Solutions AandB have the same volume of solvent but solution A has more solute particles in it than B Solution Ais more….than B
What us the brackets

The shape becomes bent V-shaped AND, molecular geometry is a triangular planar shape.

In the hybridization model, the number of hybrid orbitals used by the central atom is the same as the number of electron groups around the central atom. Thus, 2 electron groups (linear) = sp hybridization

If there are only three total electron groups, holding the place where two of those are bonding groups and one is a lone pair. then the shape becomes bent V-shaped, 2 bonds and 1 lone pair the shape is bent. For sp² hybridized central atoms the only possible molecular geometry is a triangular planar shape.

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Answer:

The mass of MgO formed is 160g

Explanation:

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The option that shows that the kinetic-molecular explanations of this principle is NOT correct is option B: The number of molecular impacts per unit area decreases at a higher temperature.

The assumption that matter is made up of microscopic particles that are always in motion forms the foundation of the kinetic-molecular theory, which explains the states of matter.

Therefore, based on the use of observable characteristics as well as the use of behaviors of solids, liquids, as well as gases are known to be explained by kinetic-molecular theory.

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In the electrolysis of molten magnesium chloride;

a. the half reactions are as follows:

Reduction half reaction: Mg²⁺ + 2 e⁻ → Mg (s)

Oxidation half reaction: 2 Cl (aq) →  Cl₂ (g)

b. magnesium ion is reduced whereas chloride ion is oxidized.

c The minimum voltage required to separate magnesium chloride into its elements is 386000 C of electricity.

Electrolysis is the decomposition of a substance known as an electrolyte when an electric current is passed through a solution or molten form of the substance.

During electrolysis, oxidation and reduction reactions occur that can be split into half equations.

In the electrolysis of molten magnesium chloride, the overall reaction is given below:

MgCl₂ (l) → Mg (s) + Cl₂(g)

a. The half reactions are as follows:

Reduction half reaction: Mg²⁺ + 2 e⁻ → Mg (s)

Oxidation half reaction: 2 Cl (aq) →  Cl₂ (g)

b. Based on the half equations given above, the magnesium ion is reduced as it accepts two electrons to become a neutral magnesium atom. Chloride ion is oxidized as two chloride ions lose two electrons to become chlorine gas.

c The minimum voltage required to separate magnesium chloride into its elements is determined from the moles of electrons involved in the reaction.

Magnesium ion and chloride ions require two moles of electrons each to become the neutral element. Thus, 4 moles of electrons are required.

4 moles of electrons = 4 * 96500 C of electricity

4 moles of electrons = 386000 C of electricity.

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The law of conservation of mass states that the mass of the reactants will equal the mass of the products.

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The mass of unknown liquid is 2080g.

Let us take formula for calculating density

Density = [tex]\frac{mass}{volume }[/tex]

therefore , mass = [tex]density\times volume[/tex]

                             = [tex]2.6\times 800[/tex]

                              = 2080 g.

The mass is a quantitative measure of inertia in physics, a fundamental property of all matter. It is actually the resistance that a body of matter offers to change its speed or position under the influence of a force. The greater the mass of the object, the smaller the change caused by the force applied to it. In the International System of Units (SI), the unit of mass is the kilogram, which is defined as Planck's constant, which is defined as Planck's constant, which is equal to 6.62607015 × 10–3 joules per second. One joule equals one kilogram times one square meter per second.

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A pot of salted pasta water is an example of a heterogeneous mixture.

If a mixture's composition varies over the course of the mixture, it is said to be heterogeneous. Vegetable soup is a complex concoction. The proportions of the different vegetables and other ingredients will vary from mouthful to mouthful. Mixtures that contain two or more phases are said to be heterogeneous. Examples include ice cubes in a beverage, sand and water, and salt and oil.

A homogenous mixture is one whose composition is constant across the entire mixture. Because the soluble salt is distributed evenly throughout the whole salt water sample, the salt water described above is homogenous.

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Answer:

Sedimentary rocks like bituminous coal, limestone, and sandstone, given enough heat and pressure, can turn into nonfoliated metamorphic rocks like anthracite coal, marble, and quartzite. Nonfoliated rocks can also form by metamorphism, which happens when magma comes in contact with the surrounding rock

Explanation: THEREFORE I'D SAY TRUE!

         Certain metal-based nanoparticles have the potential to interact with the hydrogen peroxide found in every cell and change it into a hydroxyl radical that can enter the nucleus and cause DNA damage.

     Scratch-resistant eyewear, crack-resistant paint, anti-graffiti coatings for walls, transparent sunscreen, stain-repellent fabrics, self-cleaning windows, and ceramic coatings for solar cells are all products made with nanoparticles today.

    In addition to living matter, naturally produced nanoparticles can also be found in volcanic ash, ocean spray, fine sand, and dust (e.g. viruses). The diversity of synthetic nanoparticles is on par with that of its counterparts in nature, if not greater.

    The usage of nanoscale materials in medications, medical devices, biologics, cosmetics, and food is anticipated to rise significantly in the coming years, according to the FDA, which has already assessed and authorized a few nanotechnology-based items.

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Larger rocks are broken down to form smaller rocks which over time, form the basis for soil is True.

Weathering is the decomposition or dissolution of surface rocks and minerals. When rock is mined rock fragments and minerals are carried away through a process called erosion. Water acids salts plants animals and temperature changes are all factors in weathering and erosion.

The process of breaking down large rocks into smaller pieces and sand is called weathering. The process of breaking down large rocks into smaller pieces and sand is called weathering. Weathering is a term that describes the general process by which surface rocks break down into sediments, clays, soils, and dissolved substances in water. The weathering process usually begins when the crust is lifted by tectonic forces.

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1. The key component represented in the model is the Reflection of light.

2. Bouncing back of light relationships are shown in the Figure 2 model.

Reflection is when mild bounces off an item. If the surface is smooth and bright, like glass, water or polished metal, the light will reflect at the same angle as it hit the floor. This is known as specular reflection. light reflects from a clean floor on the same angle as it hits the floor.

In line with the law of reflection, the attitude of prevalence equals the perspective of reflection. To view an image of an object in a mirror, you should sight alongside a line at the photo area.

Reflection is the bouncing back of light while it moves a easy surface. Refraction is the bending of light rays whilst it travels from one medium to some other.

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The ranking of the transitions from lowest to highest energy, wavelength, and frequency is;

From the Bohr model of the atom, we know that an electron in the hydrogen atom is able to absorb a photon move from a lower to a higher energy level. This is what we refer to as the excitation of the electron in the atom.

Now we also know that the spectrum of the hydrogen atom can be explained on the  basis of the fact that electrons are able to move from a lower to a higher energy level and vice versa, the energy of each of the transition is dependent on the difference between the transition.

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We can measure the volume of a liquid by using the graduated cylinder and the SI unit which is used for the liquid volume is cubic meter (m3).

Simply we can find or measure the volume of a liquid by using either a graduated cylinder or with the help of the burette. As this is clear from the name of the graduated cylinder is that cylinder in which we can measure the volume of a liquid. The graduated cylinder is sealed from one end and opened from the other side. The scales are also drawn on the graduated cylinder for finding the values.

The SI unit which is used for the liquid volume is called a cubic meter (m3). It is a derived unit. Liter (L) is a special name for the cubic decimeter (dm3). The symbol for the liter is the uppercase letter “ell” (L) is desired to keep away from the danger of misunderstanding among the lowercase letter “ell” (l) and the number one (1).

So we can conclude that graduated cylinder is used for measuring the volume of a liquid and the liquid volume is cubic meter (m3).

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When using a water-cooled condenser, the water should constantly move over the condenser. to make this happen, the water should flow in at the bottom part and should flow out at the top part.

Water cooled condenser is heat exchanger. it will removes heat from the refringent and transfer to the water running through. The advantages of this system is it is lasts year longer. it has higher heat transfer rate

Thus, When using a water-cooled condenser, the water should constantly move over the condenser. to make this happen, the water should flow in at the bottom part and should flow out at the top part.

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Radiant Energy from the sun is the source of the energy that plant cells use for photosynthesis. The first response is the correct answer.

Nearly all of the energy on Earth comes from the sun. Through a process known as photosynthesis, it enables plants and other organisms to convert water and carbon dioxide into sugars.

The function of sunlight in photosynthesis is to supply energy. Heat and light are two different types of energy that the sun emits.

Chlorophyll can capture energy, which can then be converted into sugar during photosynthesis. Photosynthesis slows down when a plant receives insufficient sunlight. This implies that the plant's energy source—sugar—might not be getting to it in sufficient amounts. We can clearly see how crucial sunlight is to life.

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Answer:

P4O10 + H2O → H3PO4

Explanation:

The question requires us to order the steps given in a way that they properly represent how to prepare and label a solution.

To prepare a solution from a solid solute, we must calculate the amount of solute and solvent necessary, weigh the mass of solute and add it to a proper flask, add enough water to prepare the solution (as previously calculated) and then correctly label the solution with its molarity.

Considering the steps given and the information above, and also taking into consideration that all possible answers allow only three steps, we can choose the following order:

1) "calculate and mass the number of grams of solute needed, add to flask" (V)

2) "add enough water to make the total necessary volume of solution" (VI)

3) "label the solution with the correct molarity" (I)

Therefore, this is the order of steps to prepare the solution: V - VI - I

The best option to answer this question is the third one (letter C).

the answer would be V,VI,I

The pH value of the unknown solution that underwent titration was 1.27.

First, we write the balanced reaction equation between HCl and calcium hydroxide:
[tex]2HCl + Ca(OH)_{2}[/tex]  → [tex]CaCl_{2} + 2H_{2}O[/tex]

So we know that 1 mole of calcium hydroxide reacts with 2 moles of HCl. We now calculate the amount of calcium hydroxide used in the titration:
c = n/V ⇒ n = V*c = 0.0135 L * 0.10 M = 0.00135 mol

The amount of HCl will be twice the amount of calcium hydroxide, so 2 * 0.00135 mol = 0.0027 mol.

We can now calculate the concentration of HCl in the original solution (and, because HCl is a strong monoprotic acid, the concentration of H+ ions will be equal to the concentration of HCl):

c = n/V = 0.0027 mol / 0.05 L = 0.054 M

pH value is a negative logarithm of concentration of H+ ions:

pH = -log0.054 = 1.27

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No, they won't be at the same temperature because a larger object needs to be at a lower temperature than a smaller object in order for them to have the same total amount of thermal energy.

Thermal energy can be seen in the boiling of water on a stove. When a substance's atoms and molecules vibrate more quickly as a result of a rise in temperature, thermal energy is created.

Although thermal energy doesn't exert force in the sense of a push or a pull, it does produce particle movement in an item or system. When high thermal energy particles come into contact with another object, they cause the object to move more and perform work as a result.

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Answer

Explanation:

Give the names of all of the above acids

M(molarity of the phosphoric acid solution)=0.13 mole/L

molarity is a measure of the concentration of solute in a solution.

EQUATION OF BALENCE REACTION---->

3NaOH + H3PO4 ---->Na3PO4+3H2O

n MOLE OF NaOH REQUIED n/3 MOLE OF H3PO4 to completely react.

formula required to find the molarity is

n= number of mole

M= molarity

V= volume

n=M×V

n=  0.2255 m×35.60 ml

n= 8.02 m mole.

and, mole of H3PO4 to completely react = n/3

=8.02 /3

=2.67 m mole

now, according to question-->

2.67 m mole=M×19.90 ml

concentation of the solute in phosphoric acid solution is 0.13 mole/L

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The molar mass of Br is 79.904 grams/mole and the molar mass of Cl is 35.453 grams/mole.

There are 3 Cl atoms so we'll multiply it's molar mass by 3. So:

35.453 x 3 = 106.359

Now we add this number to the molar mass of Br and we get:

106.359 + 79.904 = 186.263

The molar mass of BrCl3 is 186.263 grams/mole

Now we just multiply this number by the amount of moles in the question which is 204.

186.263 x 204 = 37997.652 g which is 37.997652 kg or 38.0 kg if significant figures are important.

The decay equation to represent the nuclear fission reaction in which an atom of U-235 absorbs a neutron and produces an atom of Sb-123, four neutrons, and an unknown nuclide, X is given below:

²³⁵₉₂U + ¹₀n → ¹²³₅₁Sb + ¹⁰⁹₄₁X + 4 ¹₀n

The nuclide X is Niobium Nb-109.

Nuclear reactions are reactions that involve changes i the nuclear composition of the atom of elements involved in the reaction.

Nuclear reactions are of two types:

Nuclear fission - this involves the splitting of the nucleus of a heavy atom or large atoms into the nucleus of two or more lighter atoms.

Nuclear fusion - this is the process by which the nucleus of a heavy atom is produced as a result of the fusion or combination of the nucleus of atoms of two or more lighter elements.

The given reaction in which an atom of U-235 absorbs a neutron and produces an atom of Sb-123, four neutrons, and an unknown nuclide, X is an example of nuclear fission reaction.

The decay equation to represent this reaction and the other nuclide, X, formed in this reaction is given below:

²³⁵₉₂U + ¹₀n → ¹²³₅₁Sb + ¹⁰⁹₄₁X + 4 ¹₀n

The nuclide X is Niobium Nb-109.

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The arrangements of particles at the atomic level for a liquid and a solid are compared as the particles in gas do not follow any specific order and are uniformly spaced out.

There is no regular arrangement of liquids next to one another. The solids are regularly arranged and closely packed. Since liquid particles are more dispersed than solid ones, they take on the shape of their container rather than having a distinct shape yet having a distinct volume. Because solid particles are more closely packed together and certain solids even have atomic-level particle patterns, they have a distinct shape that does not alter unless the solid changes state.

The arrangement of the particles in a liquid is more haphazard than that of the particles in a solid. But since they are closely packed, the atoms of solids and liquids are comparable.

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Four-carbon, four-carbon, four-carbon molecule.

In eukaryotes, the citric acid cycle occurs in the matrix of mitochondria, as does the conversion of pyruvate to acetyl-CoA. In prokaryotes, these two steps occur in the cytoplasm. The citric acid cycle is a closed loop; the last part of the pathway re-forms the molecule used in the first step. There are eight main steps in the cycle.

In the first step of the cycle, acetyl-CoA combines with a four-carbon acceptor molecule, oxaloacetate, to form a six-carbon molecule called citrate. After a rapid rearrangement, this six-carbon molecule releases two of its carbons as carbon dioxide molecules in two similar reactions, each time releasing a molecule of NADH.

Start superscript, 1, end superscript. The enzymes that catalyze these reactions are important regulators of the citric acid cycle, speeding it up or slowing it down depending on the energy requirements of the cell^2 2

squared.

The remaining four-carbon molecule undergoes a series of further reactions that first produce a ATP molecule-or, in some cells, a similar molecule called GTP and then the electron carrier FAD to for_2FADH 2, start subscript, 2, end subscript, and finally generation of another NADH. This reaction sequence regenerates the starting molecule oxaloacetate, allowing the cycle to be repeated.

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The gas that will need the slowest time to get out of a gas syringe is helium.

Helium is the second lightest element, and it has a low boiling point of -456°C. As such, it will take longer than any other gas to escape from a gas syringe.

Helium is a noble gas and is less reactive than other gases, so it will not react with the needle as quickly. Helium also has low conductivity, which means it takes less energy to transport helium through an object than it does for other gases. In addition, helium is odorless and tasteless, so it won't create any unwanted odors or smells when you use it in your experiments.

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The purpose of this control is that it provides a reference value for comparison while doing experiment.

Salt (NaCl) is a Non-volatile means that it does not evaporates readily when heated.

When a non-volatile substance is added to volatile substance. The boiling point of the volatile substance get increased. This phenomena is called elevation in boiling point (colligative property).

She has measured the temperature of the water with no salt added so that she could compare it with the temperature when salt is added in the water.

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