₂O + Na₂S, is the chemical equation provided in the table above. The reaction between hydrogen sulfide and sodium hydroxide is a redox reaction. A redox reaction is a reaction that involves a transfer of electrons between two species. The oxidation state of sulfur (S) changes from -2 to 0; thus, the sulfur (S) atom is reduced in this reaction. Sodium's (Na) oxidation state changes from +1 to 0, indicating that it has been reduced.

The hydrogen's (H) oxidation state has not changed; it remains +1, indicating that it is neither oxidized nor reduced. The hydrogen sulfide's (H₂S) oxidation state changes from -2 to 0, indicating that it has been oxidized. The sodium hydroxide's (NaOH) oxidation state changes from +1 to -1, indicating that it has been oxidized as well. Hence, the highlighted atom being reduced in the given chemical reaction is sulfur (S), while the highlighted atom being oxidized is hydrogen (H).

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Using the law of conservation of mass, the mass of carbon reacted is 54 g of carbon.

According to the law of conservation of mass, matter is neither created nor destroyed. This means that the total mass of reactants is equal to the total mass of products.

Total mass of the products = 336g + 198g = 534 g

Total mass of reactants = 480 g + x g

From the law of conservation of mass;  534 g = 480 g + x g

x g = 534 g - 480 g

x g = 54 g

Hence, 54 g of carbon reacted.

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Option A,  Ninhydrin is a chemical that is used to detect the presence of amino acids in a sample. It reacts with the amino acids in a sample, such as skin, to form a complex that is blue in color.

Ninhydrin is a chemical that is used to detect the presence of amino acids in a sample. It reacts with the amino acids in a sample, such as skin, to form a complex that is blue in color. This is because when Ninhydrin reacts with an amino acid it forms a complex with the nitrogen in the amino group, and this complex is blue in color. It is also commonly used in forensic science to detect fingerprints, as fingerprints contain amino acids from the oils and sweat on the skin. The blue coloration of the skin is an indication of the presence of amino acids, which are found in many biological molecules such as proteins and enzymes.

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