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tion:in berliyium CHLORIDE has no LONE pair of electron pair in Central atom so no REPULSION so linear shape but H2O has lone pair electron so has repulsion and bent shape

The magnesium RIBBON should be CLEANED before burning in the air because the layer of magnesium OXIDE (which is formed DUE to the reaction of magnesium with air ) can be REMOVED in order to get the desired chemical reaction.hope it helps ⬆️☺✔

Basically there are five factors which can affect the IONIZATION energy LIKE size of an atom,The effective nuclear charge,Shielding effect,Penetration effect and ELECTRONIC configuration of an atom. All these factors related to the number of electrones in the VALENCE shell and between the valence shell and NUCLEUS.

tion:Ion-electron method (also called the half-reaction method)Oxidation number change methodAggregate redox species method (or ARS method) - New on periodni.com [1]BALANCING REDOX REACTIONSby the ion-electron method In the ion-electron method (also called the half-reaction method), the redox equation is separated into two half-equations - ONE for oxidation and one for reduction. Each of these half-reactions is balanced separately and then combined to give the balanced redox equation.Equation:HCl + KMnO4 = KCl + MnCl2 + H2O + Cl2 Acidic medium Basic mediumPractice exercises Balanced equationStep 1. Write down the unbalanced equation ('skeleton equation') of the chemical reaction. All reactants and products must be known. For a better result write the reaction in IONIC form. HCl + KMnO4 → KCl + MnCl2 + H2O + Cl2 Step 2. Separate the redox reaction into half-reactions. A redox reaction is nothing but both oxidation and reduction reactions taking place simultaneously.a) Assign oxidation numbers for each atom in the equation. Oxidation number (also called oxidation state) is a measure of the degree of oxidation of an atom in a substance (see: Rules for assigning oxidation numbers). H+1Cl-1 + K+1Mn+7O-24 → K+1Cl-1 + Mn+2Cl-12 + H+12O-2 + Cl02 b) Identify and write out all redox couples in reaction. Identify which reactants are being oxidized (the oxidation number increases when it reacts) and which are being reduced (the oxidation number goes down).O:H+1Cl-1 → Cl02(Cl)R:K+1Mn+7O-24 → Mn+2Cl-12(Mn)c) Combine these redox couples into two half-reactions: one for the oxidation, and one for the reduction (see: Divide the redox reaction into two half-reactions).O:H+1Cl-1 → Cl02 R:K+1Mn+7O-24 → Mn+2Cl-12 Step 3. Balance the ATOMS in each half reaction. A chemical equation must have the same number of atoms of each element on both sides of the equation. Add appropriate coefficients (stoichiometric coefficients) in front of the chemical formulas. Never change a formula when balancing an equation. Balance each half reaction separately.a) Balance all other atoms except hydrogen and oxygen. We can use any of the species that appear in the skeleton equations for this purpose. Keep in mind that reactants should be added only to the left side of the equation and products to the right.O:2HCl → Cl2 R:KMnO4 + 3HCl → MnCl2 + KCl b) Balance the oxygen atoms. Check if there are the same numbers of oxygen atoms on the left and right side, if they aren't equilibrate these atoms by adding water molecules.O:2HCl → Cl2 R:KMnO4 + 3HCl → MnCl2 + KCl + 4H2O c) Balance the hydrogen atoms. Check if there are the same numbers of hydrogen atoms on the left and right side, if they aren't equilibrate these atoms by adding protons (H+).O:2HCl → Cl2 + 2H+ R:KMnO4 + 3HCl + 5H+ → MnCl2 + KCl + 4H2O Step 4. Balance the charge. To balance the charge, add electrons (e-) to the more positive side to equal the less positive side of the half-reaction. It doesn't matter what the charge is as long as it is the same on both sides.O:2HCl → Cl2 + 2H+ + 2E- R:KMnO4 + 3HCl + 5H+ + 5e- → MnCl2 + KCl + 4H2O Step 5. Make electron gain equivalent to electron lost. The electrons lost in the oxidation half-reaction must be equal the electrons gained in the reduction half-reaction. To make the two equal, multiply the coefficients of all species by integers producing the lowest common multiple between the half-reactions.O:2HCl → Cl2 + 2H+ + 2e-| *5R:KMnO4 + 3HCl + 5H+ + 5e- → MnCl2 + KCl + 4H2O| *2O:10HCl → 5Cl2 + 10H+ + 10e- R:2KMnO4 + 6HCl + 10H+ + 10e- → 2MnCl2 + 2KCl + 8H2O Step 6. Add the half-reactions together. The two half-reactions can be combined just like two ALGEBRAIC equations, with the arrow serving as the equals sign. Recombine the two half-reactions by adding all the reactants together on one side and all of the products together on the other side.2KMnO4 + 16HCl + 10H+ + 10e- → 5Cl2 + 2MnCl2 + 10H+ + 2KCl + 10e- + 8H2OStep 7. Simplify the equation. The same species on opposite sides of the arrow can be canceled. Write the equation so that the coefficients are the smallest set of integers possible.2KMnO4 + 16HCl → 5Cl2 + 2MnCl2 + 2KCl + 8H2OFinally, always check to see that the equation is balanced. First, verify that the equation contains the same type and number of atoms on both sides of the equation.ELEMENT LEFT RIGHT DIFFERENCEK 2*1 2*1 0Mn 2*1 2*1 0O 2*4 8*1 0H 16*1 8*2 0Cl 16*1 5*2 + 2*2 + 2*1 0Second, verify that the sum of the charges on one side of the equation is equal to the sum of the charges on the other side. It doesn't matter what the charge is as long as it is the same on both sides.2*0 + 16*0 = 5*0 + 2*0 + 2*0 + 8*00 = 0Since the sum of individual atoms on the left side of the equation matches the sum of the same atoms on the right side, and since the charges on both sides are equal we can write a balanced equation.16HCl + 2KMnO4 → 2KCl + 2MnCl2 + 8H2O + 5Cl2

The Friedel–Crafts reactions are a set of reactions DEVELOPED by Charles Friedel and JAMES Crafts in 1877 to ATTACH SUBSTITUENTS to an AROMATIC ring. Friedel–Crafts reactions are of two main types: alkylation reactions and acylation reactions. Both proceed by electrophilic aromatic substitution.Explanation:

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will have the GREATER MOVEMENT of MOLECULES

A solubility curve is a DATA based graph comparing the AMOUNT of solute that will dissolve in a given amount of solvent at various temperatures. The most typical solubility curves are graphed based solid and gaseous solutes dissolved in 100 GRAMS of water.HOPE IT HELPS ✌✌✌

B . 316 gm Explanation:UPON utilizing 50% energy , energy to be stored = 780 kJ enthalpy of H20 vaporization = 44 kJ /mol No of MOLES of vaporized water = 780 / 44 = 17.7 molMass of 1 mol of water = 18 G mass of 17.7 mol water = 17.7 × 18 = 316 g (APPROXIMATELY)..please mark this answer if it was helpful.

Hey Buddy here's ur answerEnergy levels inside an atom are the specific energies that electrons can have when OCCUPYING specific orbitals. Electrons can be excited to higher ENERGY levels by ABSORBING energy from the SURROUNDINGS. Light is emitted when an electron relaxes from a high energy state to a lower one.The notion of energy levels was proposed in 1913 by Danish physicist Niels Bohr in the Bohr theory of the atom.

tion: HOPE this helps you .MARK me as BRAINLIEST if you GOT the CORRECT ANSWER

n = 100/ 4 .969 × 10^ -19 = 2.012 × 10 ^20 .Explanation:P = 100 WATT = 100 JS -1E = HC = hc/lambda , h = 6.626 × 10 ^-34 ss , C = 3×10 ^8 m/s .Lambda = 400 mm = 400 × 10 ^ 9 m E = 6.626 × 10 ^ -34 × 10 ^ 2 / ( 400 × 10 ^-9 ) = 4 . 969 × 10 ^ -19 J n × E = P n × 4. 969 × 10 ^ -19 = 100 n = 100/ 4.969 × 10 ^19 = 2.012 × 10 ^ 20.

brother I am in 9TH CLASS and U are giving such BIG question

The density of ice and water as a function of temperature: The solid form of most substances is denser than the LIQUID phase; therefore, a block of a given solid will generally sink in its corresponding liquid. However, a block of ice floats in liquid water because ice is less dense than liquid water. Density: 1000 kg/m3, liquid (4º C)(62.4 lb/cu. ft) Appearance: white solid or almost colorless, tr... Melting point: 0º C, 32º F, (273.15 K)Explanation:This ANSWER is Right Answer  Please Make Me BRAINLIST  Have a Nice Day  Keep Distance in infected PERSON Thank You…..

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I THINK it is ASH test.hope it will HELP U

here is ur answer==========Nitro group is ELECTRON WITHDRAWING group. It withdraws electron from benzene rings towards itself such that the PI electrons of benzene are TRANSFERRED to the nitro group this deactivate the benzene ring towards electrophilic substitution REACTION==========

Since PV = Constant , the question become extremely easy.Explanation:PV = ConstantP1 V1 = P2 V27.5 * 5 = P2 x 4 P2 =  9.375Feel FREE to ask if any DOUBT.

350Explanation:No. of EQUIVALENTS of acid=no. of equivalents of BASE

tion:In 1828, a German chemist, FRIEDRICH WOHLER, rejected the vital force THEORY because he prepared organic compound “urea” from an INORGANIC compound “ammonium cyanate” in his own laboratory. With this Revealed of Wohler in CHEMISTRY, the concept of “organic can be only produced by organisms” discarded.

Kelvin K is symbol of temperature and Hz is symbol of frequency EXPLANATION:

Alkanes with stronger INTERMOLECULAR van der WAALS forces have HIGHER boiling point. With increase in the BRANCHING, the surface area of the molecule decreases and vander waals forces of attraction decreases which can be overcome at a relatively lower temperature. Hence, the boiling point of an ALKANE chain decreased with an increase in branching.

tion:corona virus is a very dangerous virus which firstly originated in china.No antidote have been developed for this virus.We can save from these virus by some prevention precautions: 1.Do not touch your mouths,nose and EYES with dirty hands. 2.Wash your hands at a regular interval after 1 HOUR. 3.Maintain a SOCIAL distantion to BREAK the chain of corona. 4.Do not TAKES medicines without the consult of your doctor.

1-chloro PENTANE has more BOILING POINT because of the LINEAR STRUCTURE

option A will be the ANSWER specific rate constant because specific rate constant does not MATTER for any reaction rate while temperature METALS as well as the NATURE matters even magnitude of equilibrium constant also matters and also the LAST but not the least concentration of that solution or solvent also mattersExplanation:

due to electrons are ROTATES in a specific path called ORBIT so electrons doesn't FALL TOWARD NUCLEUS

tion:The AVERAGE velocity of carbon dioxide gas at T1K and its most probable velocity at T2K is 9.0 X 104 CM sec-1Solution:

nswer ÷••)—꧁Sun TANNING or simply tanning is the PROCESS whereby skin color is darkened or tanned. It is most often a result of exposure to ULTRAVIOLET radiation from sunlight or from artificial sources, such as a tanning lamp found in indoor tanning beds. ꧂★彡Hope it helps mark as the BRAINLIEST.... ʕ´• ᴥ •`ʔ彡★(っ◔◡◔)っ ♥ #Follow me ♥

they are compounds that contain CONJUGATED planar RING SYSTEMS with delocalized pi electron clouds instead of discrete ALTERNATING single and DOUBLE bonds ..

Iodoform test Explanation:MARK the ANSWER BRAINLIESTS please