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ΔH =  -270 kcal/molΔH(AB₂) = 30 kcal/molTo find :  ΔH(AX₂) = ?Solution :AB₂(L) + 3X₂(G) ⇔ AX₂(g) + 2BX₂(g)     ΔH =  -270 kcal/mol ΔH(AX₂) + 2Δ(BX₂) - ΔH(AB₂) = -27         4x - 2x = -240        -2x = -240         x = 120ΔH(AX₂) = 4×120 = 480       ΔH(AX₂) = 480 kcal/molKp = Kc×(RT)^(Δn×g)    [Δn = 0]        Kp = KcThe correct option is (C)

tion:Yes, DOBEREINER's triads ALSO exist in the columns of Newlands Octaves. ... ACCORDING to Dobereiner's when elements are arranged in the order of increasing atomic masses, groups of three elements, having similar chemical PROPERTIES are obtained.

Examples of nonpolar molecules include:any of the noble gasses: He, Ne, AR, Kr, Xe (These are atoms, not technically molecules.)any of the homonuclear diatomic ELEMENTS: H2, N2, O2, Cl2 (These are TRULY nonpolar molecules.)carbon dioxide - CO2.benzene - C6H6.carbon tetrachloride - CCl4.methane - CH4.ethylene - C2H4. etc...

tion:Platinum is a chemical ELEMENT with the symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its NAME is derived from the Spanish term platino, MEANING "LITTLE silver".

which COMPOUND..WRITE QUESTION PROPERTY

no other triads  within the FIRST 20 elements RESTRICTION Explanation: Only 3 known triads are there .i)    Li(3), Na(11) , K(19)ii)   Cl(17), Br (35) , I (53)III)  Ca(20) , SR (38) , Ba(56)As clearly seen , there's no other group of triads other than Li, Na, K that exsists within first 20 elements

HydrogenHope it HELPED U

A reaction in which a PRECIPITATE is formed along with the other products is known as a precipitation reaction. 2NaCl + BASO4 ----> NA2SO4 + BaCl2

is the FORMULATION of CARBON TETRACHLORIDE.

Ketones.If R' is HYDROGEN you GET an aldehde

(CH3)3C>CHExplanation:not SURE about the ANSWER

1 or 2 types Explanation:USUALLY ONE or two isotopes of an element are the most stable and common.NAME:Name:Isotopes are written in two different ways. They can be written using their symbol with the mass number (to the upper left) and atomic number (to the lower left) or the ISOTOPE name is written with a dash and the mass number.Hope its help u dear...

iquid and GAS are the 3 STAGES of MATTER

A paint is EITHER COLLOID suspension or colloids. In the paint, the pigment is dispersed in the solvent SOLUTION but they are not dissolved in it. In Water-based PAINTS the solvent is water.Explanation:

tion:In a displacement reaction, a more reactive element replaces a less reactive element from a compound. In a DOUBLE displacement reaction, TWO ATOMS or a group of atoms switch PLACES form new compounds. In a displacement reaction, one displacement TAKES place. ... Salt solutions of two different metals react with each other.

Detergents are better cleansing agents than soaps because they can be used even with hard water. The CHARGED ends of detergents do not form INSOLUBLE precipitates with calcium and magnesium IONS in hard water.Explanation:

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C2H6+7/2O2=2CO2+3H2OMArk as BRAINLIEST

I THINK it's COLLOIDAL SOLUTION FOLLOW

soda, or sodium bicarbonate (NaHCO3), is a chemical that can UNDERGO a decomposition reaction when heated. ... You use this reaction EVERY time you COOK and bake. The produced carbon dioxide gas makes baked goods rise! The higher the TEMPERATURE of the sodium bicarbonate, the faster it will decompose.

If the man made CHANGES are changes that are made by humans and it never OBTAIN NATURALLY in the PART of the world.For EXAMPLE pollution of air which is created by the human by running automobile , industries and much more .Hence it is best example for the man made change in the environment.

Decomposition due to heat ENERGYWHEN ferrous sulphate is heated, it breaks into ferric oxide, SULPHUR DIOXIDE and sulphur trioxide.Decomposition due to light energyWhen silver chloride is kept in sunlight for SOMETIME, it turns from white to gray due to decomposition of silver chloride into silver and chlorineDecomposition due to electricityDuring ELECTROLYSIS of water, it breaks into hydrogen and oxygen.

2NH3Explanation:3H2+N2= 2NH3it is the BALANCED CHEMICAL EQUATION

food is a fuel in human being because food gives US energy to do any WORK without food no ONE alive on the EARTH

because it was SIMILAR to a DOME designed by U.S ARCHITECT named FULLER

Explanation:1.Molecular MASS of NO : 14+16=30Moles of NO: 20/30=2/3=0.662.molecular mass of H : 1 Moles of H :2/1=23.molecular mass of O : 16Moles of O : 8/16=1/2=0.54.molecular mass of N : 14 Moles of N : 7/14=1/2=0.5Thus OPTION (B) hydrogen has maximum no. Of molecules

for a METAL rod to CORRODE the PRESENCE of iron, water is an must which is available in water section where the rod is immersed ........Explanation:so the lower PART of rod gets CORRODED.,....

tion:Bohr MADE a BOLD new suggestion that particles at atomic level would behave different from macroscope (bigger) objects.according to bohrs theory :1.Electrons revolve in certain ORBITS having WELL defined energy 2.electrons do not emit radiation long as they remain energy level 3.supply of energy excites the electron to higher energy level. 4.Emission of energy takes place when it jumps from higher level to lower level..HOPE this helps you ♥

irriversible changeExplanation:PHYSICAL CHANGE

tion:Definition of the Rutherford ModelRutherford's MODEL shows that an atom is MOSTLY empty space, with ELECTRONS orbiting a fixed, positively charged nucleus in set, predictable paths. ... It was after this that Rutherford began developing his model of the atom

anced EQUATION for the reaction between FeCl3 and NaOH is FeCl3 + 3NaOH -> Fe(OH)3 + 3NaCl. SINCE iron(III) chloride and sodium chloride are soluble in water, but not iron(III) hydroxide, the reaction CAUSES a solid to be precipitated. As iron(III) hydroxide is brown, a brown precipitate is formed.--------------------------------------

Lime is defined as calcium OXIDE, a white substance that produces heat energy and is used to make CEMENT and as a soil additive. An example of lime is the powder ADDED to mortar to INCREASE the strength and durability of the bond. An example of lime is the MATERIAL added to soil to increase the pH.

crystallization is used to obtain PURE SALT . It is used to SEPARATE salt from saline water

K2Cr2O7 is prepared from chromite ore (FeCr2O4). It is a red-orange coloured, crystalline COMPOUND....PropertiesK2Cr2O7 is soluble in not water.It is in the form of orange crystals.On heating, potassium DICHROMATE decomposes and FORMS potassium chromate and chromic oxide.It is used in industries as an oxidizing AGENT.

i DONT KNOW SRRY........

1) All MATTER is made of atoms.2) Atoms are indivisible and indestructible. 3) COMPOUNDS are formed by a combination of two or more different KINDS of atoms. 4) A chemical REACTION is arearrangementof atoms

Hope the ANSWER will HELP you Explanation:Mark the answer BRAINLIESTS