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12 cm is the correct answer

Copper ores. The main copper sulphide minerals are chalcopyrite (CuFeS2) chalcocite (Cu2S), covellite (CuS), bornite (Cu5FeS4), tetrahedrite ((Cu,Fe)12Sb4S13) and enargite (Cu3AsS4). The largest source of copper is from porphyry ore deposits in which one or a combination of the aforementioned minerals occurs.

Electronic configuration of Li, Na and K can be written as:Li → 2, 1Na → 2, 8,1K → 2, 8, 8, 1

(a) As all of them have only on electron in their valence shell they belong to Group 1.

(b) Li is the least reactive among them due to its smallest size as it has only 2 shells.

(c) K has the largest atomic radius among the three because it has maximum number of shells.Higher the number of shells, larger is the atomic radius.

Bromine is liquid at room temperature.option c

0 is the right answer

zero is right answer

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0 is the correct answer h

(0) zero is the right answer....

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(0) ZERO is the right answerof this qutions.

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right answer is the 0

0 it is right answer

0 ii the correct answer

correct answer is zero

it is very easy answer to imagine the one upon X is equals to cos upon sin x limit sin x minus cos x upon x sin x by the product Rule By the product rule limit by the multiplication of rule in cos x cos x get cancelled in use again Limited horizontal rule limit X is equals to 0 in bracket x + sin x upon x Cos sin x + cos B then the use of

0 is the right and finale answer

ANSWER OF THIS EQUATION : 0

Integration is a way of adding slices to find the whole. Integration can be used to find areas, volumes, central points and many useful things.

No. of Moles =Mass in gm Molar mass =52 4 = 13 moles

One mole of any element contains 6.022 X 10^23 atoms of the element. Thus 1 mole of He atom consists of 6.022 X 10^23 atoms of He. Thus

6.022 X 10^23 atoms of He = 1 mole of He atom

1 atom of He = 1 / ( 6.022 X 10^23) moles of He

So 12.044 X 1023 atoms of He = ( 1 X 12.044 X 10^23) / ( 6.022 X 10^23) moles of He

= 2 moles of He atom

Thus there are 2 moles of He atom in 12.044 X 10^23 atoms of He.

gallium is the answer of your question

gallium will be the correct answer of your questions

find two numbers whose sum is 27 and product is 182.

Modern periodic law: Properties of elements are the periodic function of their atomic number.Groups:18Periods: 7

State is syn gas wrote the laboratory method of the preparati on of dihydrogell.

According to themodern periodic law, the properties of theelementsand their compounds are aperiodicfunction of their atomic numbers. Thus, in themodern periodic table, atomic number forms the basis of theclassification of elements;Themodern tableis called 'long form' of theperiodic table.

Whencarbon dioxide is passed throughlimewater, it turns milky or turbid due totheformation of calcium carbonate which is insoluble inwater. However if excesscarbon dioxideis allowed topass,theturbidity disappears due totheformation of calcium bicarbonate which is soluble inwater.

Bleaching Powder is calcium Oxychloride. The chemical formula of bleaching powder is CaOCl2.

When bleaching powder reacts with dil. HCl to liberate Cl2 gas,water and Calcium Chloride .

CaOCl2 + 2HCl ----> CaCl2 +Cl2 +H2O.

The reaction betweenzincandhydrochloric acidisZn+HCl= H2 + ZnCl2. It is a single replacement reaction wherezincmetal displaces the hydrogen to form hydrogen gas andzincchloride, a salt.Zincreacts quickly with the acid to form bubbles of hydrogen.

Sol(Colloidal solution) 1.They are heterogeneous in nature.2. They scatter a beam of light and hence show Tyndall effect.3. They are quite stable

Solution1. They are homogeneous in nature2. They do not scatter a beam of light and hence do not show Tyndall effect.3. They are very stable.

Suspension1.They are heterogeneous in nature.2. They do not scatter a beam of light and hence do not show Tyndall effect.3. They are unstable

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Suspension hasthe largestparticles. The Diameter of theseparticles ismore than 100 nm in diameter.Solution has the smallest particles. when we tend to compare the size ofcolloidsandsuspensionthere would very minute difference in them in a way that they are negligible in nature.

when beam of light passes through true solution,no scattering of light happens and in suspension ,scattering of light due to its partical size this phenomenon is called Tyndall effect

A)reaction taking place is combination reaction.A reaction in which two or more reactants combine to form a single product is known as combination reaction.b) CaO+H²O____Ca(OH)²+heat(Calcium hydroxide)c) calcium oxide when reacts vigorously with water , produces slaked lime i.e calcium hydroxide.A large amount of heat is evolved.This is an exothermic reaction.

a thing that indicates the state or level of something

The Lymanseries liesin theUltraviolet region. The Balmerseries liesin the Visibleregion. The Paschen,Brackett and Pfundseries liein the Infraredregion. Whichregionof thehydrogen spectrumis the visibleregion?

suspension is a heterogeneousmixturein which solute-like particles settle out of a solvent-like phase sometime after their introduction. We use the terms 'solute-like' and 'solvent-like' because we are dealing with a heterogeneous mixture, while the terms solute and solvent refer tohomogeneoussolutions.

We apply the word 'suspension' when particles are big enough to eventually settle. If the particles are too small to ever settle, they are said to form acolloid.

Asuspensionis a heterogeneous mixture in which solute-like particles settle out of a solvent-like phase sometime after their introduction. ... We apply the word 'suspension' when particles are big enough to eventually settle. If the particles are too small to ever settle, they are said to form a colloid.

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The splitting of light through the prism in different colors are called dispersion of light

(c) CO2

Explanation:When carbon dioxide is passed through lime water, which is a diluted solution of Ca(OH) 2, it turns milky due to the formation of water-insoluble precipitate CaCO3.But, on prolonged passage, the solution turns clear.

Asuspensionis a heterogeneous mixture in which the solute particles do not dissolve, but getsuspendedthroughout the bulk of the solvent, left floating around freely in the medium

A suspension is a heterogeneous mixture in which the solute particles do not dissolve but remain suspend

Carbon dioxide (CO2) turns lime water milky due to the formation of insoluble calcium carbonate (CaCO3).

(b) is correct option

A compound results from a chemical reaction between components, forming a new substance. For example, you can combine iron filings with sulphur to form a mixture. All it takes is a magnet to separate the iron from the sulphur. On the other hand, if you heat the iron and sulphur, you form iron sulphide, which is a compound.

(a) The mixture of Iron and Sulphur is heterogeneous.

(b) Compound of Iron and Sulphur is not attracted by magnet.

Acrylicfibre is thesyntheticfibre which is a substitute of wool.

Fe2O3

Several forms of rust are distinguishable visually and by spectroscopy, and form under different circumstances.Rust consists of hydrated iron(III) oxidesFe2O3. nH2O, iron(III) oxide-hydroxide (FeO(OH), Fe(OH)3. Rusting is the common term for corrosion of iron and its alloys, such as steel

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Rusting of iron is an undesirable changebecause the layer ofrustformed fall off, exposing the metal to furtherrusting.As result,ironobjects become weak with passage of time

Galvanising is a method ofrustprevention. Theiron orsteel object is coated in a thin layer ofzinc. This stops oxygen and water reaching the metal underneath - but thezincalso acts as a sacrificial metal.Zinc ismore reactivethan iron, so it oxidises in preference to theironobject.

Corrosion and rusting are two chemical processes, which result in disintegration of materials.

--Corrosion is the layer-by-layer spoiling or degrading of any metallic surface through such agents as oxygen, water vapour, hydrogen sulfide and other possible pollutants.

--Rusting is merely a specific case of corrosion where the metal surface concerned is iron and the red-brown flakes of Fe2O3.nH2O that form are what is calledrust.

When a metal reacts with external environment its structure will be deteroited and break down into small pieces.Rusting in a chemical process which is common with all metals containing iron.

In telecommunications networks, a node is either a redistribution point or a communication endpoint. The definition of a node depends on the network and protocol layer referred to.

The wave function (psi²) denotes, the probability of finding an eletron, which can be zero at certain points. Places where the wavefunction is zero are called “nodes”. If the wavefunction is zero at some point, it implies that the probability density at that position is zero. option (A)

Corrosionis a natural process, which converts a refined metal to a more chemically-stable form, such as its oxide, hydroxide, or sulfide.

when new, but get coated with a reddish brown powder when left for some time this process called corrosion

Corrosionis a natural process, which converts a refined metal to a more chemically-stable form, such as its oxide, hydroxide, or sulfide. It is the gradual destruction of materials (usually metals) by chemical and electrochemical reaction with their environment.

Corrosionis a natural process, which converts a refined metal to a more chemically-stable form, such as its oxide, hydroxide, or sulfide. It is the gradual destruction of materials (usually metals) by chemical and/or electrochemical reaction with their environment.

Corrosionis anatural process, which converts a refined metal to a more chemically-stable form, such as itsoxide,hydroxide, orsulfide. It is the gradual destruction of materials (usuallymetals) by chemical and/or electrochemical reaction with their environment.Corrosion engineeringis the field dedicated to controlling and stopping corrosion.

the ruusting of iron is called corrosion. the process is due to present of oxygen and hydrogen in a air came in contact of iron.

In easy language,corrosion is a process in which metal reacts with water and oxygen to form a reddish brown layer,which makes the metal weak.

Cathodic protection.By using more electrically active alloy near the protected equipment, this method diverts the attention of the corrosive agents to itself until it completely degrades. There are two types of cathodic protection: sacrificial anodes and impressed currents. Cathodic protection is commonly used in underground pipelines and marine transport industry.

Corrosion inhibitors.Corrosion inhibitors are chemicals added to equipment to form a thin layer of protection against corrosion catalysts. These additives are added even when the machine to be protected is operating. While inhibitors mix with the liquid during application, the latter does not affect the quality of the additives. Liquid storage facilities are among the common clients who get corrosion inhibitors.

Coatings.Coating is the easiest way to protect your equipment. Coating materials such as epoxy, urethane, and zinc can add an extra layer of defense to your facilities with proper application and curing. Coatings depend on the material to be protected and the type of chemical compound to be used.

Abrasive blasting.Abrasive blasting uses a high-velocity machine that propels medium to a surface of a material. With this, you can control the damage brought by corrosion and prepare it for anti-corrosion materials application. Usually, abrasive blasting occurs right before other anti-corrosion materials are applied to the surface of the equipment.

Noble metals usedfor dental castings continue to consist of alloys of gold, palladium, and silver (not anoble metal), with smaller amounts of iridium, ruthenium, and platinum. The majority areusedas a backing for ceramic baking, with the restusedas inlays, onlays, and unveneered crowns.

Corrosion:- is nothing but it is a chemical reaction (most likely a oxidation process) in which wearing of metal takes place . Here the metal can be anything iron, copper etc .Rusting:-This is a part ofcorrosionin which Iron reacts with water or moist air to form iron oxides and therebycorrosiontakes place .

Saponification is a process that involves conversion of fat or oil into soap and alcohol by the action of heat in the presence of aqueous alkali. Soaps are salts of fatty acids whereas fatty acids are saturated monocarboxylic acids that have long carbon chains e.g. CH₃(CH₂)₁₄COOH

saponification is a process by which fat and oil converses into soap and alcohol by heat in the presence of aqueous solution

Saponification is a process that involves conversion of fat/oil into soap and alcohol by the action of heat in the presence of aqueous alkali.

by definitionpH = -log[H+]thus[H] = 10^(-pH)

[H]1 = 10^-6{H]2 = 10^-5

[H]2/ [H]1 =10

Soap is prepared by heating animal fat or vegetable oil with concentrated sodium hydroxide . HeatFat or oil + NaOH ----------> Soap +Glycerol.The process of making soap by the hydrolysis of fats and oils with alkalis is called Saponification.Raw Materials Required For preparation of soap in Laboratory :--> Vegetable oil---> Sodium Hydroxide---> Commom salt---> Beaker---> Bunsen Burner. TEST: saops are mostly basic in nature and we can do litmus test red litmus will turn to blue.

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PH = -log(1*10^-4) Because(log₁₀ 10= 1)PH= 4so Answer = 4