is present when a person experiences less effect from the same dose of a substance and needs more and more of it to achieve intoxication. (ap10.2)

According to scrum, a feature is a component of a product that offers or provides a customer some practical functionality.

The features in Agile approaches stand for a section of functionality that provides significant business value and meets a stakeholder requirement. User stories are the building blocks of features. "A feature is a service that meets the needs of a stakeholder. A benefit hypothesis and acceptability criteria are included for each feature. The Product Manager is in charge of the Features in the Scaled Agile Framework.

Although she doesn't necessarily compose them, she has the last say about the feature's priorities and content. Some businesses describe the person who is in charge of defining and ensuring that the feature is executed as intended using the role of feature owner rather than that of product manager.

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1.2x10*M solution of HI O will cause the greatest pH change in the blood. In chemistry, pH, historically denoting "potential of hydrogen", is a scale used to specify the acidity or basicity of an aqueous solution.

What is pH?

In chemistry, pH, which historically stands for "hydrogen potential," is a measure used to indicate the acidity or basicity of an aqueous solution. Acidic solutions measured lower pH values ​​than either basic or alkaline solutions.

Therefore, 1.2x10*M solution of HI O will cause the greatest pH change in the blood. In chemistry, pH, historically denoting "potential of hydrogen", is a scale used to specify the acidity or basicity of an aqueous solution.

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9-fluorenone is created when 9-fluorenol reacts with acetic acid and sodium hypochlorite solution.

Chlorine gas is potentially fatal when sodium hypochlorite is combined with acetic acid or any other kind of acid. More than 6,300 exposures to chlorine gas were documented in 2016 according to the American Association of Poison Control Centers. Mixing common household cleaners was the cause of about 35% of these exposures.

When sodium hypochlorite and any acid, even acetic acid, are mixed, chlorine gas can be lethal. The American Association of Poison Control Centers reports that there were more than 6,300 chlorine gas exposures recorded in 2016. 35% of these exposures were brought on by mixing regular household cleansers.

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Subatomic particles generally include electrons, protons and neutrons.

A Subatomic particle is nothing but a particle which is smaller than an atom in size. Typically, an atom that can be broken down into three subatomic particles, namely: protons, electrons, and neutrons.

Subatomic particles include electrons, the negatively charged, almost massless particles that nevertheless account for most of the size of the atom, and they include the heavier building blocks of the small but very dense nucleus of the atom, the positively charged protons and the electrically neutral neutrons.

These are particles that are even smaller than a single atom, and are thus called Subatomic Particles. Atoms, as you may know, are made up of a nucleus surrounded by orbiting electrons.

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HCN : In HCN molecule C−atom is sp−hybridised orbital. One of the sp hybrid orbital overlap with the 1s orbital of H−atom, while the other mixes with one of the 3 atomic p−orbitals of N−atom.

H−C≡N:  It is a linear molecule.

What is Hybridization?

The concept of hybridization is described because the procedure of combining two atomic orbitals to create a new form of hybridized orbitals. This intermixing generally effects in the formation of hybrid orbitals with absolutely special energies, shapes, and so forth. Hybridization is primarily achieved by using atomic orbitals of the identical electricity stage. However, both completely crammed and 1/2-crammed orbitals can participate on this procedure if their energies are identical. The idea of hybridization is an extension of valence bond concept that helps us recognize bond formation, bond energies, and bond lengths.

In SiCl4 = hybridization of Si is sp3 (because it contains 4 bond pairs and tetrahedral shape)

In SO3 = hybridization is sp2  (because it  contains 3 bond pairs and trigonal planar shape)

In TeCl2 = hybridization is sp3 ( because it contains 2 bond pairs and 2 lone pairs and angular shape)

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a)Fe serves as the cathode while Zn serves as the anode. b)Ag is the cathode, and Sn is the anode. c) Zn is the anode and Cu is the cathode.

d) Al is the cathode and Sn is the anode.

An electrical device with polarisation has an electrode called an anode through which regular current flows. The cathode, an electrode of the device through which regular current exits the device, is in contrast to this. For "anode current into the device," the acronym ACID is frequently used. Since electrons move in the opposite direction to conventional current, which is the flow of positive charges in a circuit, (negatively charged) electrons flow out of a galvanic cell's anode and into an external circuit that is linked to the cell. For instance, the anode is located at the end of a household battery that is marked with a "-" (minus).

In both galvanic and electrolytic cells, the oxidation reaction takes place at the anode electrode.

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The response is 1. A single element will always contain the same number of protons. The number of neutrons can fluctuate, though. While the number of protons in an element's isotopes can vary, the number of neutrons does not.

Isotopes are members of an element's family who share the same number of protons but have unique neutron counts. The atomic number of an element on the Periodic Table is determined by the number of protons in its nucleus.

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Which of the following would you anticipate to be a molecule as well as which would i expect to be a constituent of an ionic solid  Molecular: CO, NO, HF, and ionic: NaF, CaO, NaCl, RbF, and SrS

These crystal lattices create links between themselves that are far stronger than the velocity of the ions at standard room temperatures. The ions cannot separate as a result. As a result, ionic chemicals produce solids with extremely solid, unbreakable connections.

Ionic solids—Constructed of negative and positive ions and bound by electrostatic forces. They have poor conductivity in the solid state and very high melting temperatures and brittleness. Table salt, NaCl, is a type of ionic solid.

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Each solid has a unique solubility curve. This is due to the fact that each solid has a specific temperature at which it becomes soluble.

The solubility curve shows how a substance's solubility changes as a function of temperature. The curving line on the graph that depicts the relationship between temperature and a substance's solubility at various temperatures is called the solubility curve.

The lines on the solubility curve represent a saturated solution, or one in which all of the solute's dissolved volume has been dissolved in 100 g of water.

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The polarizability of an atom increases as the increases :

principal quantum number of the valence electron shell

Polarizability can be defined as the ease to with which the electron cloud of the atom is distorted. id the principle quantum number of the valence shell electron increase that means when we move down the group in a periodic table than the valence electrons are loosely bonded to the nucleus and the ionization energy decreases and the polarizability will be increases.

Thus the principal quantum number of the valence electron shell increase will lead to the increase in the polarizability of an atom.

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In regions of the electromagnetic spectrum where chlorophylls a and b are unable to absorb light, the plant can absorb light thanks to carotenoids and other auxiliary pigments.

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Highly potent acid HNO₃ is. The oxidizing agent also uses it. CaF₂, NiS, Ag₃PO₄, AgCl, and BaSO₄ are the insoluble salts in this example.CaF₂, NiS, Ag₃PO₄ are dissolved, and  AgCl and BaSO₄ not dissolved in HNO₃.

An oxidizing agent is a material in a redox chemical process that obtains or "accepts"/"receives" an electron from a reducing agent (also known as an oxidant, oxidizer, electron recipient, or electron acceptor) (called the reductant, reducer, or electron donor). Or to put it another way, an oxidizer is anything that oxidizes something else. This is described by saying that oxidizers "undergo reduction" and "are reduced" whereas reducers "undergo oxidation" and "are oxidized." The oxidation state, which characterizes the degree of electron loss, of the oxidizer falls while that of the reductant increases. The three most common oxidizing substances are oxygen, hydrogen peroxide, and halogens.

An oxidizing agent is a chemical species that goes through a chemical reaction in which it obtains one or more electrons, to put it simply.

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The amount of heat energy does not remain constant during a phase change.

A phase change is the conversion of matter from one state to another. When a big amount of energy is gained or lost, this process takes place. Pressure and temperature are other elements that influence phase change.

There are eight thermal mechanisms that might cause matter to change phase. Melting, freezing, evaporation, condensation, sublimation, deposition, ionization, and recombination are the processes involved. These eight phases exist at varying temperatures and pressures.

Latent heat refers to the energy involved with these changes.

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Here is the complete explanation about labeling guidelines.

Signal words are found on the  pesticide product labels.

Of to the end, and they describe the acute to  (short-term) toxicity of to by  formulated pesticide of the  product.

The signal word can become either: DANGER and be the  WARNING . Products with to the DANGER signal word are the   most toxic. Products of  with the signal word in the  WARNING are lower in the  toxicity.

So the correct is danger of  because it's indicated by  flammable and high toxic.

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The electrons are involved in the oxidation-reduction reaction of zinc metal with hydrochloric acidThere are two electron Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g).

Calculation:

The net reaction is

Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g).

The Cl⁻ ions are spectators - they do not change.

This experiment includes the reaction of zinc with hydrochloric acid. The test compares the reactivity of 3 metals magnesium zinc and copper. The video consists of a dialogue of writing balanced equations for all of the discovered reactions.

Hydrochloric acid, also known as hydrochloric acid, is an aqueous solution of hydrogen chloride. it's far a drab solution with a function smelly odor. it's miles categorised as a sturdy acid. It is a component of gastric acid inside the digestive gadget of maximum animal species, which includes human beings. when hydrochloric acid comes into contact with pores and skin and other tissues it is able to reason excessive burns.

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C2H4 is CH2=CH2, it has one double bond meaning it has pi electrons.

It is electron rich . Therefore it's miles lewis base.Ethylene, or ethene, is an unsaturated hydrocarbon. It is a drab gas. Its chemical formulation is C2H4 wherein there may be a double bond among the carbons. It is extraordinarily flammable and it has planar structure.

Some molecules aren't capable of fulfill the octet rule via way of means of making handiest unmarried covalent bonds among the atoms. Con- sider the compound ethene, which has a molecular formulation of C2H4.

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Chemical sedimentary rocks are named mostly based on chemistry, whereas clastic sedimentary rocks are named primarily based on particle size.

By sorting, grain size, and shape, clastic rocks are categorised. Chemical sedimentary rocks form when dissolved minerals are dissolved in water. Chemical rocks are categorised mostly based on the minerals that make up the rock.Clastic sedimentary rocks are composed of rock fragments (clasts) from earlier strata. Rock fragments that have become loose due to weathering are then transferred to a basin or depression where silt is confined. When sediment is deeply buried, becomes crushed, and becomes cemented, sedimentary rock is produced. Clastic sedimentary rocks are classified into various groups based on the size of the sedimentary grains and the sorts of rock pieces that make up the sediment.

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Hydrogen, Nitrogen, and Oxygen are nonpolar diatomic molecules that are found in nature. Answer is right ( D).

Nitrogen, carbon dioxide, methane, oxygen, ozone, and nitrogen are a few examples of non-polar compounds. Examples for homonuclear nonpolar compounds include ozone, oxygen, and nitrogen (O 3 ). Other nonpolar compounds include alkynes, which are water insoluble.

Any diatomic molecule with the same element represented by both atoms must be a molecular compound. A polar molecule is a diatomic compound, such as HF, that contains a polar covalent link.

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Here in the given reaction the limitng reactant is oxygen (O2) and therefore the correct option is option B.

We need 5 mole O2 for 2 mole C2H2

For 1 mole of C2H2 we will need 5/2 that is 2.5 mole O2

But we have only 1 mole O2

Hence O2 is limiting reactant.

A limiting reactant is usually the one whose minimum concentration results in  stopping of the reaction any further.

Determine the balanced form of the chemical equation for the chemical reaction.
The balanced form of the chemical equation is already given.

2C2H2(g) + 5O2(g) ----> 4CO2(g) + 2H2O(l)

Convert all given information into moles (most likely, through the use of molar mass as a conversion factor).

25g×1mol / 180.06g=0.1388

40g×1mol / 32g= 1.25 molO2

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A positive charge is a property that best describes a proton. A proton is made up of three smaller particles called quarks.

Characteristics of a proton :

1. A proton is located inside the nucleus sometimes bounded together by nuclear forces along with neutrons.

2. A proton carries a charge of 1.6 x 10^-19 Coulomb. One Coulomb constitutes approximately 6.241 x 10^18 protons.

3. A proton has a mass of 1.67262 x 10^-27 kg or approximately 1 a.m.u It is almost equal to that of a hydrogen atom as its nucleus only consists of one proton and the rest of the atom constitutes one electron whose mass is nearly negligible.

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Answer:

Explanation:Hydrochloric acid (HCl) in the stomach is a much stronger acid than ethanoic acid (also known as acetic acid) found in citrus fruits. The strength of an acid is determined by its ability to donate protons (H+ ions) to a solution, and the concentration of H+ ions in a solution determines its pH. A solution with a higher concentration of H+ ions will have a lower pH, while a solution with a lower concentration of H+ ions will have a higher pH.

When hydrochloric acid is dissolved in water, it ionizes to form hydronium ions (H3O+) and chloride ions (Cl-). This process can be represented by the following ionic equation:

HCl + H2O → H3O+ + Cl-

The hydronium ions that are formed in this reaction are responsible for the acidity of the solution. The concentration of hydronium ions in a solution of hydrochloric acid is much higher than the concentration of H+ ions in a solution of ethanoic acid, which means that hydrochloric acid has a much lower pH compared to ethanoic acid.

The ionization of ethanoic acid in water is a similar process, but it results in the formation of fewer H+ ions compared to hydrochloric acid. This is because ethanoic acid is a weaker acid than hydrochloric acid, and it donates fewer protons to the solution. The ionic equation for the ionization of ethanoic acid in water is as follows:

CH3COOH + H2O → CH3COO- + H3O+

As you can see, the ionization of ethanoic acid results in the formation of one H3O+ ion for every molecule of acid that ionizes. In comparison, the ionization of hydrochloric acid results in the formation of one H3O+ ion for every molecule of acid that ionizes, plus an additional H+ ion. This means that the concentration of H+ ions in a solution of hydrochloric acid is much higher than the concentration of H+ ions in a solution of ethanoic acid, which leads to a much lower pH for hydrochloric acid compared to ethanoic acid.

I hope this helps to explain the difference in pH between hydrochloric acid and ethanoic acid. Let me know if you have any other questions.

Answer: 57.8g

Explanation:

We can find molar mass by adding up the masses of each component, nitrogen is 14 and hydrogen is 1, this gives us 17g/mol.

Multiplying molar mass by number of moles will give us the grams in that many moles, 3.4x17=57.8g.

The one which Is not an electrophile in electrophilic aromatic substitution is the NH₃.

The electrophile are the species which are the electron deficient . this means that they are attracted to the one which is electron rich species. The electrophile will accepted the electron by the electron rich species and form the bond with the nucleophile. From the given option  the which Is not an electrophile in electrophilic aromatic substitution is the NH₃. as it contains the lone pair of electrons.  the nitrogen is more electronegative than the hydrogen. the nitrogen will get the partial negative charge.

Thus, the NH₃ act as a nucleophile and not a electrophile.

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According to the molar concentration, the molarity of an aqueous solution  is 0.146 M.

Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.

The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.

In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.

Substituting values in above formula, molarity=3.65×10[tex]^-2[/tex]/0.250=0.146 M.

Thus, the molarity of an aqueous solution is 0.146 M.

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Asphalt is a mixture of high molecular weight hydrocarbons, yes octane is the best solvent to remove the asphalt.

A) Yes, octane is the best solvent to remove the asphalt.

B) Octane is an organic solvent that is non-polar in nature. Asphalt is a complex mixture of hydrocarbons with a high molecular weight. In its natural state, this mixture is also non-polar in nature.  As per the general law, like dissolves like. This shows that polar substances are able to dissolve in polar solvents, whereas non-polar substances are able to dissolve in non-polar solvents.

Octane, which is a non-polar solvent, has the ability to dissolve asphalt, which is also a non-polar mixture.  Because of this, octane is the most effective solvent for removing asphalt.

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In an ionic bond, the atoms are bound together by the electrostatic forces in the attraction between ions of opposite charge.

How sodium chloride is formed?

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The other property likely to be possessed by the element would be extremely low electronegativity. Option one.

What are inert gases?

Inert gases are otherwise known as noble gases. They are one of the seven elements found in group 8A (or group 18) of the periodic table. They include  helium, neon, argon, krypton, xenon, and radon and possess the following attributes:

The unknown substance tested by the student is odorless and colorless. It also has 8 valence electrons. Having 8 valence electrons means that the element is in an octet state. In other words, the element belongs to the noble gas group.

Being a noble gas element, the other property the element is most likely to have is extremely low electronegativity.

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Calorimeter is an experimental set-up that is used to measure the heat of a chemical reaction or physical change and determine the specific heat capacity of a substance.

Calorimeters are used to measure volume and heat produced during a certain time interval. The flow is passed through a tank partly filled with water whose thermal capacity and weight are known before the experiment.

A calorimeter is an object used for calorimetry and is the process of measuring heat of chemical reactions and heat capacity. Some common types of calorimeter are:  differential scanning calorimeters, isothermal micro calorimeters and titration calorimeters.

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Answer: There are 1.51×1023molecules O2 in 10.0 g O2 .

6.022e+24

Explanation: If you are trying to convert moles into molecules than you want to multiply the amount of moles (in this case 10) by Avogadro's number (6.022x10^23) and you get the number of particles/atoms/molecules. If you are trying to get the amount of moles from particles/atoms/molecules than you divide the number of molecules by Avogadro's number and get the amount of moles.

If you want to go from mass to mol

then divide by molar mass

If you want to go from mol to mass

then multiply by molar mass

Concentration of the water. The standard state for a liquid is the pure liquid, so the standard state of water is pure water, whose concentration is 55.5 M (in a liter, there are 55.5 moles of water, so its concentration is 55.5 mol/L). In dilute aqueous solutions, the concentration of water is very close to 55.5 M.

Solute :- A substance that is dissolved in a solution.In fluid solutions, the amount of solvent present is greater than the amount of solute.

Colligative Properties:- They are  properties of solutions that depend on the number of particles in a volume of solvent (the concentration) and not on the mass or identity of the solute particles.When a solute is added to a solvent to make a solution, the dissolved particles displace some of the solvent in the liquid phase.

The four colligative properties that can be exhibited by a solution are:

Boiling point elevation.

Freezing point depression.

Relative lowering of vapour pressure.

Osmotic pressure.

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