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The VALENCY of chlorine is 1 because valency of an element is either EQUAL to the number of valence electrons in its atom or equal to the number of electrons required to COMPLETE 8 electrons in the valence shell.

10Explanation:Since number of electrons in Oxygen = 8AND, OXIDE ION has a charge of -2that means it gains 2 more electrons, so it has 10 electrons

Buffer action: the ability of the buffer solution to resist the changes in pH value on the addition of small AMOUNT of an acid or a BASE is known as buffer action. ... These ADDITIONAL H+ ions would combine with the LARGE reserve of CH3COO– ions to form undissociated acetic acid MOLECULES.

The combination of two LITHIUM ATOMS to FORM a lithium molecule, Li2, is analogous to the formation of H2, but the atomic ORBITALS involved are the valence 2s orbitals. Each of the two lithium atoms has one valence electron.

Sodium Chloride is an ionic solid and has high melting and boiling points. So it can not change in vapour phase simply at atmospheric pressure hence it cannot sublime.Ammonium chloride, DRY ICE and iodine undergo sublimation which on heating without COMING in the liquid state DIRECTLY convert in a gaseous state.Hence, the correct answer is OPTION C.Explanation:

all ELECTRON withdrawing GROUPS are electronegative and have -I effect. Electron donating groups are electro positive and have +I effectExplanation:eg of -I NO2 etceg of +I CH3, C2H5 etc

जीव गर्म जल की तुलना ठंडे जल में अधिक सहज महसूस करते हैं क्योंकि ठंडे जल में ऑक्सीजन की मात्रा अधिक होती है जबकि गर्म पानी में कम होती है । गर्म जलीय ताप से ऑक्सीजन की मात्रा कम हो जाती है ।वायुमंडल में ऑक्सीजन वायुमंडल में होती है मात्रा के बारे में 21% की मात्रा (द्रव्यमान द्वारा 23%)। यह प्रतिशत प्रकाश संश्लेषण की अत्यधिक जटिल प्रक्रिया के संचालन से स्थिर रहता है। यह सभी जीवित पदार्थों में एक आवश्यक घटक है और बहुत महत्व श्वसन और दहन है। यह सबसे प्रचुर तत्व है और पृथ्वी की पपड़ी के लगभग आधे हिस्से का निर्माण करता है। यह लगभग सभी चट्टानों का एक बड़ा हिस्सा बनाता है और पानी में वजन के अनुसार 89% तक मौजूद होता है।

-• Mole FRACTION of HCl = 0.17• Mole fraction of H₂O = 0.83Explanation:-In this solution, HCl [Hydrochloric acid] is SOLUTE and H₂O [WATER] is solvent.Let the total mass of the solution be 100g.Then, mass of HCl is 30g, and mass of H₂O :-= 100-30= 70gMolar mass of HCl :-= 1+35.5= 36.5g/molMolar mass of H₂O :-= 1×2+16= 18g/molNumber of moles in 30g HCl :-= GIVEN Mass/Molar mass= 30/36.5= 0.82 moleNumber of moles in 70g H₂O :-= Given Mass/Molar mass= 70/18= 3.89 moleMole fraction of solute [HCl] :-= Mole of solute/Total mole in solution= 0.82/[0.82+3.89]= 0.82/4.71= 0.17Mole fraction of solvent [H₂O] :-= Mole of solvent/Total mole in solution= 3.89/[0.82+3.89]= 3.89/4.71= 0.83 Explanation:ᴛʜᴇ ᴀɴsᴡᴇʀ ɪs ɪɴ sᴀᴍᴇ ᴡᴀʏ ᴅᴏ ɪᴛ

promotersPromoter, in chemistry, substance added to a solid catalyst to improve its performance in a chemical reaction. By itself the promoter has little or no catalytic effect. Some promoters interact with active COMPONENTS of catalysts and thereby alter their chemical effect on the catalyzed substance. The interaction may cause changes in the electronic or crystal structures of the active solid component. Commonly used promoters are metallic ions incorporated into metals and metallic oxide catalysts, reducing and oxidizing gases or liquids, and acids and bases added during the reaction or to the catalysts before being used.inhibitorsAn enzyme inhibitor is a molecule that binds to an enzyme and decreases its ACTIVITY. By binding to enzymes' active sites, inhibitors reduce the compatibility of substrate and enzyme and this leads to the inhibition of Enzyme-Substrate COMPLEXES' formation, preventing the catalysis of reactions and decreasing (at times to ZERO) the amount of product produced by a reaction. It can be said that as the CONCENTRATION of enzyme inhibitors increases, the rate of enzyme activity decreases, and thus, the amount of product produced is inversely proportional to the concentration of inhibitor molecules.

Now, laboratory-grade glassware is MOSTLY Borosilicate GLASS (silicon dioxie and boron trioxide). Both of these chemicals are very, very CHEMICALLY INERT. They tend to be quite "content" with their bond configurations, so they generally to not react (to any APPRECIABLE level) with acids.

Physical PropertiesNon-metals are BRITTLE and break into pieces when beaten. Example: Sulphur and phosphorus. Non-metals are not ductile so, they cannot be made into THIN wires. Non-metals are INSULATORS or poor conductors of electricity and HEAT because they do not lose ELECTRONS to transmit the energy.

A total of FOUR quantum numbers are used to DESCRIBE COMPLETELY the movement and trajectories of each electron within an atom. The combination of all quantum numbers of all electrons in an atom is DESCRIBED by a wave function that complies with the Schrödinger equation.Explanation:please mark me BRAINLIEST if it is helpful

tion:The SET of numbers USED to describe the position and energy of the electron in an ATOM are called QUANTUM numbers.

tion:Here, salicylic acid is subjected to acetylation with the help of acetic anhydride to YIELD acetylsalicylic acid (commonly known as ASPIRIN) and acetic acid as the final PRODUCT. It can be noted that acetic anhydride is also USED as an acetylating AGENT in the synthesis of THC acetate ester and diacetylmorphine.

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tion:This is the case for the large and very important class of proteins CALLED enzymes. Enzymes can be grouped into functional classes that perform similar chemical reactions.Each type of enzyme WITHIN such a class is highly specific, catalyzing only a SINGLE type of reaction.

gcdfhfgigigihihohiExplanation:hfhfjgzcf;;;;, the?vvhg க்;; கி, TG;; GET the;H

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rease in weight of CATHODE of a COPPER voltameter was found to be 1.053g. the same amount of current when passed through copper sulphate solution it was observed that the initial and final WEIGHTS of copper in the anode SOLUTIONS was 0.79 and 0.91 g respectively.calculate the transport no of Cu+2 and SO4-2 will be Wplease MARK me as brainliest.....

In organic chemistry, a homologous series is a SEQUENCE of COMPOUNDS with the same FUNCTIONAL group and similar chemical properties in which the members of the series can be BRANCHED or UNBRANCHED, or differ by -CH2.

ts MAY be classified generally according to their physical STATE, their chemical nature, or the nature of the reactions that they CATALYZE. Catalysts may be GASES, liquids, or solids. In homogeneous catalysis, the CATALYST is molecularly dispersed in the same phase (usually gaseous or liquid) as the reactants.

aniline, the nitrogen atom DONATES its LONE pair to the acid and by forming a salt (ionic compound), it dissolves in water(aqueous HCL). ... That's why ACETANILIDE is not SOLUBLE in aqueous HCl

Answer 1 Solubility productApplying the law of mass action, Since the solution is saturated, the concentration of unionised molecules of the electrolyte is constant at a particular temperature, i.e., constant. is termed as the solubility product.Answer 2 C partAnswer 3 DecreasesAnswer 4 c) Generates ions on passing electric currentAnswer 5 Le Chatelier's principle is applicable to all systems, chemical or physical, in equilibrium. According to the principal, when a system at equilibrium is disturbed the position of the equilibrium shifts in a direction so that the effect of the change is nullified.Answer 6 Chemical equilibrium of reversible reaction is not influenced by the catalyst. Catalyst decreases the activation barrier for a reaction so the reaction proceeds fast. In the presence of the catalyst, the equilibrium reaches faster but it doesn't affect the thermodynamic properties so answer is temperatureAnswer 7 D option is CORRECTANSWER 8 The common ion effect describes the effect on equilibrium that occurs when a common ion (an ion that is already contained in the solution) is added to a solution. The common ion effect generally decreases solubility of a solute.Answer 9 a option is correctAnswer 10 General statement of Le Chatelier's principleIt states that changes in the temperature, pressure, volume, or concentration of a system will result in PREDICTABLE and opposing changes in the system in order to achieve a new equilibrium state.Answer 11. ExothermicAnswer 12. TOWARD the middle.Answer 13. In a chemical reaction, chemical equilibrium is the state in which the FORWARD reaction rate and the reverse reaction rate are equal. The result of this equilibrium is that the concentrations of the reactants and the products do not changeAnswer 14 A reaction is at equilibrium when the amounts of reactants or products no longer change. Chemical equilibrium is a dynamic process, meaning the rate of formation of products by the forward reaction is equal to the rate at which the products re-form reactants by the reverse reaction.Answer 15 temperatureAnswer 16 solutionsAnswer 17 All reactions tend towards a state of chemical equilibrium, the point at which both the forward process and the reverse process are taking place at the same rate. Since the forward and reverse rates are equal, the concentrations of the reactants and products are constant at equilibrium.Answer 18 In a chemical reaction, chemical equilibrium is the state in which the forward reaction rate and the reverse reaction rate are equal. The result of this equilibrium is that the concentrations of the reactants and the products do not change.Please mark my answer as brainliest !!!

standards are TYPICALLY USED in titration to determine an unknown concentration and in other analytical chemistry TECHNIQUES. ... The reaction confirms that the solution is at a SPECIFIC concentration. Primary standards are OFTEN used to make standard solutions, solutions with a precisely known concentration.

Very simple --- Ans is oxidationExplanation:One electron is REMOVED from LI and it becomes Li ionMark as brainliest pls , it gives MME MOTIVATION to answer more questions

the first described the TWO most COMMON METHODS of sample automatization encountered in AAS and AFS, flame atomization and electrothermal atomizationExplanation:hope it HELPS

The composition of a typical engine oil is as FOLLOWS: 78% base oil. 10% viscosity improvement additive (to improve flow) 3% detergent (detergent substances which clean the engine)

electromagnetic spectrumExplanation:RANGE of frequencies of electromagnetic RADIATION and their respective WAVELENGTHS and photon ENERGIES

The OIL is typically 73-80% weight/weight ALIPHATIC HYDROCARBONS (primarily ALKANES and cycloalkanes with l-6 rings); 11-15% monoaromatic hydrocarbons; 2-5% diaromatic hydrocarbons; and 4-8% polyaromatic hydrocarbons (Vasquez-Duhalt 1989).

An application window includes elements such as a TITLE bar, a menu bar, the window menu (formerly KNOWN as the system menu), the minimize button, the MAXIMIZE button, the restore button, the close button, a sizing border, a client area, a HORIZONTAL scroll bar, and a vertical scroll bar.Plz thank my answers and mrk brainliest

sBuckminsterfullerenes (C60) are SPHERICAL carbon allotropes where 60 atoms are assembled in pentagons and hexagons, in a GEOMETRY similar to a soccer ball.

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An ORBIT is the simple planar REPRESENTATION of an electron. An orbital refers to the DIMENSIONAL motion of an electron AROUND the nucleus in a three-dimensional motion. An orbital can simply be defined as the space or the region where the electron is likely to be FOUND the most.

:-The MOLE is an amount UNIT SIMILAR to FAMILIAR units like pair, dozen, gross, etc. It provides a specific measure of the number of atoms or molecules in a bulk sample of matter. A mole is DEFINED as the amount of substance containing the same number of discrete entities (atoms, molecules, ions, etc.)

the longer arc is called the major arc AB and the shorter arc ... b: EQUAL arcs of a CIRCLE SUBTEND equal ANGLES at the centre.

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