Polartiy in a sentance

The final volume of the gas is 123.9ml.

Given here, the pressure of the gas (P)= 783 torr = 1.03 atm (1atm = 760torr) and work done = 124joules.

The initial volume given here V₁= 64.9ml Or 64.9× 10⁻³l ( 1ml =10⁻³l) .

Now we calculate the final volume by work done formula,

Work done = P(V₂-V₁)

124 = 1.03( V₂- 64.9× 10⁻³)

On calculating this we get,

V₂= 123.9ml or 123× 10⁻³.

So, the final volume calculated and found to be 123.9ml or 123× 10⁻³.

Work done for a gas is defined as the pressure change multiplied by a volume change in the gas.

Thermodynamics is branch which examines a system’s energy and work. This branch of science, thermodynamics examines how heat, work, temperature, and energy are related. The thermodynamics refers to the transfer of energy from one location or form to another. The fundamental idea is that heat is a type of energy that is equivalent to a specific quantity of mechanical labour.

There are three most important laws of thermodynamics, they are zeroth law, first law, second law and third law of thermodynamics which have specific definitions.

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Answer:

a. inertia

Explanation:

Inertia means an object will continue its current motion until some force causes its speed or direction to change. The term inertia is properly understood as shorthand for "the principle of inertia" as described by Newton in his first law of motion.

Any reaction that has a catalyst added to it has its activation energy reduced, accelerating the rate of the reaction. Although it doesn't initiate the reaction, it lowers the energy needed to do so. Furthermore, doing so causes the catalyzed reactions to produce an intermediate product.

The catalyst's properties are the key idea used to address this question. The molecules known as catalysts have a strong tendency to alter the rate of a reaction. It should be noted that the catalyst itself does not change significantly.

A catalyst accelerates both the forward and backward reactions at a faster rate. It also lowers the activation energy for both forward and backward reaction.

Without a catalyst, the reaction would speed up in any direction. However, a catalyst can never increase the rate of a reaction in both directions at the same time—neither forward nor backward. A catalyst lowers the activation energies of both forward and backward reactions, causing them to accelerate in the desired direction.

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The second option Al, Si, I, Au contain halogen that is Iodine (I).

Thus, second option contain halogen.

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When water dissolves a substance, weak charges on water molecules attract oppositely charged portion of the substance, pulling them out into the solution. The property of water that accounts for this occurrence is polarity.

We all know that water is a polar substance, but what does that mean? Whenever hydrogen atoms combine with other highly electronegative elements like fluorine, chlorine or oxygen. a partial positive charge forms on the hydrogen, while a partial negative charge forms on the electronegative element, making it a dipole. This is what makes water a polar substance.

When a substance, for example, table salt is added to a glass of water, the positive dipole (partial positive charge) in the hydrogen atoms attract the negatively charged chlorine ions in the salt, while the negative dipole in the oxygen atom attracts the positive sodium ions in the salt, pulling them into the solution. That is why, the salt crystals disappear a while after they were added into the glass of water.

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The mass number of atoms is calculated by adding the number of neutrons and protons.

The smallest piece of stuff that makes up an element is an atom. It consists of a nucleus with protons and neutrons and orbitals with a specific number of electrons surrounding it. One can identify and distinguish an element's atom from the others by knowing the nuclear makeup of a certain atom. In actuality, the periodic table was created expressly to organize the elements in terms of their atomic and mass numbers and nuclear compositions.

According to the periodic chart, an atom's nuclear composition is closely related to its atomic and mass number. The number of protons in the nucleus or the number of electrons around an atom determines its atomic number for neutral atoms. The amount of components inside the nucleus affects the mass number, meanwhile. The total number of protons and neutrons in the nucleus is used to calculate it. As an illustration, the mass number of the element helium is 4, as its atom has two protons and two neutrons in its nucleus.

Therefore, the correct option is (d).

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The empirical formula of the compound is CHO.

The empirical formula is the formula that shows the ratio of each of the atoms in the compound. Let us now look at the relative percentages of each of the elements and divide them by the relative atomic masses of each of the elements.

C - 40/12,  H - 4.57/1,  O -  54.4/16

C - 3.33,  H- 4.57, O - 3.40

Dividing through by the lowest ratio;

C - 3.33/3.33,  H- 4.57/3.33, O - 3.40//3.33

C - 1, H - 1, O - 1

The empirical formula of the compound is CHO.

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Because of their many chiral centers and OH functional groups, carbohydrates can be extremely challenging to synthesize. In the production of carbohydrates, epoxides can be helpful synthetic intermediates. Take the outcome of the reaction between this epoxide and a phenyl Gilman reagent. To identify stereochemistry when it occurs, use the wedge/hash bond tools. Clearly identify the wedge or hash bonds that characterize the cis/trans stereochemistry of fused rings. • If enantiomers form, draw them both. The drop-down menu's + symbol can be used to divide up numerous goods. The typical formula for the Gilman reagent is R2CuLi, and it is a lithium and copper (diorganocopper) reagent. Alkyl or aryl groups make up R.

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5.4 × 10¹⁴ Jules of energy is produced.

Mass defect is the difference between the mass of a composite particle and the sum of the masses of its parts.

The mass defect can be explained using Albert Einstein's formula E = mc².

E is the energy in joules.

m is the mass defect in kilograms.

c is the velocity of light in metres per second (3.00 x 10⁸ m/s).

m = 0.0060 kg

E = 0.0060 kg × (3.00 x 10⁸ m/s)²

E = 5.4 × 10¹⁴ J

Average binding energy per nucleon equals total binding energy divided by mass number (sum of protons and neutrons in an atom).

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The mass of water displaced by the block is 120 g. The buoyant force on the block is the product of its weight and g value that is 1.17 N.

The force that brings an object to float on a fluid is called buoyant force. It is directly proportional to the displaced mass of the fluid by the submerged object.

Given that, density of water = 1 g/cm³

volume of block = 120 cm³

then, displaced mass of water = density of water × volume of block

m = 120 g = 0.12 kg

Buoyant force = mass displaced × g

Fb = 0.12 × 9.8 N = 1.17 N

Therefore, the buoyant force on the block is 1.17 N.

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which compound has the highest magnetic moment

The central atom of ICl2- has three lone pairs in the Lewis structure.

Lewis structures, also known as Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDs), are diagrams that show the covalent bonds that connect atoms in a molecule as well as any lone electron pairs that may be present. Any covalently bonded molecule, as well as coordination compounds, can be given a Lewis structure. Gilbert N. Lewis, who proposed the Lewis structure in his 1916 article The Atom and the Molecule, was named after it. Lewis structures extend the concept of the electron dot diagram by drawing lines between atoms to represent shared pairs in a chemical bond.

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Answer:

I dont really understand what you mean by this but if your asking for us to list subjects than i have a few:

.Biology

.Electricity

.The human body (Anatomy)

. Chemistry

-1.82 is the ph of the solution resulting from the addition of 25.0 ml of 0.20 m HCl to 50.0 ml of 0.10 m anilines (c6h5nh2). kb (c6h5nh2) = 3.8 x 10-10.

In chemistry, the pH scale is used to define the acidity or basicity of an aqueous solution. Historically, pH stood for "potential of hydrogen." The pH values of acidic solutions are typically lower than those of basic or alkaline solutions.

A negative pH is calculated when the molarity of hydrogen ions in a strong acid is more than 1 N, even though the pH scale generally ranges from 0 to 14. (Normality).

HCl reacts with aniline, thus:

C₆H₅NH₂ + HCl → C₆H₅NH₃⁺ + Cl⁻

Moles of HCl are:

0.025L × (0.20mol HCl / L) = 5.005 mol HCl

Moles of aniline are:

0.050L × (0.10mol HCl / L) = 0.005 mol aniline

Thus, after reaction, will remain:

5.005 mol -  0.005 mol = 5mol HCl

Moles of HCl in solution are equal to moles of H⁺, thus, moles of H⁺ are: 5 mol H⁺

As total volume is 25.0mL + 50.0mL = 75.0mL ≡ 0.075L

5 mol / 0.075L = 66.66 M

pH of solution = -log[H⁺]

pH = -log  66.66 M

pH = -1.82

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1600 - 1850 cm-1 wavenumber corresponds to the C=O double bond region on an IR spectrum.

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The Balanced equation is:

[tex]2Al(NO_3)_3 (aq) + 3Na_2S (aq) \rightarrow Al_2S_3 (s) + 6NaNO_3 (aq)[/tex]

A chemical reaction that has a balanced equation is one in which the total charge and the number of atoms in each of the components, for both the products and the reactants, are exactly equal. Simply said, each side of the reaction process has an equal mass and charge.

A chemically balanced equation is a symbolic representation of a chemical reaction that consists of symbols and formulas, in which a + sign separates the entities in both the reactant and product lists on the left and right, respectively, products and the reactants and an arrow pointing in the direction of the products to indicate the reaction's direction. The critical values of the stoichiometric numbers are shown as coefficients alongside the symbols and formulas of the entities.

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At equilibrium, the formation of products from reactants or reactants from products occur at the same rate.

Reaction goes in both direction, both reactants and product are present.

The amount of substance of reactants and products of reaction do not change when chemical reaction is in chemical equilibrium.

In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present in concentrations which not change with time.

Speed of direct and irreversible chemical reaction are equal.

For example, balanced chemical reaction in equilibrium:

3H₂ + N₂ ⇄ 2NH₃

Hydrogen (H₂ ) and nitrogen (N₂) are reactants.

Ammonia (NH₃) is product of the reaction.

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The pressure obtained when the temperature is raised to 50 degrees celsius is 135.5 KPa

From the question given above, the following data were obtained:

The final pressure can be obtained as illustrated below:

P₁V₁ / T₁ = P₂V₂ / T₂

Since the volume is constant, we have:

P₁ / T₁ = P₂ / T₂

125 / 298 = P₂ / 323

Cross multiply

298 × P₂ = 125 × 323

Divide both side by 298

P₂ = (125 × 323) / 298

P₂ = 135.5 KPa

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The answer is ppm that is parts per million.

This stands for "parts per million" and can also be written as mg/L (milligrams per liter). The mass of a chemical or contamination per volume of water is the unit of measurement here. On a lab report, ppm or mg/L both mean the same thing. The solution makes up 0.0001 percent of 1 PPM. It is equivalent to 1 mg in other measures like milligrams per kilogram, milligrams per liter of water, etc. Additionally, it is the 1/1,000,000th of something. PPM stands for one (1/,000,000) (defect or incident). Previously, suppliers were deemed to be of high quality if their failure rate was less than 10,000 PPM, or 1%.

The complete question is- A Lake Contains 0.05 Mg PO 2-/L (Orthophosphate). What Is the Concentration Expressed In:

A. Ppm

B. M (Molar)

C. Mg PO-P/L

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Answer:

What is the valency of elements in the group 'v' of the modern periodic table?

Answer: -3

What is the reasons for the fact that reactivity of group 'v' elements decrease as we go down in the group? ​

Answer: On moving down the group, there is a decrease in the electron affinity of elements. It is because, as the size of an atom increases, the valence electrons get further away from its nucleus. Thus, the attraction between them decreases.

The values are not precise but they are accurate because they are all close to the true value of 8.9 g/mL.

The density of a solid refers to the ratio of the mass to the volume of the object. This ratio is an intrinsic property because we could use it to identify a substance. In this case, the density of a substance can tell us exactly what the substance is.

Now let us try to obtain the density of the object in each case;

Case 1 = 38.951/56.5 - 52.0 = 8.7 g/mL

Case 2 = 43.830/56.1 - 51.2 = 9.1 g/mL

Case 3 = 41.418/ 57.1 - 52.4 = 8.8 g/mL

It is clear that the values are not precise but they are accurate because they are all close to the true value of 8.9 g/mL.

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Select the product or products formed by the proton transfer reaction that occurs when these two substances interact: Arrhenius acids.

Communication between two or more computer applications is made possible via application programming interfaces (APIs). It is a kind of software interface that provides a service to other software. An API specification is a document or a standard that outlines how to create or use a connection or interface of this type. The term "implement" or "expose" refers to a computer system that conforms to this standard. A specification or an implementation may both be referred to as an API.

An application programming interface, as opposed to a user interface, links computer systems to people, while a user interface does the opposite.

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The concentration in mass-volume percent of the solution is: 5.45 %

To solve this problem the formula and the procedure that we have to use is:

% m/v = m(solute)/v(solution) * 100

Where

Information about the problem:

Applying the concentration formula  we get:

% m/v = m(solute)/v(solution) * 100

% m/v = (13.9 g/255 ml) * 100

% m/v = 0.0545 *100

% m/v =5.45 %

In chemistry a solution is known as a homogeneous mixture of two or more components called:

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Answer:

D

Explanation:

because all cells in our body help us to build the body because they are multicellular

Answer: D) building blocks of all living things

Explanation:

Explanation

As temperatures rise, glaciers melt faster than they accumulate new snow. As these ice sheets and glaciers melt, the water eventually runs into the ocean, causing sea level to rise. Icebergs and frozen seawater also melt in warm temperatures but are not significant contributors to sea level rise.

When glaciers collapse and pieces of glacial ice fall into the ocean, they are called icebergs. Because the water from melting glaciers is held on land, the runoff greatly raises the volume of water in the ocean, causing a rise in sea level.

The enormous ice sheets that are present in Greenland and Antarctica are also referred to as glaciers. Glaciers melt more quickly as temperatures rise than they can store new snow. As these glaciers and ice sheets melt, the water eventually enters the ocean, raising the sea level.

Changes in the amount of sea ice can impede the regular flow of the ocean, which can impact the climate globally. The polar regions are the most vulnerable regions on Earth to climate change because even a slight temperature increase can cause larger warming over time.

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The bed pushes his feet up

Answer:

The reaction is the weight force of the boy

When heat is removed from water for example, it turns from a liquid to a gas.

The particles in water absorb this energy, giving them a higher energy level. The particles are able to change state when thermal energy is removed.

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Mass of the block of wood = 3.25 cm

Density of the block of wood = 0.945 g/ cm³

[tex]H_3[/tex]CОНС = acetaldehyde  also known as  ethanal ( It is a carbonyl compound)

НC[tex]H_3[/tex] = methane ( it is a hydrocarbon of alkane group)

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