Which is the larger atom S or Mg

The density of pure water is 1 g/cm^3.

Its density is 0.98 g cm 3 at room temperature, in comparison with the handiest zero.92 g cm 3 for ice, a reality that has to be defined through atomic, and molecular concepts. If ice has been no longer much less dense than water, it might sink, having a devastating impact on lake backside ecosystems. believe it or now not, ice is honestly about 9% much less dense than water. for the reason that water is heavier, it displaces the lighter ice, causing the ice to glide to the pinnacle.

The density of ice is about 90 percent that of water, but that could range because ice can contain air, too. meaning that about 10 percent of an ice cube or iceberg will be above the water line. The density of water is maximum at four∘C, and the density of the ice is much less than the water due to its susceptible intermolecular pressure of attraction. as the density of water is more, it's miles heavier than ice. therefore ice floats on the floor of the water. Ice continually floats due to the fact it's far less dense than everyday water. because frozen water molecules shape a crystal.

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Answer:

D

Explanation:

When you first put it in the pot he tastes fine because you didn't let it sit for a bit but by letting it sit the salt has had time to evaporate.

The process that makes the soup so salty is the evaporation of water which makes the concentration of salt high. Thus, the correct option for this question is D.

Evaporation may be defined as a type of process through which the amount of liquid gets transformed into the gaseous phase due to extreme heat or high temperature. It is a type of vaporization that alters the surface of a liquid into the vapor phase.

According to the question, Luis added the amount of salt in the recipe and tasted it, it is fine and accurate. Then, he let the chicken soup simmer for two hours to blend the flavors, at that time he found that the soup was too salty.

Therefore, some water evaporated and concentrated the salt is the best statement that illustrates a valid and accurate reason behind the high concentration of salt. Thus, the correct option for this question is D.

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The jumbled word "gzeysktqix" can be unscrambled to form the word "skyzigtext."

Here are possible words that can be made from this jumbled word:

Sky: Referring to the atmosphere above the Earth.

Zig: Describing a series of sharp turns or angles.

Text: Referring to written or printed words.

Six: The number following five and preceding seven.

It seems that the jumbled word has provided a mix of letters that can be rearranged to form these words. This exercise is likely intended to enhance the student's vocabulary skills, spelling ability, and problem-solving skills. By unscrambling the letters, the student is encouraged to explore different word possibilities and apply their knowledge of language. It also promotes critical thinking and creativity as they find valid words from the given set of letters.

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The electron is in the 5s orbital.

The term orbital is the region in space where there is a high probability of finding an electron. There are four quantum numbers that define an orbital and these are;

Principal quantum number

Orbital quantum number

Spin quantum number

Magnetic quantum number

Let us now look at the sets of quantum numbers as given, a look at the principal and the orbital quantum numbers (m and l) tell us that the electron is in the 5s orbital.

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Answer:

The waters' temp increased

Explanation:

The temperature of the water in the swimming pool has increased due to the heat from the Sun. As a result, the particles in the water are moving faster and have a higher kinetic energy than in the morning.

Answer:

London Dispersion Only

Explanation:

BF3 is non polar and nonpolar molecules only have london disperion forces

Answer:

Tertiary amine

Explanation:

An amine in which the nitrogen atom is directly bonded to three carbons of any hybridization which cannot be carbonyl group carbons.

We can be able to determine the amount of toxic lead in the water by thee use of  atomic absorption spectrophotometry.

A toxic metal is known as any metal that is able to affect the health of people. We know that toxic metals are mostly the metals that are in the group of the heavy metals.

Now we know lead as a metal that is able to cause brain damage especially in children. This is why it is very important that there should be a thorough examination in order to know the amount of lead that is present in water.

There are several methods that could be applied in the determination of lead and one of the most common methods is by the use of atomic absorption spectrophotometry which is able to detect even the minutest amount of the led in solution.

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The structural formula of butanol is C4H9OH. It consists of a chain of four carbon atoms, with a hydroxyl (-OH) group attached to one of the carbon atoms. Butanol has several structural isomers, which have the same molecular formula but different structural formulas.

A structural isomer is a compound that has the same molecular formula as another compound but has a different arrangement of its atoms. A string of 4 C atoms are bonded above, below, left, and right to H, except the second C, which is bonded below to O, which is bonded below to H is a structural isomer of butanol.

This is called butan-2-ol. The structural formula of butan-2-ol is CH3CH(OH)CH2CH3. In this isomer, the hydroxyl group is attached to the second carbon atom in the chain, whereas in butanol, the hydroxyl group is attached to the first carbon atom in the chain.

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Answer:The correct options is, H2O and H3O+

Explanation:

According to the Bronsted Lowry conjugate acid-base pair concept, an acid is a substance which donates protons and a base is a substance which accepts protons.

From the given options,  and  represents a base-conjugate acid pair.

The balanced reaction will be :H2O +H+ = H3O+

In this, H2O   is a base which accepts a proton to form conjugate acid .

Hence, the correct options is,H2O and H3O+

Taking into account the Brønsted-Lowry acid-base theory, the conjugate acid – base pairs are H₂PO₄²⁻/HPO₄⁻ and H₂O/OH⁻.

The Brønsted-Lowry acid-base theory (or the Brønsted-Lowry theory) identifies acids and bases based on whether the species accepts or donates protons or H⁺.

According to this theory, acids are proton donors while bases are proton acceptors. That is, an acid is a species that donates an H⁺ proton while a base is a chemical species that accepts an H⁺ proton from the acid.

So, reactions between acids and bases are H⁺ proton transfer reactions, causing the acid to form its conjugate base and the base to form its conjugated acid by exchanging a proton.

In other words, a conjugate base is an ion or molecule resulting from the acid that loses the proton, while a conjugate acid is an ion or molecule resulting from the base that gains the proton:

acid + base ⇄ conjugate base + conjugate acid

In this case, you know

HPO₄⁻ + OH⁻ → H₂PO₄²⁻ + H₂O

HPO₄⁻ behaves like acid because donates an H⁺ proton while OH⁻ behaves like base because accepts an H⁺ proton from the acid.

So, H₂PO₄²⁻ is the conjugate base of the HPO₄⁻ and H₂O is conjugate acid of OH⁻.

In summary, the conjugate acid – base pairs are H₂PO₄²⁻/HPO₄⁻ and H₂O/OH⁻.

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Answer:

John Dalton

Explanation:

1. A radical is a reactive intermediate with a single ____________ electron, formed by ____________ of a covalent bond.

1. A: Unpaired, and homolysis

2. Allylic radicals are stabilized by ____________ , making them ____________ stable than tertiary radicals.

2. A: Resonance, and more

3. A compound that contains an especially weak bond that serves as a source of radicals is called a radical ____________ .

3. A: Initiator

4. Treatment of cyclohexene with N-bromosuccinimide in the presence of light leads to ____________ by ____________ intermediates.

4. A: Allylic substitution by radical

At pOH value  of 6.0 the pH value of the following solution is 8.0 and the concentration of [\(H^{+}\) ] ion is \(10^{-8}\)

In this question we will apply the formula

      pH +pOH = 14 . . . . . . . . . . . . .(1)

where pH = concentration of [\(H^{+}\) ] ion

pOH = concentration of [\(OH^{-}\) ] ion

As per the question

pOH =6.0

Putting the value of pOH in equation (1) we get the value of pH

              pH + 6.0 =14

             pH = 14 -6.0

             pH  = 8.0

 The value of pH if the pOH value is 6.0 is 8.0

To find the concentration of \(H^{+}\) ion we will use the following formula

This is calculated by the formula

                                 [\(H^{+}\)} = \(10^{-pH}\)

where we will write the values of pH

Hence the concentration of [\(H^{+}\)} ion is \(10^{-8}\)

Therefore at  pOH of 6.0 the pH value of the following solution is 8.0 and the concentration of [\(H^{+}\) ] ion is \(10^{-8}\)

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The complete question is -

What is the pH value and concentration of [\(H^{+}\) ] ion of the following if the pOH value of the solution is 6.0 ?

The bonds with more polarity are a)C-Cl, b)Si-Cl and c)N-Mg

The electronegative values are indicated by the term e, whose highest difference values indicate that the bond is highly polar. For the given values,

a) C-H and C-Cl, the Electro Negativity difference between C-Cl is 3.16-2.55 = 0.61 and electronegativity between C-Cl is 2.55-2.1 = 0.45. Since the electronegativity of C-Cl is greater than the electronegativity of C-H, C-Cl is more polar.

b)The electronegativity of Si-Cl is 3.16-1.9 = 1.26 and electronegativity of Si-Li is 1.98-0.98 = 0.98. Since the electronegativity of Si-Cl is greater than Si-Li, it is more polar.

c) In N-Cl and N-Mg, the Electro Negativity difference between N-Cl is 3.16-3.04 = 0.12, and the electronegativity between N-Mg is 3.04-1.31 = 1.73 Since the electronegativity of N-Mg is greater than the electronegativity of N-Cl, N-Mg is more polar.

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Answer:

According to Coulomb’s law, the electric force between two identical negative charges is inversely proportional to the square of the distance between them. This means that as the distance between the two charges decreases, the electric force between them will increase. Since the charges are both negative, they will repel each other, so as they move closer together, the repulsive force between them will become stronger.

Explanation:

Sedimentation, filtration, and coagulation are the treatments that will help remove contaminants from minerals or from the pipes carrying water from a source.

Sedimentation is a process in which suspended particles settle out of water. It is one of the most basic techniques for removing particles from water. As particles settle, they become trapped in the bottom of a container or settle to the ground in an outdoor setting

Filtration is a method of removing particles from a fluid. It is a physical or chemical separation method that separates solids from fluids (liquids or gases) by adding a medium through which only the fluid can pass.

Coagulation is the process of using chemicals to remove contaminants from water. By creating a chemical reaction, coagulation destabilizes particles and causes them to clump together. This helps to remove the contaminants from the water.

Disinfection is the process of eliminating or destroying pathogens that cause infection. Disinfection eliminates harmful microorganisms by destroying or inactivating them. The disinfectant is a chemical or physical agent that is used to destroy or inactivate harmful microorganisms.

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Answer:

Air pollution affects the compounds in the air, causing heat to change dramatically over time in the atmosphere.

The number of moles of excess reagent left after the reaction is complete would be  sodium phosphate  and The mass of excess reagent that will remain unreacted is copper (II) nitrate.

The molar amounts of reactants and products that will result from a balanced chemical equation are shown. Rarely are reactants combined in the exact amount required in the actual world. Before the others, one reactant will be entirely depleted. The limiting reactant is the one that is consumed first in a reaction. The residual amount is deemed "in excess" once the other reactants have been partially consumed.

Calculate the volume of the product each reactant produced to identify the limiting reactant. The limiting reactant is the one that yields the smallest amount of product.

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Answer: Vibråtory movement.

Explanation: when particles bounce against each other the friction creates thermal energy. Think about what happens when you rub your hands together and they get warmer, that the friction between your hands making thermal energy.

When two objects descend towards one another, the potential energy related to the gravitational field is released (transformed into kinetic energy).

The potential energy that a huge item has in relation to a different massive object due to gravity is known as gravitational energy and gravitational potential energy. When two objects descend towards one another, the potential energy related to the gravitational field is released (transformed into kinetic energy). Bringing two things farther apart increases the gravitational potential energy.

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Like charges repel each other, while opposite charges attract each other. This principle is one of the fundamental aspects of electrostatics. According to Coulomb's law, the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

As the distance between two charged particles decreases, the force between them increases. This is because the closer the particles are, the stronger the electric field they create, leading to a stronger force of interaction.

On the other hand, as the magnitude of the charges decreases, the force between the particles also decreases. This is because the force is directly proportional to the product of the charges. If one or both of the charges are smaller, the force they exert on each other will be weaker.

In summary, according to Coulomb's law, decreasing the distance between charged particles increases the force between them, while decreasing the magnitude of the charges decreases the force. This understanding of the relationship between charge, distance, and force is crucial in explaining the behavior of charged particles and the interactions between them.

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Answer:

x + y < 50

Explanation:

(i) Make ammonia number of atoms on reactant side is 8 and on product side is 8. (ii) Separate water number of atoms on reactant side is 6 and on product side is 6. (iii) Combust methane number of atoms on reactant side is 9 and number of atoms on product side is 9.  

The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.

(i) Make Ammonia

First we have to write the balanced chemical equation

             N₂ + 3H₂ → 2NH₃

Reactant side              Product side

N = 2                             N = 2

H = 6                             H = 6

So total number of atoms on product and reactant side is 8.

(ii) Separate Water

First we have to write the balanced chemical equation

            2H₂O → 2H₂ + O₂

Reactant side              Product side

H = 4                             H = 4

O = 2                             O = 2

So total number of atoms on product and reactant side is 6.

(iii) Combust methane

First we have to write the balanced chemical equation

       CH₄ + 2O₂ → 2H₂O + CO₂

Reactant side              Product side

C = 1                             C = 1

H = 4                            H = 4

O = 4                            O = 4

So total number of atoms on product and reactant side is 9.

Thus from the above conclusion we can say that For each balanced reaction, the total number of atoms are

Reaction                            Total number of atoms

                                     Reactant side           Product side

Make Ammonia                   8                               8

Separate Water                   6                               6

Combust Methane              9                               9

Disclaimer: The question was given incomplete on the portal. Here is the complete question.

Question: For each balanced reaction, indicate the total number of atoms in the table below.

Reaction                            Total number of atoms

                                     Reactant side           Product side

Make Ammonia            _________              __________

Separate Water            _________              __________

Combust Methane       _________              __________

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A rainbow is produced through a proces that includes refraction, reflection, and dispersion of  sunlight.

A rainbow is formed when sulinght is refracted and reflected by rain drops in the atmospher.

The sunlight is split into its component colors, which is why rainbows appear as having an array of colors. This is due to each color being bent by a different amount during refraction.

The colors of a rainbow are always in the same order, with red on the outside and violet on the inside.

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Answer:

The physical and human forces that work in combination to form and transform the world, for example, erosion, the water cycle, migration or urbanisation. Geographical processes can operate within and between places.

Answer:

Arsenic

Explanation:

From the introduction given in the question, the element we are considering must be a member of group 15 because of its similarity to nitrogen.

We were also told that it exhibits the characteristics of metals and some nonmetals hence the element is a metalloid.

Lastly we were told that it contains 3d but not 4d electrons. This has ruled out  antimony. Our only element standing now is arsenic!

The electronic configuration of arsenic is; [Ar] 3d¹⁰ 4s² 4p³. Hence the correct answer is arsenic.

Answer:

11.9g remains after 48.2 days

Explanation:

All isotope decay follows the equation:

ln [A] = -kt + ln [A]₀

Where [A] is actual amount of the isotope after time t, k is decay constant and [A]₀ the initial amount of the isotope

We can find k from half-life as follows:

k = ln 2 / Half-Life

k = ln2 / 27.7 days

k = 0.025 days⁻¹

t = 48.2 days

[A]  = ?

[A]₀ = 39.7mg

ln [A] = -0.025 days⁻¹*48.2 days + ln [39.7mg]

ln[A] = 2.476

[A] = 11.9g remains after 48.2 days

The compound sodium carbonate is a strong electrolyte because it completely dissociates when placed in water into its component ions. The equation of the reaction can be expressed as:

\(Na_2CO_3_{(s)} ---> 2 Na^+_{(aq)} + CO_3^{(2+)}_{(aq)}\)

The dissociation leads to the formation of sodium and carbonate ions with the latter held together by its internal covalent bond.

This is unlike weak electrolytes that do not dissociate completely in water or aqueous solutions. Only a small fraction of the solute exists as ions in the solution.

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Answer: Na2CO3(s)  2Na+(aq) + CO32-(aq)

Explanation:

the carbonate has a -2 formal charge. not a +2 (as the previous answer stated)