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ANSWER:

Any Halobutane

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Explanation:

ANSWER:

Phenol reacts with benzenediazonium chloride to give a SOLVENT Yellow 7, a yellow-orange azo compound. The reaction is base-catalysed. The RELATED dye called ANILINE yellow is produced from the reaction of aniline and the diazonium salt.

ANSWER:

What's the QUESTION??

EXPLANATION:

No we TAKE 22.4ltr for solving problems because at STANDARD temperature PRESSURE 1mole =22.4 ltr

ANSWER:

M/2

Explanation:

equivalent WT. = molar mass ÷ N- factor

n factor of CaCO3 is 2

molar mass= M

so equivalent wt. = M/2

Examples of exothermic reactions:

The burning or combustion of hydrocarbon fuels (see Oil Products) e.g. petrol or candle wax, these are very exothermic reactions.

The exothermic burning-combustion of fossil fuels is very important source of energy.

methane (natural gas) + oxygen ==> carbon dioxide + water (+ heat energy)

CH4 + 2O2 ==> CO2 + 2H2O

The burning of magnesium, reaction of magnesium with acids, or the reaction of sodium with water (see Metal Reactivity Series)

2Mg + O2 ==> 2MgO (+ heat energy)

Using hydrogen as a fuel in hydrogen-oxygen fuel cells (see Electrochemistry).

All these combustion reactions are oxidations.

Explosions are caused by VERY fast exothermic reactions producing very fast large expanding volumes of gases.

Metal displacement reactions are also exothermic. If you add iron filings to copper SULFATE solution there is quite a TEMPERATURE rise.

iron + copper sulfate ===> iron sulfate + copper

Fe(s) + CuSO4(aq) ==> FeSO4(aq) + Cu(s)

The neutralisation of acids with alkalis (see Acids, Bases and salts) e.g.

sodium hydroxide + HYDROCHLORIC acid ==> sodium chloride + water

NaOH + HCl ==> NaCl + H2O (+ heat energy)

Its the same for the neutralisation reactions between potassium hydroxide and sulfuric and nitric acids etc.

Other uses of exothermic reactions:

Hand warmers contain chemicals that when mixed together give out heat.

Self-heating cans of coffee, soup or hot chocolate have chemicals contained in the base of the container that when mixed generate enough energy to heat the contents of the can.

The Thermit reaction between aluminium powder and iron(III) oxide is VERY exothermic and when the mixture is ignited with a lit magnesium 'fuse' it goes off like a firework.

aluminium + iron(III) oxide ===> aluminium oxide + iron

2Al + Fe2O3 ===> Al2O3 + 2Fe

This is another example of a displacement reaction where a more reactive metal displaces a less reactive metal from one of its compounds.

This kind of reaction is used to extract certain metals from their purified ores.

Examples

Endothermic Reaction Examples

When ammonium chloride (NH4Cl) is dissolved in water, an endothermic reaction takes place. The salt dissociates into ammonium (NH4+) and chloride (Cl–) ions. The chemical equation can be written as follows: NH4Cl (s) + H2O (l) ⟶ NH4Cl (aq) – Heat

Ammonium nitrate (NH4NO3), an important component in instant cold packs, dissociates into the ammonium cation (NH4+) and the nitrate anion (NO3–) when dissolved in water. These ions go on to form ammonium hydroxide (NH4OH) and nitric acid (HNO3) respectively (by reacting with the OH– and H+ ions in water). This reaction is endothermic in nature since it cools the surroundings by absorbing heat from it.

The formation of nitric oxide from the reaction between nitrogen and oxygen is endothermic since it involves the absorption of approximately 180.5 kilojoules of heat for every mole of N2 and O2.

Other Endothermic Processes

The melting of ice to form water.

Evaporation of liquid water, forming water vapor.

Sublimation of solid CO2

The baking of bread.

ANSWER:

ENERGY of PHOTON is 6.63×10^-19 JOULE

ANSWER:

8 is the answer I THINK MARK me BRAINLIEST

ANSWER:

i don't KNOW sorry

Explanation:

jsjjsjdjdjjddj

Answer:

2Al+6HCl=2AlCl3+3H2

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Explanation:

Answer:

CH2

Explanation:

Percentage of carbon==>36

Percentage of hydrogen ==>6

Atomic mass of carbon ===>12 gram per mole.

Atomic mass of hydrogen ==>1 gram per mole.

Now divide the mass percentage by atomic mass of the element.

Carbon ==>36/12=3

Hydrogen ==>6/1=6

To calculate EMPIRICAL formula we should calculate the simplest RATIO .

For this divide the equation 1 by the SMALLEST RESULT .

Carbon=>3/3=1

Hydrogen ==>6/3=2

The empirical formula is CH2.

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Glycosaminoglycans or mucopolysaccharides are long unbranched POLYSACCHARIDES consisting of a repeating DISACCHARIDE unit. The repeating unit consists of an amino sugar along with a uronic sugar or galactose. Glycosaminoglycans are highly POLAR and attract WATER. They are THEREFORE useful to the body as a lubricant or as a shock absorber.

EXPLANATION:

cccccccccccccccccccccccccccc

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Answer:

vo react HO jata hai air and SURROUNDING atmosphere SE.

Explanation:

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ANSWER:

SODIUM HYDROXIDE is a BASE

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Chack Attechment

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ANSWER:

What's the QUESTION??

EXPLANATION:

Answer:

It may EXPERIENCE a torque if the electric dipole is inclined at an ANGLE THETA with respect to the electric field.

It will experience a force as the electric field is non uniform.

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Explanation:

Answer:

to study the behavior of analyte at the electrode/electrolyte interface we require both potential and current to be MONITORED. Take analyte/electrolyte and put a electrode, and if I WANT to study the behaviour of analyte at this electrode (WE), we need to perturb the SYSTEM, i.e. take away the system from its equilibrium. This can be done by polarizing the electrode either cathodically or anodically by simply applying potential or current to the WE. In order to apply potential, we require some standard/reference electrode, whose potential is almost constant. After the perturbation, we have to record the effect of perturbation, to do this we have to record the current that developed across WE and some other electrode (generally two leads require to complete the current circuit)...

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ANSWER:

CHALK is MADE of CA.........

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Answer:Green- BIODEGRADABLE

Blue- Non Biodegradable

Explanation: You should throw wet garbage like kitchen waste and other natural waste and anything that gets dissolved in the soil within a short PERIOD of TIME in the green bin and THINGS like plastic and other such stuff in the blue bin as they do not DISSOLVE in soil. Hope u understood :D

Answer:

1). a) 300-273=27°C

b) 573-273=300°C

Explanation:

2).100°C is the boiling POINT of water. At 250°C water MAY convert into water VAPOUR..

at water may constant at 100°C because there is no change during transformation of state ..here the heat will USE only for changing the state

Answer:

Tootpaste are basic in NATURE.....they PREVENT the tooth decay by increasing the ph value of mouth which becomes 5.8 after eating....this MUCH of ph value can SLOWLY led to tooth decay . So, we USE toothpastes to bring that ph value greater than 7

Equivalent weights may be calculated from molar MASSES if the chemistry of the substance is WELL known: sulfuric acid has a molar mass of 98.078(5) g mol−1, and supplies TWO MOLES of hydrogen ions per mole of sulfuric acid, so its equivalent weight is 98.078(5) g mol−1/2 EQ mol−1 = 49.039(3) g eq−1.

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ANSWER:

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Answer:

1 Mol M2Ox = (2 X 56 + 16 x) GM

Now ,(2 x 56 + 16 x) of oxide = 112 gm METAL

 4 gm of oxide = 112 x 4/112 + 16 x gm metal

But 112 x 4/112 + 16 x = 2.8(given) :.

 x = 3

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ANSWER:

it become white

Explanation:

because copper SULPHATE have water of crystallisation and because of this it GETS its blue colour but when we heat it the water of crystallisation EVAPORATE and it became white or COLOURLESS

Hey mate

your ANSWER is option A.

1:3:1

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EXPLANATION:

R-X + AQUEOUS KOH = R-OH

R-OH + R-COOH = R- COO-R

ANSWER:

The structure of this is of a plant cell which had been PROVED by THE GREAT SCIENTISTS ROBERT HOKE

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Displacement REACTION is a CHEMICAL reaction in which a more reactive element displaces a less reactive element from its compound. Both metals and non-metals take part in displacement reactions. Example : Reaction of iron nails with COPPER sulphate solution.

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Explanation:

yes you CORRECT

I think you fall in LOVE them you POST such types of questions

ANSWER:

I don't KNOW........................

A correct answer . total SPIN is three for NITROGEN atom while bhor magneton is 3.87 it can be CALCULATED using FORMULA UNDEROOT n(n+2).

Answer:

There have been a total of ONE double century and 33 centuries hit in the World Cup 2015 so far. Martin Guptill of NEW Zealand took over the top spot of HIGHEST run-scorer of 2015 Cricket World Cup as he surpassed Kumar Sangakkara of Sri LANKA total RUNS of 541.

the AUTOTROPIC from of the FOLLOWING METALLOID is Only ANTIMONY

total no of moles of hydrogen will be 112/22.4 that is 5 and total no of moles of chlorine will be 213/70 that is 3.04 moles so limiting reagent will be chlorine and then

if 1mole of chlorine is produced then 2 moles of hcl is produced which can be SEEN by BALANCING the reaction so if 3.04 moles of cl Is produced then 6.08 moles of hcl will be produced so no of molecules of hcl will be 6.08Na where Na is the avogadro NUMBER

ANSWER:

MOLE, ALSO SPELLED mol, in chemistry, a standard scientific unit for MEASURING large quantities of very small entities such as atoms, molecules, or other specified particles.

ANSWER:

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______________________________

The E1cB elimination REACTION is a TYPE of eliminationreaction which occurs under BASIC conditions, where a PARTICULARLY poor leaving group (such as -OH or -OR) and an acidic hydrogen eliminate to form an additional bond. E1cB is a two-step process

Answer

E1cB-elimination reaction

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The E1cB elimination reaction is a TYPE of elimination reaction which occurs under basic conditions, where the HYDROGEN to be removed is relatively acidic, while the leaving group (such as -OH or -OR) is a relatively poor one. Usually a moderate to strong base is present. E1cB is a two-step process, the first step of which may or may not be reversible. First, a base abstracts the relatively acidic proton to generate a stabilized anion. The lone pair of electrons on the anion then moves to the neighboring atom, thus expelling the leaving group and forming double or triple bond. The name of the mechanism - E1cB - stands for Elimination Unimolecular conjugate Base. Elimination refers to the fact that the mechanism is an elimination reaction and will lose two substituents. Unimolecular refers to the fact that the rate-determining step of this reaction only INVOLVES one molecular entity. Finally, conjugate base refers to the formation of the CARBANION intermediate, which is the conjugate base of the starting material.

An example of the E1cB reaction mechanism in the degradation of a hemiacetal under basic conditions.

E1cb should be thought of as being on one end of a continuum, which includes the E1 mechanism at the opposite end, and the E2 mechanism in the middle. The E1 mechanism usually has the opposite characteristics: the leaving group is a good one (like -OTs or -Br), while the hydrogen is not particularly acidic and a strong base is absent. Thus, in the E1 mechanism, the leaving group leaves first to generate a carbocation. Due to the PRESENCE of an empty p orbital after departure of the leaving group, the hydrogen on the neighboring carbon becomes much more acidic, allowing it to then be removed by the weak base in the second step. In an E2 reaction, the presence of a strong base and a good leaving group allows proton abstraction by the base and the departure of the leaving group to occur simultaneously, leading to a concerted transition state in a one-step process.

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ANSWER:

SOLUTION is in the ATTACHMENT

SOLUTION is in the ATTACHMENT