explain why is important to follow a process for understanding the problem, and who should be involved in final solution prioritization

A π orbital has zero nodes contributed to bonding and it has non zero electron density localized on both sides of plane.

A completely antibonding molecular orbital has at least one node perpendicular to the internuclear axis while a completely bonding molecular orbital has no nodes (regions of zero electron probability) perpendicular to the internuclear axis. The internuclear axis is the center of symmetry for a sigma orbital (bonding) or a sigma star (*) orbital (antibonding). All cross-sections that are perpendicular to that axis are therefore circular.

A nodal plane that houses the nuclei is present in both a pi orbital (bonding) and a pi star (*) orbital (antibonding), and electron density is localized on both sides of the plane.

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Answer:

for pH 13 it = strong based the ph 2 is= weak acid

Explanation:

To determine the amount of soil (or particulate matter) in the air, scientists typically use air sampling and gravimetric analysis. Here's a general outline of the process:

1. Air Sampling: Air is collected at a specific location using air sampling equipment. Various methods can be employed, such as high-volume samplers or personal samplers, depending on the purpose and requirements of the study.

2. Filter Collection: The air sample is passed through a filter, which collects the particulate matter present in the air. Filters with a specific pore size, typically in the range of 0.2 to 10 micrometers, are commonly used to target certain particle sizes.

3. Weighing: The collected filters are carefully handled and brought to a controlled environment, such as a laboratory. The filters are pre-weighed to establish their initial mass and then exposed to the air sample to collect the particulate matter.

4. Conditioning: After exposure, the filters are allowed to dry in a controlled environment to remove any moisture that might have been absorbed from the air.

5. Post-Weighing: Once the filters are completely dry, they are weighed again to determine the final mass. The difference in mass (before and after exposure) represents the mass of the particulate matter collected on the filter.

6. Calculation: The mass of the particulate matter collected on the filter is usually expressed in micrograms or milligrams per cubic meter of air (µg/m³ or mg/m³). This value is calculated by dividing the mass of the collected particles by the volume of air sampled.

It's important to note that this process provides an estimation of the amount of particulate matter in the air at a specific location and time. The composition and characteristics of the particulate matter can vary, so further analysis may be required to identify specific types of soil or other particulate matter present in the air sample.

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The calculation of TSP provides an important tool for understanding air quality and identifying potential environmental and health risks associated with air pollution.

In chemistry, the amount of soil in the air is typically calculated using a measurement called total suspended particulate matter (TSP).TSP refers to the total amount of solid particles that are suspended in the air and can be measured using a variety of methods. Some of the most common methods include the use of high-volume samplers and gravimetric analysis.TSP measurements can provide valuable information about the quality of air in a given area, as high levels of particulate matter can be harmful to human health and the environment. The specific calculation used to determine the amount of soil in the air can vary depending on the measurement method and the specific characteristics of the sample being analyzed. However, in general, the calculation involves measuring the weight of the sample and comparing it to the volume of air that was sampled. This ratio can then be used to determine the concentration of TSP in the air sample. Other factors that may be taken into account when calculating the amount of soil in the air include the size distribution of the particulate matter, as well as the specific types of particles that are present.

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He+, F⁻¹, Al⁺², P⁻³, and Mg⁺² ions are likely to be formed, while the N⁺⁵ ion is not likely to be formed.

Ions are formed when an atom loses or gains electrons, resulting in a net electrical charge.

N⁺⁵ cannot be formed as nitrogen already has five valence electrons and it is difficult to gain or lose electrons to form an ion.

He+ can be formed by the loss of electrons from its only occupied orbital.

F⁻¹ can be formed by gaining one electron to achieve a full valence shell.

Al⁺² can be formed by losing two electrons from its three valence electrons, as it is energetically favorable to lose electrons.

P⁻³ can be formed by gaining three electrons to fill its valence shell, and Mg⁺² can be formed by losing two electrons from its two valence electrons.

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Answer:C

Explanation:

Answer:

3

Explanation:

the answer is 3 because it is 3 for the o2 so 3 you have to pay more attention for the small ditails

The transformation that occurs when solid barium bromide dissolves in water: BaBr₂ → Ba²⁺ (aq) + 2Br⁻ (aq)

Barium bromide compounds are formed from metals and non-metallic elements. Therefore it is an ionic compound. Barium bromide is stored in glass bottles to prevent liquefaction. This is because barium bromide is a salt and can easily absorb air hydration and convert it into a hydrated form.

The reaction of barium ions with bromide ions creates a highly toxic ionic compound called barium bromide. Like other ionic compounds, barium bromide exists in a crystalline form.

Barium bromide ionizes into barium ions and bromide ions in contact with water.

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Answer:

concentration = mol/volume = 4/2 = 2M

The name of the interaction that would form between a polar and nonpolar molecule is called van der Waals interaction.

Van der Waals interaction takes place between polar and nonpolar molecules. Van der Waals forces are weak, and they occur between atoms, ions, and molecules. These forces are very weak in gases but increase in liquids and solids. They are responsible for the interaction between molecules, the attraction between molecules, and the adhesion of molecules to the surface. This force is responsible for the interaction between biological molecules.

Van der Waals forces are significant in determining the boiling point, melting point, and solubility of molecules. They also contribute to the behavior of molecules in a solution.

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Peel the glove away from your body, pulling it inside out. Peel the glove away from your body, Grasp the outside of one glove at the wrist. Do not touch your bare skin.

A chemical is any substance that has a defined composition.

Steps to remove gloves:

Grasp the palm of one glove near your wrist. Carefully pull the glove off, turning it inside out.

Hold the glove in the palm of the still-gloved hand. ...

Pull the glove until it comes off inside out. ...

Always wash your hands after removing gloves and before touching any objects or surfaces.

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Answer:  The molarity of the initial concentrated solution is 0.450 M

Explanation:

According to the dilution law,

\(M_1V_1=M_2V_2\)

where,

\(M_1\) = Molarity of concentrated KOH solution = ?

\(V_1\) = volume of  concentrated KOH solution = 175 ml

\(C_2\) = concentration of diluted KOH solution= 0.315 M

\(V_2\) = volume of diluted KOH solution= 250 ml

Putting in the values, we get:

\(M_1\times 175=0.315\times 250\)

\(M_1=0.450M\)

Thus the molarity of the initial concentrated solution is 0.450 M

Answer:

peer reviewing

Explanation:

Its peer reviewing because there peers and there reviewing eachothers work

The process whereby scientists check each other’s work is peer reviewing.

Peer group are the groups of people of same age, same background with same interest.

In the peer reviewing process group of members will check, evaluate and correct each others work, which in turn help the members of the group to update their work.

Hence, option (c) is correct i.e. peer reviewing is the process whereby scientists check each other’s work.

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Answer:

2

Explanation:

\(mole = \frac{mass}{relative \: molecular \: mass} \)

Mass of Na2SO4 = 284.078g

Relative Molecular Mass = 142g/mol

\(therefore \\ mole = \frac{284.078}{142} \)

mole = 2.000549

mole ≈ 2

Answer:

Explanation:

A

An ionic bond is formed when there are more or less electrons that normal in bonding atoms.

An ionic bond is formed when one atoms donates electrons to another specie to form an ion pair. One atom is positively charged while the other specie is negatively charged.

Hence, an ionic bond is formed when there are more or less electrons that normal in bonding atoms.

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Based on the average properties found in the appendix, the modulus of elasticity of steel (Esteel) is generally greater than that of plastics (Eplastics).

According to the average properties found in the appendix, the modulus of elasticity (E) of steel is generally greater than that of plastics.

The modulus of elasticity, also known as Young's modulus, measures the stiffness or rigidity of a material. It quantifies how much a material deforms under an applied load.

Steel is known for its high strength and stiffness, and it typically has a higher modulus of elasticity compared to plastics.

On the other hand, plastics have a wide range of modulus of elasticity values depending on their composition and structure.

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The most likely effect of the abundant groundwater and rich soil in the Great Plains area on the people is many people in the area participate in large-scale farming and agriculture.

With its rich soil and plentiful groundwater resources, the Great Plains region is ideally suited for agriculture. It is the perfect place for large scale farming and agriculture as the soil is rich in nutrients and promotes the growth of crops. As a result, a large number of people live in the Great Plains and work in agriculture, such as growing crops and raising cattle. Agriculture plays an important role in the region's economy and way of life, creating jobs and increasing the general prosperity of the towns and cities of the Great Plains.

So, the correct option is C.

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Answer:

i should be A i hope this helps

Explanation:

Answer:

There are millions of organic compounds but only thousands of inorganic compounds because:

a. organic compounds were formed by living things.

b. there is more carbon on Earth's surface than any other element.

c. atoms of elements other than carbon never combine with themselves.

d. carbon atoms can combine with up to four other atoms, including other carbon atoms.

a. The molality of solution (a) is 0.231 mol/kg.

b. The molality of solution (b) is 0.388 mol/kg.

c. The molality of solution (c) is 0.244 mol/kg.

Molality (m) is defined as the number of moles of solute per kilogram of solvent. We can use the formula below to calculate the molality:

m = moles of solute / mass of solvent (in kg)

a) For solution (a):

moles of solute = 0.455 mol

mass of solvent = 1.97 kg

m = 0.455 mol / 1.97 kg

m = 0.231 mol/kg

b) For solution (b):

moles of solute = 0.559 mol

mass of solvent = 1.44 kg

m = 0.559 mol / 1.44 kg

m = 0.388 mol/kg

c) For solution (c):

moles of solute = 0.119 mol

mass of solvent = 488 g = 0.488 kg

m = 0.119 mol / 0.488 kg

m = 0.244 mol/kg

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Answers

Explanations

Answer:

sulfate and water compound, ...

Explanation:

sulfate and water compound, ...

Answer:

Determine the volume of the sample of CO2(g) if the temperature and pressure are changed to 336K and 152.0 kPa. Answer-->151 mL (PV/T=PV/T ) 60.

The combined gas law gives the value of the volume. The final volume at 336 K is 151.3 mL.

Charle's, Boyle's, and Gay-Lussac's laws together give the combined gas law. It is given as:

PV / T = k

Given,

Initial volume = 200 mL

Initial pressure = 101.3 kPa

Initial temperature = 296 K

Final pressure = 152 kPa

Final temperature = 336 K

The final volume is calculated as:

(P₁V₁) ÷ T₁ = (P₂V₂) ÷T₂

(101.3 × 200) ÷ 296 = (336 × V) ÷ 152

V = 151.3 mL

Therefore, 151.3 mL is the final volume at 300 K.

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Answer:

14. the metal is tin which it density is equal 7.3g/cm^3

Answer: It’s the 3rd one

The elements of period 5 is best described as the Highly reactive metals, Relatively nonreactive metals, Metalloids, Reactive nonmetals, Nonreactive gases.

The elements of period 5 include metals and nonmetals,

For example-

Therefore, the elements of period 5 is best described as the Highly reactive metals, Relatively nonreactive metals, Metalloids, Reactive nonmetals, Nonreactive gases.

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A solid that forms and settles out of a liquid mixture is called a precipitate.

The process of changing a dissolved component into an insoluble solid from a super-saturated solution is referred to as precipitation. This process takes place in an aqueous solution. The name given to the solid that forms is precipitate. In the event that an inorganic chemical reaction results in precipitation, the chemical reagent that is responsible for the formation of the solid is referred to as the precipitant. To precipitate in chemistry means to generate an insoluble compound, which can occur either through the reaction of two salts or through a change in temperature that affects the solubility of the compound.

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1. The activation energy for the reaction is 30 KJ

2. The change in energy for the reaction is -20 KJ

3. The reaction is exothermic

4. The letter that represents the products is B

5. The letter that represents the reactants is A

We know that activation energy is the minimum energy required for a reaction to occur.

Thus, the activation energy for the reaction can be obtain as shown below:

Activation energy = Peak energy - Energy of reactant

Activation energy = 70 - 40

Activation energy = 30 KJ

The change in energy is simply the difference in the energy of the product and reactant. This can be obtained as follow:

Change in energy = Energy of product - energy of reactant

Change in energy = 20 - 40

Change in energy = -20 KJ

From the diagram, the energy of the product is lesser than the energy of the reactant. Hence, the change in energy is negative (i.e -20 KJ).

Thus, we can conclude that the reaction is exothermic reaction.

The letter which represents products in the diagram is letter B

The letter which represents reactants in the diagram is letter A

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NICE its did not work at all

Answer:

Explanation:

Firstly, it should be noted that melting and freezing points are the same. Thus, when a substance melts at a certain temperature, it means it can also start freezing/solidifying at that same temperature. That been said, when the substance P is a solid at a certain temperature, the other compound Q will boil at that same temperature and hence will be a gas at that same temperature.

If P is solid, it simply means that Q must still be in the liquid state.

From the question, we can see that, the melting point of P and the boiling point of Q are the same. The melting point of a substance is the temperature at which the solid turns to liquid while the boiling point of a substance is the temperature at which a liquid turns to a gas.

If P is solid, it simply means that Q must still be in the liquid state. It has not yet started boiling since the melting point of P and the boiling point of Q are the same.

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