what is a sign in the chemical reaction that the acid/base is stronger than the conjugate acid/conjugate base in a chemical reaction?

translated into 4 million tons of energy multiplied by the square of the speed of light.

The Sun undergoes this reaction throughout, and as a result, 600 million tons if hydrogen are converted in 596 million tons or helium each second.E=mc² states that the 4 million tons that missing matter are transformed into energy.

The sun makes 598 tons of helium and burns 600 million tons of hydrogen each second.The remaining 4 million tons per day are turned into electricity.

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The approximate focal length of an objective lens is 8.42 mm.

The magnification of eye piece (m1)=10

Total magnification (m)=200

using,

m=m1*m2

200=10*m2

m2=20

Thus, magnification of objective lens=20

Using the formula for magnification of objective lens,

m2=1+L/f

20=1+0.16/f

f=0.16/19

=0.00842 m

8.42 mm

Therefore, the focal length is 8.42 mm.

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The frequency of an x-ray wave with an energy of 2×10^(-17) J in hertz is 3.01 × 10^(16) hz.

We can find the value of frequency of an x ray wave by using the relation between energy and frequency.

As we know that,

Energy is directly proportional to the frequency of the wave.

Mathematically,

E = h. f

Where,

E is the energy in joule

f is the frequency of the wave in hertz

h is the planck's constant

Given,

E = 2 × 10^(-17)J

h = 6.63 × 10^(-34) kg.m2/s

By substituting all the values, we get

2 × 10^(-17)J = 6.63 × 10^(-34) kg.m2/s × f

f = 2 × 10^(-17)J / 6.63 × 10^(-34) kg.m2/s

f = 3.01 × 10^(16) hz.

Thus, we concluded that the frequency of an x-ray wave with an energy of 2×10^(-17) J in hertz is 3.01 × 10^(16) hz.

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Formaldehyde has a double bond.

Formaldehyde is a molecule that consists of one carbon atom coma one oxygen atom and two hydrogen atoms.

In this atom carbon and oxygen contains two bonds between them. There is one Bond present between each hydrogen atom and the carbon atom. Generally, the double bonds are shorter than the single bond because a single double s weaken than a single bond.

Because of the presence of the double bond between the carbon and oxygen molecule we can say that formaldehyde as a double bond.

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Only so long as it didn't get too cold for heavier elements to form could helium survive.

Big Bang nucleosynthesis produced incredibly few stable nuclei of elements heavier than lithium because of a bottleneck brought on by the absence of a stable nucleus with 8 or 5 nucleons. Additionally, this lack of larger atoms limited the quantity of lithium-7 that could be produced during BBN.

The early cosmos was too hot before a few minutes into the expansion for atoms to form. Only a few minutes remained before it became too cold to continue nucleosynthesis and prevent the formation of new elements.

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The colors of the visible spectrum are in order from the highest to lowest energy which is : Violet Indigo Blue Green Yellow Orange and Red.

Red light has the lowest energy since it has the longest visible light wavelength. The highest energy visible light is violet since it has the shortest wavelength. The visible light spectrum has energies ranging from red to violet, and the human brain perceives these energy as different hues. Violet has the highest energy whereas red has the lowest. Red light, which has the lowest visible light frequency, has the least energy. The order spectrum reveals frequency content, just like the power spectrum does.

However, the order spectrum offers extra information about harmonically connected rotating machinery systems. Orders are frequency multiples of the reference velocity that are specific.

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The energy of this transition is equal to  4.02 x 10^-19 J.

Calculate the frequency of the light using the equation c = λν, where c is the speed of light (299,792,458 m/s), λ is the wavelength (746.4 nm), and ν is the frequency of the light.

Calculate the energy of the transition using the equation E = hν, where h is Planck's constant (6.626 x 10^-34 J*s) and ν is the frequency of the light.

Calculate the amount of energy caused by the transition by multiplying the energy of the transition by the Avogadro constant (6.022 x 10^23 s^-1).

The amount of energy caused by the transition is 4.02 x 10^-19 J.

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A homogeneous mixture in which a substance is dissolved in a liquid is a solution.

A homogeneous mixture  is the that has the same proportion of the components through out the mixture. a homogeneous mixture has the uniform composition through out the mixture. The liquid is called as the solvent which dissolves the other substances is called as the solute. there are some examples of homogeneous mixtures are :

in the homogeneous mixture we can not distinguish the the components of the mixture. so, a solution is a homogeneous mixture in which a substance is dissolved in a liquid.

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A physical change will occur when boiling water, tea, sugar, and ice are combined to form sweet iced tea.

A physical change is a change affecting the form of a chemical substance, but not its chemical composition.

The characteristics of some physical changes are as follows:

According to this question, one makes a glass of refreshing sweet iced tea by combining boiling water, tea, sugar, and ice on a hot summer day. The resulting solution is an example of a mixture, which contains constituents that retain their individual identity.

This suggests that the change is a physical change because there is no formation of a new substance.

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Phenol-formaldehyde is a thermoset polymer. Thermoset polymers can not be heated up and reused. Therefore it is not possible.

What is Polymer?

​The Greek word for "polymer" is "many pieces." Everywhere we look, we encounter polymers. From the strand of human DNA, a biopolymer that naturally occurs, to polypropylene, a material that is used all over the world.

Natural polymers are those found in plants and animals; synthetic polymers are those manufactured by humans (synthetic polymers). Due to their many distinctive physical and chemical characteristics, several polymers are used in daily life.

All polymers are produced by the process of polymerization, in which their component parts, known as monomers, combine with one another to form polymer chains, or 3-dimensional networks that form the links in polymers.

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1-butyne is the product that is formed by the reaction of bromoethane and the following nucleophile sodium acetylide.

Definition of nucleophilic substitution reaction

Nucleophilic substitution reactions are a class of reactions in which an electron rich nucleophile attacks a positively charged electrophile and replaces a leaving group. For alginate reactions, the most reactive nucleophile is considered as the C6 carboxylate group.

1-butyne is the product formed from the reaction between bromoethane and sodium acetylide. This reaction is a nucleophilic substitution type reaction where acetylide ion act as nucleophile. General reaction is given below:

C₂HNa + C₂H₅Br → CH₃CCHCH₂ + NaBr

1-butyne is the product formed in this reaction.

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A chemical bond can be interaction between atoms or ions that enables the formation of molecules and crystals.

A chemical bond can be formed by exchange of electrons, sharing of electrons.

When an atom lose or gain the electron to attain the stability it forms ions and the attractive forces between two oppositely charged ions is known as ionic attractions or electrometric attractive forces.

and such formed bonds are known as ionic bonds.

An ionic bond is formed when the difference between the electronegativities of two atoms is high as an electron transfer to occur to form the ions.

A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms.

A covalent bond is formed when the electronegativity difference of two atoms is too small for an electron transfer to occur to form ions.

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The direction of Conduction happens via hotter to colder When materials come into contact, their debris collide.

The strength from the quicker-shifting substance is transferred to the slower-shifting substance till they're shifting on the equal speed. Boiling water on a range is an instance of thermal strength. Thermal strength is produced while the atoms and molecules in a substance vibrate quicker because of a upward thrust in temperature.

Thermal energy actions from warmer frame to chillier frame so we realize that during this test water is a warmer frame while ice cubes are chillier frame so the warmth strength will truely actions from warm frame to the frame.

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It is true that pressure has little or no impact on the solubility of liquids and solids because they are incompressible.

Pressure is the amount of force applied perpendicularly to an object's surface divided by the surface area across which it is applied. According to Henry's Law, a gas's solubility in a liquid is directly correlated with its pressure above the solution's surface. So the solubility of gas increases with an increase in pressure. The solubility of a solid in a liquid solution is unaffected by pressure changes. This is because liquids barely compress while solids cannot be compressed at all. As a result, pressure has no impact on both.

Therefore, the given statement is true.

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A chemical bond can be formed by exchange of electrons, sharing of electrons.

There are so many types of chemical bonds but majorly three types of chemical bonds are:

Ionic Bond,

Covalent Bond,

and Metallic Bonds.

And out of these three types of bonds, Ionic Bonds are the strongest bonds.

The order from strongest to weakest bond is given as :

Ionic Bond > Covalent Bond > Metallic Bond

Ionic Bond: When an atom lose or gain the electron to attain the stability it forms ions and the attractive forces between two oppositely charged ions is known as ionic attractions or electrostatic attractive forces.

and such formed bonds are known as ionic bonds.

An ionic bond is formed when the difference between the electronegativities of two atoms is high as an electron transfer to occur to form the ions.

Covalent Bond: A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms.

A covalent bond is formed when the electronegativity difference of two atoms is too small for an electron transfer to occur to form ions.

Metallic Bonds: Metallic bonds are made up of electrostatic attraction between metal cations and the delocalized electrons. Metallic bond is  collective sharing of valence electrons between several positively charged metal ions.

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The atom bearing the number 1 has an sp3 hybridization. The hybridization is sp3 because there are four groups surrounding this atom, along with two lone pairs of electrons and two bonds.

Only the quantity of lone pairs and sigma bonds around an atom are taken into account for determining its hybridization.

The term "hybridization" means what?

When two atomic orbitals join to form a hybrid orbital in a molecule, the energy of the separate atomic orbitals is redistributed to give orbitals of equivalent energy.

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Mass of CaCl2 is  11g .

What is Molar Mass?

We all wish to know how many molecules are there in a given material. Atoms and molecules are very small in both size and mass. One sample mole's weight is the molar mass. To get the molar mass, connect the atomic masses (atomic weights) of each atom in the molecule. Using the mass listed in the Periodic Table or Atomic Weight Table, determine the atomic mass for each element.

Typically, molar mass is stated in either grammes (g) or kilogrammes (kg) (kg).

(100mL) (1L)/1000mL = 0.1 L is the volume of solution in litters.

CaCl2 has a molarity of 1 mole/L and a molar mass of 110 g/mole.

CaCl2 solute mass equals

M = mol of solute per litre of solution; mol of solute equals mol mass of solute divided by molar mass

Mass of the solute is equal to M x L of solution x its molar mass.

CaCl2 mass equals 1 mole/L, 0.1 L, and 110 g/mole, or 11 g CaCl2.

The mass of CaCl2 is equal to 11g CaCl2.

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The element that has the same number of energy levels as Krypton (Kr) and the same number of valence electrons as Nitrogen (n) is Arsenic (As).

Electrons аre sub-аtomic pаrticles thаt аre present in the аtom аnd cаrry а negаtive chаrge. The electrons were discovered by J.J. Thompson. The electrons revolve аround the nucleus in vаrious shells аnd аid in the formаtion of bonds.

Vаlence electrons аre the totаl number of electrons thаt аn аtom cаn shаre to form bonds. Nitrogen is the element thаt hаs the sаme number of vаlence electrons аs Arsenic with both of them hаving 5 vаlence electrons.

Krypton is а noble gаs locаted in group VIII А аnd 4rd period. Nitrogen is in the 5fh group. So, we must look for аn element locаted in the 4rd period аnd group VА on the periodic table.

Your question is incomplete, but most probably your full options were

a. selenium (Se)

b. arsenic (As)

c. iron (Fe)

d. calcium (Ca)

Thus, the correct answer is B.

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NH4+ + H2O results in NH3 + H3O+

Ka = (NH3)(H3O+)/(NH4+)

pKa = 9.2

Since the ion in NH4Cl, NH+4, has a pKa of roughly 9.2, we can proceed to compute the pH as follows:

pH is 9.26 plus log(0.39 M0.73 M) = 8.99, while pOH is 4.74 plus log(0.73 M0.39 M) = 5.01.

pH=14−pOH. =14−5.01≈8.99.

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While attempting to determine the structure of a compound using elemental analysis and functional group tests you are generally able to recover your original sample as False.

Neutron activation analysis is a commonly used non-destructive analytical method for determining the identity and concentration of elements in a wide variety of materials. The Sodium Test or La Seigne Test is used in elemental analysis to qualitatively determine the presence of foreign elements such as halogens nitrogen sulfur and phosphorus in organic compounds.

Elemental and chemical state compositions are best determined using low information-depth quantitative techniques such as X-ray photoelectron spectroscopy. The most important spectroscopic techniques for structure elucidation are ultraviolet and visible spectroscopy infrared spectroscopy and nuclear magnetic resonance spectroscopy.

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Cathode reaction: [tex]Cu^{2+} + (aq) + 2e-- > Cu (s).\\[/tex]

Anode reaction: [tex]Cu(s) -- > Cu^{2}+ (aq) + 2e[/tex] is

What is half-reaction?

A redox reaction's oxidation or reduction reaction component is known as a half reaction (or half-cell reaction). By taking into account the change in oxidation states of specific chemicals participating in the redox reaction, a half reaction is produced.

Here Zn pennies act as cathode , reduction of [tex]Cu^{2+}[/tex] to Cu take place here.

Cu rod acts as anode,here dissolution of Cu (s) to [tex]Cu^{2+}[/tex] take place .

Half cell reactions

Cathode reaction: [tex]Cu^{2+} + (aq) + 2e-- > Cu (s).\\[/tex]

Anode reaction: [tex]Cu(s) -- > Cu^{2}+ (aq) + 2e[/tex]

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The organic compounds from most soluble in water to least soluble in water is CH3CH2OH, CH3CH3 and CH3OCH3.

The degree to which a substance dissolves in a solvent to form a solution is known as solubility ( expressed as grams of solute per liter of solvent). One fluid's ability to completely dissolve another fluid (liquid or gas; for example, methanol and water) or only partially do so (oil and water dissolve only slightly). "Like dissolves like," in general ( aromatic hydrocarbons dissolve in each other but not in water). According to the distribution coefficient (the ratio of a material's solubilities in two solvents), some separation techniques (such as absorption and extraction) rely on differences in solubility. In general, as temperature rises, so do the solubilities of solids in liquids, while they fall as temperature rises and rise with pressure for gases. A solution is said to be saturated when no more solute can dissolve in it at a specific temperature and pressure.

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In a schematic illustration of a compound called a Lewis structure, the atoms and their associated electrons are shown. 

As a result, each fluorine and oxygen atom contains three lone electron pairs and six non-bonding electrons.

The equatorial plane The two F atoms would occupy the axial places in accordance with Bent's Rule, and the other two F atoms, along with the oxygen atom, would occupy the equatorial positions. This would result in a triangular bipyramidal structure.

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The correct statements are statement 1 (Gases occupy the entire volume of the container), statement 3 (The particles in a solid occupy fixed positions), statement 4 (Liquids take the shape of a container), and statement 6 (The particles in a gas move quite freely).

The term "matter" refers to anything that occupies space and has mass. There are three different states of matter: solid, liquid, and gas.

Solids have distinct volumes and shapes. They are not compressible and are densely populated. The particles of a solid are attracted to one another with a powerful force. The distance between solids' particles is minuscule. The particles in a solid are in a fixed location.

A liquid cannot be compressed because it has a fixed volume. They don't have a fixed shape; instead, they take on the shape of the vessel they are placed in.

Gases are compressible.  To fill their vessels, gases enlarge. They take up a lot more space than the liquids or solids they originate from.

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Answer:

it pulls

Explanation:

it pulls because of the magnetic force

Answer: It is pulled

Explanation:

Deeming that the force of motion is attraction, the only way it could be moving would be in pull of the magnet.

Mass of hydrogen present in a 200.0 mg sample of water is 22.2g.

The molar weight of water is 18.015 g/mol, and hydrogen has a weight of 1 g/mol.

So mass of hydrogen= (2/18.015)(200)=22.2 grams.

What is hydrogen?

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