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ous NaCl (SODIUM chloride) is neutral there is no reaction between ETHYL ACETATE and AQUEOUS NaCl

ation of METALS is POSSIBLE by zone REFINING METHOD

imum ELECTRONS are K=2 (IST SHELL)L=8 (2ND shell)M=8 (3RD shell)Total=18 electrons

ection of an electric current is by convention the direction in which a positive charge WOULD move. THUS, thecurrent in the EXTERNAL CIRCUIT is DIRECTED away from the positive terminal and toward the negative terminal of the battery. Electronswould actually move through the wires in the opposite direction.

s the QUESTION and what to EXPLAIN

lcium carbonate - CaCo3Y is CO2 Z is calcium OXIDE CAO

ats because it is about 9% less dense than LIQUID WATER. In other WORDS, ice takes up about 9% more SPACE than water, so a liter of ice weighs less than liter water. The heavier water displaces the LIGHTER ice, so ice floats to the top.

Dil.H2SO4 ---> ZNSO4(L) + H2(G)

stance which vapourises during BURNING GIVES flame. But in the case of coal it do not vapourises, it remains UNBURNT. HENCE it does not produce any flame it only produces SMOKE.

end............Here is your answer...............It's due to the higher electronegativity of OXYGEN than Sulphur that it makes INTERMOLECULAR HYDROGEN bonds with the Hydrogen Atoms of Other water MOLECULES thus the Boiling Point of H2O increases and is MUCH higher than that of H2S.

riend .............Here is your answer...........The severe depletion of the Antarctic OZONE layer known as the “ozone hole” occurs because of the special ATMOSPHERIC and chemical conditions that exist there and nowhere ELSE on the GLOBE. The very low winter temperatures in the Antarctic stratosphere CAUSE polar stratospheric clouds (PSCs) to form.

ndard enthalpy of formation for an element in its standard state is ZERO!!!! Elements in their standard state are not FORMED, they just are. So, ΔH°f for C (s, GRAPHITE) is zero, but the ΔH°f for C (s, diamond) is 2 kJ/mol. That is because graphite is the standard state for carbon, not diamond.-----------------------------hope is HELPS------------------------------------

o-nitrphenol CONTAIN INTERMOLECULAR HYDROGEN BONDING while p-nitrphenol contain INTRAMOLECULAR hydrogen bonding

has an outer electronic configration of 3d⁵4s² --Mn₊² (losing 2 e⁻) the electronic configration becomes 3d⁵ (d-orbital is HALF-filled)Stability of a COMPOUND is increases when outer orbital is half filled or completely filled.Cr(26) has an outer electronic configration od 3d⁶4s²--Cr⁺²-- the configration now becomes 3d⁶ (which is not half or completely filled.∴ SINCE 3d⁵ is more stable than 3d⁶Mn⁺² is quite stable than Cr⁺²

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te here is your answer.... NACL is non conductor of electricity in solid STATE because the electron in solid state won't be MOVE HOPE it HELPS you...

E ✌✌✌It retain its STRENGTHS at HIGH temperatures. It is considered a refractory material with a melting point of 6500 DEGREE f. It is also non REACTIVE with other materials that might be put into furnace and is EVEN used to make crucbles containers used to melt other substances.^_^^_^ HOPE IT HELPS ^_^^_^

metals do not posses second IONIZATION energy because it only has it only posses ONE valence electron  and the  2nd and third ionization  ionization possesed only BASED on the valency e.g group 2 ELEMENTS will only posses 1st and 2nd ionization energy . The higher the valency e.g +2, the higher the AMOUNT of energy required to remove the valence electron to change the gaseous atom to the a gaseous ion.

occur on a METALS in the PRESENCE of air and MOIST environment

is regarded as a transition ELEMENT as one electron from 4S SHELL JUMPS in the 3d shell making it's configuration

because POP is not anhydrous in NATURE and quickly absorbs water and thus forms GYPSUM Thus it cannot be TERMED as DRYING agent...Pls mark brainiestHope it helps uhh!!

do so by being composed of certain pairs of solutes: either a WEAK acid plus a SALT derived from that weak acid or a weak base plus a salt of that weak base. ... Rather than CHANGING the pH dramatically by making the SOLUTION basic, the added hydroxide ions react to make water, and the pH does not change much.

mination of molecules of CARBONDIOXIDE from the carboxylic ACID in PREPARATION of ethane and methane by sodium ethanoate or sodium propanoate

g chemical REACTIONS by the effect of electricity is called chemical effect of electric current. EXAMPLES of Chemical Effect (i) Electroplating: One metal is coated on the other substance or metal by the effect of electric current. This is called electroplating. (II) Electrolysis: The compound is decomposed into its CONSTITUENTS under the effect of electric current is called electrolysis.

Group 2 elements such as Berylium, Magnesium, Calcium etc have positive electron GAIN enthalpies. This is because they are electropositive and need to SUPPLIED energy externally if electron is to be ADDED in their already fullfilled s orbital, NOTE that they have an ELECTRONIC configuration of ns2.So, group 2 elements have positive electron gain enthalpies

!! Because the vapour PRESSURE is higher, the liquid is evaporating more EASILY than would be expected... and the ethanol molecules will INTERFERE with hydrogen and therefore make the liquid more volatile...Ethanol and BENZENE ..the hydrogen bonding is reduced by the presence of benzene....hope it helps U...if not...then ignore it.

it is DIFFERENT PROPERTIES than GROUP 1 ELEMENT

aluminium reacts with HNO3 to FORM a protective layer of aluminium OXIDE

please mark this as brainlest answer Explanation:lattice energy depends upon two factors:charge on ion (greater the charge higher is the lattice energy)size of ion (smaller the size of ion greater is the lattice energy)AMONG KCl and MgO, K has charge +1 and MG has charge +2. Also, K + has larger IONIC radii than Mg +2 . So, both the factors add up and the lattice energy of MgO is higher than KCl.LiF and LiBr have the same CATION and same ionic charge. So lattice energy depends upon the size of anion. F − is smaller than Br − , therefore, lattice energy of LiF is higher than LiBr.MgF 2 has a charge +2 while NaCl has a charge +1. Therefore, lattice energy of MgF 2 is higher than NaCl.

on reaction involves loss of electrons/addition of oxygen/removal of hydrogen.Combustion reaction involves burning of SUBSTANCE in presence of oxygen and RELEASE of energy in the form of HEAT , light etc1.Oxidation reaction can be CALLED as combustion reaction  only when they release energy in the form of heat, light etc.For example:CH4+2O2 ------>CO2 +2H2O + Energy2. Generally all hydrocarbons show the property of combustion oxidation reaction.

when it REACT with group to cation it FORM black ppt. which is a CONFORMATIONAL test for group 2 ELEMENT

tions have only SIX electrons in their valence shell making them electron deficient. Thus, they are unstable electrophiles and will react very quickly with nucleophiles to FORM new bonds. Because of their reactivity with heteroatoms, carbocations are very USEFUL INTERMEDIATES in many common organic reactions.

s strong chemicals to oxidize organic matter. Generally, COD is PREFERRED to BOD for process control measurements because RESULTS are more reproducible and are AVAILABLE in just two hours RATHER than five days.

has has more SPACE to MOVE FREELY in AIR

energy is NEEDED to be removed for FREEZING and top part is EXPOSED to the air.

n affinity of noble gases are 0 because they have stable electronic configuration ie they DONT need to lose nor GAIN electrons order of ELECTRON affinity is may F>Cl>Br>I

oxygen and fluorine, fluorine is more electronegative. This in OF2 it has a negative OXIDATION state(-1) .OF2 is a fluoride of oxygen and not oxide of fluoride. According to CONVENTION more electronegative element is written AFTERWARDS. That is why OF2 is written and not F2O (Fluorine oxide)

fission is EITHER a nuclear reaction or a radioactive DECAY process in which the NUCLEUS of an atom SPLITS into SMALLER parts.I hope it is helpful for you

epend on FOLLOWING factors: A) TEMPERATURE B) size of particle

not ALWAYS a homogeneous mixture as its different parts can contain different gases in different amount for EXAMPLE PLACE full of INDUSTRIES will have large amount of smoke as compared to other areas

unt of aluminum PRODUCED annually worldwide is second only to that of steel. While aluminum is widely used in air frame STRUCTURES and increasingly being used in automotive frames to decrease WEIGHT and improve fuel efficiency, it is not widely used as a civil structural material.PLZ MARK ME AS BRAINLIEST

ple who suffer from the black lung disease are the workers working in the HAZARDOUS factories such as COAL, mining etc.The white lung disease includes a broad group of diseases, INCLUDING occupational asthma, chronic obstructive pulmonary disease (COPD), bronchitis, INHALATION injury, infections, lung cancers etcHope u will be helpful from my answer. Good Luck

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