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<STRONG>Answer:

1) non METALS cannot displace hydrogen from the acids. because non metals have ability to accept electrons, they cannot supply electrons to convert H + ion to H2.

2) hydrogen is not a metal, yet it is placed in the activity series of metals. because, it shows graduation with the alkali metal as well as halogens. while like metal hydrogen lose an electron to form positive charge H + ion.

3) Aluminium is more reactive than iron ,yet corrosion is less than that of iron . because aluminium is always covered with a a highly strong protective layer of oxide which HELPS to protect the metal from corrosion. while iron does not covered with such type of layer hence corrosion Rises quickly on iron .

Explanation:

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ANSWER:

IV is the answer to your QUESTION

Explanation:

Acetylene shows acidic CHARACTER becausecarbon is sp hybridized containing 50% s-character which makes -C-H bond highly acidicin NATURE. The acidic character of -C-H can be easily justified when heated with sodium METAL which displaces hydrogen from acetyleneforming sodium ACETYLIDE.

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Explanation: In general, beverages made with soft WATER tend to have a stronger, clearer flavor, since the taste is not altered by the presence of minerals, such as those FOUND in hard water.

ANSWER:

A)BENZYL Chloride.

Explanation:

Answer:

elements are FUNDAMENTAL units by which our WORLD WORKS MIXTURE are mixture of elements

language of chemicals is QUITE easy but proper names of compounds should be used

Answer:

Chrysotile

Explanation:

Asbestos, any of SEVERAL minerals that readily separate into long, flexible fibres. Chrysotile, the FIBROUS FORM of the mineral serpentine, is the best-known type and accounts for about 95 percent of all asbestos in COMMERCIAL use. It is a hydrousmagnesium silicate with the chemical COMPOSITION of Mg3Si2O5(OH)4.

Answer:

The correct answer is (4).

A carbocation is an ion with a positive CHARGE on carbon.

____________________________

This is because due to following reasons :

• In (1), the carbocation is attached to an electron withdrawing group i.e. CYANIDE group, which further decreases the electron DENSITY on carbocation which makes it unstable.

• In (2), the methoxy group is attached to the carbocation. Although, it acts as an electron donating but oxygen, being a more electronegative element, tends to decrease the electron density.

• In (3), the carbocation is attached to an electron withdrawing group i.e. NITRO group, which further decreases the electron density on carbocation which makes it unstable.

• In (4), the carbocation is attached to an electron donating group which tends to increase the electron density on carbocation and thus make it more stable.

ANSWER:

ELECTROLYSIS of BENZOIC ACID

Answer:

Usually NITROGEN gas used for packing food

EXPLANATION:

This is because nitrogen gas PREVENT food items from RANCIDITY process

Food cannot GET bad smell

Food cannot spoiled

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A good EXAMPLE of that is DISSOLVING sugar in water. Once the sugar has all dissolved, you have molecules of sugar mixed in with the molecules of water. The CHEMICAL formulas at the end are the same as they were at the start, so this is a physical change.

Answer:

When Potassium PERMANGANATE is HEATED it turns to Potassium MANGANATE, manganese dioxide and oxygen gas.

Explanation:

Potassium Permanganate when heated in AIR it decomposes. First it LOSES its oxygen and then decomposes to form potassium manganite, manganese oxide and oxygen.

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ANSWER:

CH3COOOH IS THE ANSWER

ANSWER:

Cannizzaro reaction, named after its DISCOVERER Stanislao Cannizzaro, is a chemical reaction that involves the base-induced disproportionation of two molecules of a non-enolizable aldehyde to give a primary alcohol and a carboxylic ACID.

A can be 2 ATOMS of BROMINE.............

Answer: The answer for the MCQ is (d) aqua regia

Explanation: Both hydrochloric ACID and NITRIC acid are used but they are in the ratio 3 : 1, this is CALLED aqua regia

ANSWER:

BENZOIC acid ESTERS are the product of the acid catalysed reaction with alcohols. ... Orthoesters can be obtained by the reaction of alcohols under acidic water free conditions with benzonitrile. Reduction to benzaldehyde and benzyl alcohol is possible USING DIBAL-H, LiAlH4 or SODIUM borohydride.

Answer:

i) Crevice Corrosion

Whenever there is a difference in ionic concentration between any two local areas of a metal, a localized form of corrosion know as crevice corrosion can occur. Examples of areas where crevice corrosion can occur are gaskets, the undersurface of washers, and bolt heads.

(ii) Stress Corrosion CRACKING

Stress Corrosion Cracking can be abbreviated to ‘SCC’ and refers to the cracking of the metal as a result of the corrosive environment and the tensile tress PLACED on the metal. It often occurs at high temperatures.

(III) Intergranular Corrosion

Intergranular corrosion occurs due to the presence of impurities in the grain boundaries that separate the grain formed during the solidification of the metal alloy. It can also occur via the DEPLETION or enrichment of the alloy at these grain boundaries.

(iv) Galvanic Corrosion

When there exists an electric contact between two metals that are electrochemically dissimilar and are in an electrolytic environment, galvanic corrosion can arise. It refers to the degradation of one of these metals at a joint or at a junction. A good example of this type of corrosion would be the degradation that occurs when copper, in a salt-water environment, comes in contact with steel.

Explanation:

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Answer:

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By ELECTROLYTIC REDUCTION

ANSWER:

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Catenation is the ability of Carbon to combine with other carbon atoms MAKING long chains , RINGS and Cyclic COMPOUNDS

Covalent bond is the bond FORMED by the sharing of atoms between elements

Answer:1 mole of H2SO4 CONTAINS 6.022×10²³ ATOMS....which is avogadro number.......then 6 moles of H2SO4 will have.....6×6.022×10²³ atoms=36.132×10²³atoms

Explanation:hope it will help you:)

Answer:

Explanation:

(i) Take 2-3 crystals of POTASSIUM permanganate and dissolve them in 100 ML of water.

(ii) Take out approximately 10 ml of this solution and put it into 90 ml of clear water.

(iii) Take out 10 ml of this solution and put it into another 90 ml of clear water.

(iv) Keep on DILUTING the solution like this 5 to 8 times.

(v) This experiment shows that just a few crystals of potassium permanganate can change colour

of a large volume of water (about 1000 L).

So, we conclude that there must be millions of TINY particles in just ONE crystal of potassium

permanganate, which kept on dividing themselves into smaller and smaller particles.

ANSWER:

CO or CO2..........................................

ANSWER:

o-ethylaniline

Explanation:

ANSWER:

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ANSWER:

C9H11NO2............

ANSWER:

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A fresh egg gets spoiled and TURNS into rotten egg , this is KNOWN to all of us

and is happened by a perticular way and for perticular gas or chemical compounds

so reasons would be

• In the fresh egg , no a single reaction is happened there but when the egg spoiled , a chemical reaction is happened and that is happened for the involving of sulphur.The compound FORMED in this reaction is hydrogen SULFIDE (H2S) which has ONE of the beat known adors of compounds.

And when the this hydrogen sulfide is formed ,after smelling it ,everyone can understand that it is a rotten egg

Answer:

The temperature REMAIN CONSTANT when a LIQUID starts vapourising because of the LATENT heat.

Explanation:

the the question is right but the correction is evaporation /vaporization in the place of boiling.

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Explanation: When BOILING occurs, the more energetic MOLECULES change to a gas, spread out, and FORM bubbles. These rise to the surface and enter the ATMOSPHERE. ... In addition, gas molecules leaving the liquid remove thermal energy from the liquid. Therefore the TEMPERATURE of the liquid remains constant during boiling.

Mendeleev's Periodic Law states that the properties of elements are the periodic FUNCTION of their relative atomic masses. Mendeleev arranged all 63 elements; which were DISCOVERED TILL his time; in the order of their INCREASING relative atomic masses in a tabular FORM. It is known as Mendeleev's Periodic table

Answer:

Chemistry

A compound contains 4.07% hydrogen, 24.27% carbon and 71.65% chlorine. Its molar mass is 98.96g. What are its empirical and molecular formulas?

December 27, 2019avatar

Nizam Yaswanth

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ANSWER

step 1

Divide the given PERCENTAGES of atoms with their molecular masses

H---4.07/1 =4.07

C---24.27/12 =2.02

Cl--71.65/35.5=2.01

step 2

divide all values with the lowest VALUE obtained.

H---4.07/2.01=2

C---2.02/2.01=1

Cl---2.01/2.01=1

THEREFORE the empirical formula is

CH_2ClCH

2

Cl

WEIGHT OF EMPIRICAL FORMULA=12+2+35.5=49.5

Given molecular weight =98.96 which is double of empirical weight .therefore molecular formula is C_2H_4Cl_2C

2

H

4

Cl

2

.

Yes, an unsaturated carbon COMPOUND can have functional GROUP. For EG. Ethene and Ethyl are unsaturated carbon compounds, which have Alkene and Alkyl functional groups .

XEF4 which is SQUARE PLANAR GEOMETRY

Molecular Mass of KMnO4 = Atomic mass of potassium + atomic mass of manganese + 4 (atomic mass of oxygen)

1(39u) + 1(55u) + 4(16u) = 39u + 55u + 64u = 158u

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Explanation:

The loop is cleaned with concentrated hydrochloric acid and DIPPED in powdered borax, then heated in the flame of a BUNSEN BURNER until the borax melts, FORMING a bead. The bead is dipped into a tiny amount of the compound to be tested and is reheated in the flame. The metal BORATE that is formed colors the bead.

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EXPLANATION:

What is Boron it is not Boron it is BORAX. You have DONE MISTAKE for CHECK your question and then aske

ANSWER:

because it get dissolved in water and SETTLE I'm the EMPTY space present BTW water molecules.

Chemical OXYGEN demand

• In environmental chemistry, the chemical oxygen demand is an indicative measure of the amount of oxygen that can be consumed by reactions in a measured solution. It is commonly expressed in mass of oxygen consumed over volume of solution which in SI UNITS is MILLIGRAMS per litre.

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ANSWER:

OPTION ONE is CORRECT I GUESS

Answer:

NAOH and koh are strong BASE because

Explanation:

when they are dissolved in water they give oh- IONS easily and that is the main PROPERTY of bases

Answer:

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Answer:

sorry but there are only 4 TYPES of chemical REACTIONS I.e decomposition,combination,DOUBLE displacement and SINGLE displacement reaction

Answer:

1 a) 177 b) 0 c)-200

2 a) 373 b)250 c)100

because all heat is use to break BOND which HOLD all particul together

No it is not fit for drinking

Demineralised water that has not been remineralised is considered an extreme case of low-mineral or SOFT water because it contains only small amounts of dissolved minerals such as calcium and magnesium that are the major contributors to hardness. ... Loss of calcium, magnesium and other ESSENTIAL ELEMENTS in prepared food.

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Answer:

Hydrogen is a element

Explanation:

Hydrogen is the chemical element with the symbol H and atomic number 1. With a standard atomic weight of 1.008, hydrogen is the lightest element in the PERIODIC table. Hydrogen is the most abundant chemical substance in the Universe, constituting ROUGHLY 75% of all baryonic MASS.