what is the basis of a metallic bond

A the neutralization of protons by electrons

B the attraction of metal ions to mobile electrons

C the attraction of oppositely charged ions

D the attraction between neutral metal atoms

Dissolved in water, has been defined as the solute surrounded by the water molecules. Thus, option C is correct.

Dissolution has been defined as the process of the formation of solution with the addition of solute molecules in the solvent molecules.

The dissolution has been achieved with the addition of the solute molecules in the water. The water molecules tend to act the absorbent and surrounds around the solute particles.

There has been a formation of micelle like structure that has been mediated in the dissolution of the compound in water.

Thus, dissolved in water has been defined as the solute surrounded by the water molecules. Thus, option C is correct.

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Answer:

It is surrounded by water molecules.

Explanation:

Js did it ^v^

Answer:

See below.

Explanation:

No, the resulting charge will be 0.

For example Na+ + Cl- ---> NaCl.

The sodium chloride formed is neutral ( NO CHARGE).

Contrary to the original assertion, the charge on an ionic compound is not negative but rather neutral, as the total positive charges of the cations balance the total negative charges of the anions. Ionic compounds are formed when cations and anions bond due to electrostatic attraction, resulting in a neutral compound.

When ions with a positive charge, known as cations, form bonds with ions with a negative charge, known as anions, the result is an ionic compound. Contrary to the statement in the question, the overall charge on the resulting ionic compound is not negative. Instead, ionic compounds are electrically neutral because the total number of positive charges and negative charges balance each other out.

Ions form when atoms gain or lose electrons. A cation is formed by the loss of electrons and maintains a positive charge, while an anion is created by the gain of electrons and carries a negative charge. The ionic formula represents a balance of the total positive and negative charges so that the compound is electrically neutral.

For example, in sodium chloride (NaCl), sodium (Na+) is the cation with a +1 charge and chloride (Cl-) is the anion with a -1 charge. The charges balance out (+1-1=0), and the resulting compound is neutral. Similarly, in magnesium oxide (MgO), magnesium has a +2 charge and oxygen has a -2 charge, which also balance out to give a neutral compound.

The electrostatic attraction between these oppositely charged ions forms what is known as an ionic bond. Ionic bonds are strong and result in the formation of a structured ionic lattice or network. This attraction is explained by the principle that opposite charges attract, a fundamental concept in electrostatics.

Answer:

The digestive system uses mechanical and chemical methods to break food down into nutrient molecules that can be absorbed into the blood. ... Some animals use intracellular digestion, where food is taken into cells by phagocytosis with digestive enzymes being secreted into the phagocytic vesicles.

Explanation:

Digestion is crucial for breaking down meals into vitamins, which the frame uses for energy, growth, and cellular repair. food and drink need to be modified into smaller molecules of vitamins before the blood absorbs them and incorporates them into cells all through the frame.

The small gut absorbs the maximum of the vitamins in your food, and your circulatory system passes them on to different components of your body to keep or use. Special cells help absorb vitamins across the intestinal lining into your bloodstream.

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Answer:

C) Fe(s) + S(s) →FeS(s)

Explanation:

Answer:

B. The dilute solution contains less solute than the concentrated solution.

Explanation:

A diluted solution is a solution that has less solute (what is being dissolved) dissolved in the solvent (what is dissolving). A concentrated solution is the opposite, it has more solute than dissolved by the solvent.

A simple example is when you make iced tea (with powder). If you want a strong taste, you add more iced tea powder (solute) to the water (solvent) so it is more concentrated. If you want less, you add more water to dilute it.  

Answer:

1000 grams or 1 kg

Explanation:

All that matters for this question is the volume of the object (1000 mL) and that the density of the object is more than the density of water.

Since the density of water is 1 gm/ mL and 1000 mL have been displaced, the answer is 1000 grams or 1 kg. You can actually calculate this from a formula.

density = mass / volume

density = 1 gram/ml

Volume = 1000 mL

mass = ?

mass = volume * density.

mass = 1000 mL * 1 gram / mL

mass = 1000 grams

Notice how you are focusing on the volume of the object and the mass of the water.

Answer:

Alpha radiation

Explanation:

Polonium-212 decays to lead-208 by emission of an alpha particle according to the following equation.

²¹²₈₄ Po →²⁰⁸₈₂ Pb +⁴₂ He + Energy.

Te alpha particle is a helium particle. It has 2 protons and 2 neutrons.

The correct option is D.

Chemicals can have both beneficial and harmful effects on the environment, depending on their type, use, and context.

The effect of chemicals on the environment is a complex and multifaceted issue, and it cannot be simplified into a single option. Instead, the most accurate explanation is that:

Chemicals can be helpful or harmful to the environment.

Here's a detailed breakdown of this answer:

1. Harmful Effects of Chemicals:

2. Beneficial Effects of Chemicals:

3. Context Matters:

In conclusion, chemicals can have a range of effects on the environment, and their impact can be both beneficial and harmful. It's essential to consider the specific chemical and its application within a broader environmental context to make informed decisions about their use and regulation.

The complete question is here:

Which best explains the effect of chemicals on the environment?

A. Chemicals are only harmful to the environment.

B. Chemicals do not affect the environment.

C. Chemicals are only helpful to the environment.

D. Chemicals can be helpful or harmful to the environment.

Answer:

0.8 liters.

Explanation:

By proportion  the volume of the new solution will be (12/1.5) * 100 ML

= 800 ml = 0.8 liters.

Answer:

A

Explanation:

Answer:

Ions

Explanation:

because they contain positive and negative charges

The grouped atoms with charges are called ions.

When an atoms losses electron, then it forms positive ion or cation whereas when an atoms losses electron, then it forms negative ion or anion. The attraction between two ions leads to formation of the ionic bond.

There are many types of ions which includes monoatomic ions which contains one atoms and polyatomic ions which contains two or more atoms. When atoms are converted into ions, then the atom is undergoing ionization process.  

Answer:

The number of core electrons = 18 electrons.

The number of valence electrons = 1 electron.

Explanation:

∴ the number of core electrons = 18 electrons.

∴ the number of valence electrons = 1 electron.

Answer:

18 core electrons

1 valence electron

Explanation:

In the periodic table, potassium stands at the head or beginning of the fourth period. It is found in group 1. The third period ends with argon having 18 electrons. This implies that potassium should have at least 18 core electrons. Since it is found in group 1 having only 1 valence electron, it is expected to also have one valence electron.

Its electron configuration summarizes these statements above; 1s22s22p63s23p64s1

There are 18 core electrons and one valence electron in the outermost 4s1 orbital (the fourth shell)

Answer:

I believe it's B.

Explanation:

Hope my answer has helped you!

Answer:

The last option

Explanation:

The Bohr model was an attempt to explain atomic hydrogen's spectrum. This was done by establishing energy levels of separate electron orbits in the atom.Thos model was followed by the Schrödinger model.

Bohr's model built upon Rutherford's by establishing that electrons move around the nucleus in certain paths or 'shells', and focusing more on the location and energy of electrons, a crucial component in understanding atomic structure and behavior.

Bohr’s model added new elements to Rutherford’s model, demonstrating a better understanding of the atom's structure and behavior. One of the key differentiating factors was Bohr's idea that electrons orbit around the nucleus in set paths (or energy levels).

While Rutherford's model did identify the nucleus as positively charged and indicated that a large volume of space surrounds it, it didn't provide a specific path for the electrons' movement. The Bohr model, in contrast, presented the concept of quantized energy levels. According to this model, electrons could occupy specific energy levels and could jump between these levels by absorbing or emitting discrete amounts of energy.

So, to answer your question, Bohr's model, unlike Rutherford’s, established that electrons move around the nucleus in certain paths or 'shells', and it focused more on the location and energy of electrons, which was key to understanding atomic structure and behavior.

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A covalent bond between two atoms is likely to be polar if one atom is more electronegative than the other. This happens because the more electronegative atom pulls the shared electrons closer to itself, resulting in a polar covalent bond.

A covalent bond between two atoms is likely to be polar if one of the atoms is much more electronegative than the other. A covalent bond is formed when two atoms share electrons. However, when one atom is significantly more electronegative, it pulls the shared electrons closer to itself, creating a partial negative charge. The other atom then has a partial positive charge, creating a polar covalent bond.

For example, in a water molecule (H2O), the oxygen atom is more electronegative than the hydrogen atoms, resulting in a polar covalent bond. The other options given (b, c, d, e) are either special conditions of a covalent bond or not related to the polarity of a bond at all.

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His experiment was most likely designed to demonstrate the law of conservation of energy, which states that energy the total energy of an isolated system remains constant; it is said to be conserved over time. This law means that energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another. So, he was trying to demonstrate that the amount of heat energy released was equal to the number of calories (amount of energy) stated to be in the candy bar.

Answer- The correct choice of answer out of all would be option C.

Explanation

The given substance magnesium chloride made out of combination of chlorine and magnesium is a compound. Where magnesium has two positive ions and chlorine has two negative ions which trigger the reaction.

Hence the oxidation of the 2 positive ions of Magnesium takes place  and reduction of the Negative Ion chlorine has to offer attract and stabilize each other by forming the compound .

Answer:

liquid

Explanation:

The atoms in a liquid have a definite volume, but move quickly enough to overcome the forces of attraction between them.

The smallest component of ordinary stuff that makes up a chemical element is very much an atom.

A liquid would be an incompressible flow fluid which thus takes on the shape of the container while maintaining an even volume regardless of pressure.

Therefore, the atoms in a liquid have a definite volume, but move quickly enough to overcome the forces of attraction between them.

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They would form a single covalent bond and become Br2.

They would become a covalent bond and become Br2.  

Answer:

450.0 L.

Explanation:

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant,

T is the temperature of the gas in K.

(P₁V₁) = (P₂V₂).

V₁ = 760.0 L, P₁ = 450.0 mm Hg,

V₂ = ??? L, ​P₂ = 760.0 mm Hg (standard pressure = 1.0 atm = 760 mm Hg).

∴ V₂ = (P₁V₁)/(P₂) = (760.0 L)(450.0 mm Hg)/(760.0 mm Hg) = 450.0 L.

Answer:

rising pressure and decreasing temperature

Explanation:

Reversible reactions have a bit practical interest, but in some cases the technological benefit or profitability of production requires a shift in the equilibrium of a reversible reaction.

Increasing pressure

With increasing pressure on this system, the concentration of substances increases. In this case, the balance will shift towards smaller volumes. On the left side of the equation, two volumes of nitrogen react with one volume of hydrogen. On the right side of the equation there are two volumes of ammonia, i.e. the number of volumes on the right side of the equilibrium reaction is less than on the left and, therefore, with increasing pressure, the reaction equilibrium will shift to the right.

Decreasing temperature

When the temperature rises, the equilibrium shifts towards the endothermic reaction, and when the temperature decreases, towards the exothermic reaction and the reaction given above is the exothermic.

To optimize the yield of ammonia in the Haber process, increasing system pressure shifts the chemical equilibrium towards producing more NH3. This results in a higher production rate and economic efficiency, aligning with industrial goals.

In the context of chemical engineering, changing the chemical equilibrium in the production of ammonia (NH3) from nitrogen (N2) and hydrogen (H2) gases can highly benefit a chemical company. The Haber process is grounded in the reaction: N2 + 3H2 ⇌ 2NH3 + energy. By adjusting conditions such as pressure and temperature, the yield of ammonia can be increased according to Le Chatelier's Principle.

To shift the equilibrium towards the formation of more NH3, increasing the pressure of the system is effective because the reaction results in a decrease in the number of gas particles. According to the balanced chemical equation, we start with 1 mole of nitrogen and 3 moles of hydrogen to get 2 moles of ammonia. Since the reaction produces fewer gas particles as products, an increase in pressure will favor the production of ammonia, thus potentially increasing the yield and efficiency of the process.

Increasing the pressure is also practical considering industrial production constraints. The benefits of manipulating the chemical equilibrium in this manner include increased production rates and improved economic efficiency, as higher yields of ammonia mean more effective use of feedstock gases, which contributes to cost savings for the company.

Answer:

Explanation:

The hydroxyl ion concentration of the solution [OH⁻] is 5.5 x 10⁻¹⁰M

Problem:

To find [H₃O⁺] and the pH of the solution:

We know that the ionic product of water has been experimentally determined and it is given for a pure water as 1.0 x 10⁻¹⁴mol²dm⁻⁶ at 25°C.

So : [H₃O⁺][OH⁻]= 10⁻¹⁴mol²dm⁻⁶ at 25°C

To find the concentration of the hydroxonium ions:

                         [H₃O⁺] = [10⁻¹⁴] / [OH⁻]

                          [H₃O⁺] = 10⁻¹⁴ / 5.5 x 10⁻¹⁰ = 1.8 x 10⁻⁵M

To find the pH of the solution, we know that ;

      pH = -log[H₃O⁺] = -log  1.8 x 10⁻⁵ = 4.74

The solution is acidic

Answer:

The pressure remains constant

Explanation:

this is an example in charles law where as the temperature increases so does the volume.

Answer:

The correct answer is "Pressure".

Explanation:

As the propane torch is ignited inside the hot air balloon, the volume of the gas increases and the temperature of the gas also increases. This causes the density of the gas to decrease, keeping the pressure constant throughout the balloon, regardless of the small amount of gas lost through the balloon hole.

Have a nice day!

Answer:

C)

Explanation:

The first step is to write the whole reactions:

A)[tex]HCl~+~NaOH~->~H_2O~+~NaCl[/tex]

B)[tex]Cu~+~AgNO_3~->~Cu(NO_3)_2~+~Ag[/tex]

In A) reaction we will have an acid-base reaction (double replacement reaction). In this reaction, the oxidation number is the same for all atoms on both sides of the reaction.

In B) the oxidation number of Cu will change from zero to +2 and the oxidation number of Ag will change from +1 to zero. So, the Cu will be oxidized and the Ag will reduce. So, if we have a redox reaction for B) the charge must be equal on both sides.

Answer:

i think b

Explanation:

Answer:

None of the above.

Explanation:

a, c, and d are correct.

a. In a reaction at equilibrium, the forward and reverse reactions are occurring at the same rate.

c. If the position of equilibrium lies to the right, the forward reaction has "gone further" than the reverse reaction.

d. Even if the position of equilibrium is far to the right, the balanced equation for the equilibrium has equal numbers on each side of the equation. For example, in the equilibrium reaction 2H₂ + O₂ ⇌ 2H₂O, the position of equilibrium is far to the right but there are equal atoms on each side of the reaction.

b. is wrong. It is exceptionally rare for reactants and products to have the same concentrations at equilibrium.

Answer:

Malleability

Explanation:

Answer:

sublimation

Explanation:

the other choices release energy

Hey mate here's your answer

Ans: B, Sublimation. This is because you must input energy in order to get a solid to go directly to a gas while the other ones release energy (and dispersion has nothing to do with these at all)

hope so the following may help you thanks

Answer: c.

Electrons are transferred → Ions form → Ions are attracted to each other

have a great day

Explanation:

Answer:

Electrons are transferred – lons form lons are attracted to each other

Explanation:

Let us use the formation of NaCl as an example. Sodium ion forms by transferring one electron to chlorine and chloride ions form by accepting this one electron from sodium hence electron transfer must be the first step in ionic bond formation. Once electrons are donated and received, ions are formed which are immediately attracted to each other to form the ionic compound.

Answer:

gamma ray

Explanation:

Answer:

None of the above.

Explanation:

We have to find the  particle which have negative charge.

1.Neutrino

It has no negative charge.The charge on neutrino particle is zero.Therefore,It is neutral particle.

Hence,option A is false.

2.Positron

It has no negative charge.The charge on the particle is +1 e.Therefore, it is false.

3.Gamma ray

It is a from of electromagnetic radiation.It has charge 0.Therefore, it has no negative charge.

Hence, option 3 is false.

Answer:None of the above.