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Answer:

0.5 MOLES = 0.5 X 22.4 l at s.t.p. (B) 1 mole = 22.4 l at s.t.p.

Answer:

(b)

EXPLANATION:

as BEE sting is acidic and baking SODA is basic hence neutralization REACTION would take take place.

Answer

it WOULD be option d )

ANSWER:

Nucleophilic Substitution and Elimination

Walden Inversion

O OH

OH

HO

O

(S)-(-) Malic ACID

[a]D= -2.3 °

PCl

5

O Cl

OH

HO

O

Ag2O,

H2O

O OH

OH

HO

O

(R)-(+) Malic acid

[a]D= +2.3 °

PCl5

Ag2O,

H2O

O Cl

OH

HO

O

(+)-2-Chlorosuccinic acid

(-)-2-Chlorosuccinic acid

The displacement of a LEAVING group in a nucleophilic sub

Explanation:

Answer:

Francium is a chemical element with the symbol FR and atomic number 87. Prior to its discovery, it was referred to as eka-caesium. It is extremely radioactive; its most stable isotope, francium-223 (originally called actinium K after the natural decay chain it appears in), has a half-life of only 22 minutes. It is the second-most electropositive element, behind only caesium, and is the second rarest naturally occurring element (after ASTATINE). The ISOTOPES of francium decay quickly into astatine, radium, and radon. The ELECTRONIC structure of a francium atom is [Rn] 7s1, and so the element is classed as an alkali metal.

Answer:

Francium is a chemical element with the symbol Fr and atomic number 87. PRIOR to its discovery, it was referred to as eka-caesium. It is extremely radioactive; its most stable isotope, francium-223 (originally called actinium K after the natural decay chain it appears in), has a half-life of only 22 minutes. It is the SECOND-most ELECTROPOSITIVE element, behind only caesium, and is the second rarest naturally OCCURRING element (after astatine). The isotopes of francium decay quickly into astatine, radium, and radon. The electronic structure of a francium atom is [Rn] 7s1, and so the element is CLASSED as an alkali metal.

Explanation:

HCOOH + KHCO3 = HCOOK + H2O + CO2

(c) Potassium FORMATE

ANSWER:

RADIUS of Y is BIGGER than that of X. In 'X' the NUMBER of shells is three while in Y it's 4

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Answer:

n Hexyl bromine is a halo alkane . therefore it shows higher reactivity TOWARDS nucleophilic substitution than bromobenzene which is a haloarene

On heating with aqueous KOH it FORMS KBr and n Hexyl alcohol

CH3 (CH2)4 CH-Br + KOH----> CH3 (CH2)4 CH-OH +KBr

The reaction mixture on acidification with dilute nitric acid followed by treatment with silver NITRATE produces a yellow precipitate of silver bromide

KBr + AgNO3---->AgBr +KNO3

In contrast bromobenzene doesnot undergo hydrolysis with aq KOH

Bromobenzene + KOH --->No reaction

Therefore on treating the reaction mixture with dilute nitric acid followed by silver nitrate does not PRODUCE a yellow precipitate

ANSWER:

Most chemical reactions involve the breakage of existing chemical bonds and the formation of new ones. However, chemical bonds can be broken in MULTIPLE ways. Furthermore, the manner in which a chemical BOND breaks plays a vital role in deciding the overall outcome of the chemical reaction. The breakage of a chemical bond (usually a covalent bond) is often referred to as bond fission. The two primary types of bond fission are homolytic fission and heterolytic fission

Explanation:

Homolytic fission (sometimes referred to as hemolysis) is a type of bond fission that INVOLVES the dissociation of a given molecule wherein one electron is retained by each of the original fragments of the molecule. Therefore, when a neutrally charged molecule is subjected to homolytic fission, two free radicals are obtained as the product (since each of the chemical species retains one electron from the bond pair).

It can be noted that homolytic fission is also known as homolytic cleavage or bond homolysis. These TERMS are derived from the Greek root ‘homo’, and the term can be roughly translated as ‘equal breaking’.

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Answer:

Hydrogenation Is a chemical REACTION between HYDROGEN(H2) and a compound or element in presence of a CATALYST. Example: CONVERSATION of ethene to ethane

Explanation:

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Answer:

Sulfur, like oxygen, FREQUENTLY forms two bonds. In sulfate, the sulfur is attached to four different atoms. ... That would satisfy the octet of sulfur. In ORDER to fill in the RIGHT number of ELECTRONS for this GROUP of atoms, each oxygen will have a negative formal charge.

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SULPHATE ions are formed from SULPHURIC acid with the LOSS of two protons. Barium ions are USED in the qualitative and quantitative determination of sulphate ions. Barium ions form a white, insoluble barium sulphate precipitate with sulphate ions.

Answer:

In a hydroxybutyraldehyde, the parent carbon ATOM is butane and one aldehyde GROUP is PRESENT. It is REPRESENTED as butanal.

Aldehyde has higher priority than alcohol functional group.

Also one HYDROXYL group at second (or alpha) carbon atom is present.

Hence, the IUPAC name of a hydroxybutyraldehyde is 2-Hydroxy butanal.

ANSWER:

It is Acidic. It has mild sulphuric acid and when we cut it it DISSOLVES in air forming mild sulphuricacid and on reaching our eyes CAUSES burning sensation and our lacremal (tear glands) flush out the eyes. You can check a video my “its aumsum time” “what happens when we cut onions”. It has everything detailed.

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Answer:

In PARTIAL equation method, equation is first DIVIDED into partial equation, which are simply probable steps that might occur in the chemical reaction. These probable steps are then balanced by HIT and trail method and finally ADDED. ... Such balanced partial equations are multiplied by suitable integer

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ANSWER:

THR answer is GIVEN in the PICTURE.

Explanation:

CARBANION is a SPECIES that contain a negative charge. Carbanions is GENERATED by the electrolytic fission of covalent bond involving CARBON atom is which the atom attached to carbon goes without the bonding electrons

The MAIN difference between methane and ethane is that methane contains only one carbon atom BONDED to four hydrogen atoms whereas ethane contains two carbon atoms bonded to each other and each carbon atom is bonded to three hydrogen atoms.

methane and ethane are almost equally stable elements. Explanation: but Ethane has CHEMICAL formula CH2 where as methane has CH4. Which shows methane has more hydrogen molecules than ethane.As hydrogen is most combustible and it reacts fast.So ch4 is more stable than ch2.

EXPLANATION:

നിസ്ണ്സിന്നസ്ണ്സ്‌നസ്ണ്സ്‌നസ്ൻസ്‌നസ്ൻസ്‌നസ്ണ്സ്സ്ണ്സ്‌നസ്ജ്ഡ്ജ്കസക്വക്വജ്വക്സ്ജ്ഡ്ജ്ജ്ഹ് ഡിഡ്ബ്ധ്ധ്ധ്ധ്തെബെവെവേവിഗ്ധസുഷുഡ്‌കൂക്സിക്യൂ

Answer:

Promoters PLAY significant role in the formation of a company.Promoters are the persons who conceive the IDEA of business.

A corporate promoter is a firm or person who does the PRELIMINARY work INCIDENTAL to the formation of a company, including its promotion, incorporation, and FLOTATION, and solicits people to invest money in the company, usually when it is being formed.

Answer:

Rancidity: The oxidation of oils and fats in FOODS RESULTING into a bad smell and bad TASTE is called rancidity. ii. To PREVENT rancidity substances called 'antioxidants' are added to food that contains fats and oils. iii. Rancidity can also be PREVENTED: a.

Answer:

Explanation:

When one or more of the groups is a lone pair of electrons (non-bonded electrons), the experimentally-observed geometry around an atom is SLIGHTLY different than in the case where all groups are bonds. The actual bond angles are similar, but not exactly the same, as those predicted BASED on the total number of groups (the "parent" geometry). When there is a mixture of group types (lone pairs (E) and bonded groups (X)) there are three different types of angles to consider: bond angles between two bonded atoms (X-X angles), angles between a bonded atom and a lone pair (X-E angles), and angles between two lone pairs (E-E angles). Empirical evidence shows the following trend in the degree of bond angles in around atoms with a mixture of group types:

Trend in bond angles:

E-E >X-E >X-X

Using empirical evidence as a guide, we can predict that lone pairs repel other electron groups more strongly than bonded pairs. The molecular geometry of molecules with lone pairs of electrons are better predicted when we consider that electronic repulsion created by lone pairs is stronger than the repulsion from bonded groups. It is difficult to predict the exact bond ANGLE based on this principle, but we can predict approximate angles, as described and SUMMARIZED below in Table  3.2.1.1

Explanation:

Meiosis is the REDUCTIONAL DIVISION. Meiosis results in REDUCTION of chromosome number to one half in the normal DIPLOID CELL. Thus, if a cell has 36 chromosome before meiosis. After meiosis the four daughter cells produced will be having 18 chromosomes each.

Answer:

25 s

Explanation:

if 20% REACTION complete in 10 sec so 30% reaction complete in 15 sec

10+15=25 s

It is CARRIED out in BASIC CONDITION.

ANSWER:

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Answer:

3.01%

RELATED concentration UNITS are parts PER thousand (ppth), parts per million (ppm) and parts per billion (ppb). Parts per thousand is defined as follows:

ppth=massofsolutemassofsample×1000(15.3.4)

(15.3.4)ppth=massofsolutemassofsample×1000

There are similar DEFINITIONS for parts per million and parts per billion:

ppm=massofsolutemassofsample×1,000,000(15.3.5)

(15.3.5)ppm=massofsolutemassofsample×1,000,000

and

ppb=massofsolutemassofsample×1,000,000,

Borazine, also known as borazole, is a POLAR inorganic COMPOUND with the chemical formula B3H6N3. In this cyclic compound, the three BH units and three NH units alternate. The compound is isoelectronic and isostructural with benzene. For this reason borazine is sometimes REFERRED to as “inorganic benzene”.

Chemical formula: B3H6N3

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Answer:

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EXPLANATION:

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ANSWER:

C) FORMYL chloride

Explanation:

a) BENZENE sulfonic ACID

ANSWER:

SPACE WITHIN them decreases

Explanation:

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Answer:

He is either paid SALARY or given honorarium (professional fees). He is a senior EXECUTIVE official. He occupies a key position in the ORGANIZATION. He carries out work according to the direction of his employer.

EXPLANATION:

The resultant is the vector sum of two or more VECTORS. It is the result of adding two or more vectors together. If displacement vectors A, B, and C are added together, the result will be vector R. As SHOWN in the diagram, vector R can be determined by the use of an accurately drawn, scaled, vector addition diagram.

ANSWER:

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ANSWER:

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Answer:

a. Potassium (19)

B. Fluorine (7)

c. Carbon(6), silicon(14).

Answer:

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Answer:

The BASICITY of an acid is equivalent to the number of H+ produced by an acid, when it gets ionized in the aqueous MEDIUM. In aqueous medium, HCl + H2O → H3O+ + CL-. Here hydronium ion also REFERS the H+ ions as it can BREAK into water and H+ ion.

Explanation:

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ANSWER:

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Answer:

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Explanation:

Chemical composition

Chemical compositionPortland CEMENT is MADE up of four main COMPOUNDS: tricalcium silicate (3CaO · SiO2), DICALCIUM silicate (2CaO · SiO2), tricalcium aluminate (3CaO · Al2O3), and a tetra-calcium aluminoferrite (4CaO · Al2O3Fe2O3).

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Italic is a STYLE of font that slants the letters EVENLY to the right. For EXAMPLE, this sentence is italicized. ... If the font does not have an italic version, you will not have true italics and if AVAILABLE only have an oblique type (slanted) version.

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Answer:

Explanation:

Symptoms include NEW or increasingly strong HEADACHES, blurred vision, LOSS of balance, confusion and seizures. In some CASES, there may be no symptoms.

ANSWER:

A and B are both are EQUAL

ANSWER:

By the definition, the carbon atom with SIX neutrons, denoted as carbon-12, has an atomic mass equal to 12 amu.

...

Atomic Number of Elements from 1 to 30.

Atomic Number Element Atomic Mass

17 Chlorine 35.45

18 Argon 39.948

19 POTASSIUM 39.098

20 CALCIUM 40.078

ANSWER:

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