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Explanation:

Mond's process is the method USED for REFINING of nickel metal. In this process, nickel is heated in a steam of carbon monoxide to FORM volatile nickel carbonyl NI(CO)4. Nickel carbonyl vapours on further heating, decomposes giving pure nickel.

Answer:

LI is the CORRECT answer there is a UNEXPECTED order of SIZE like zigzig so if you need comment

ANSWER:

Alloys are, for example, GENERALLY harder than pure metals. They are made up of atoms of different sizes, rather than being UNIFORM. 

EXPLANATION:

This means that the layers of atoms cannot slide over each other easily, making the whole alloy much stronger than any of the pure metals that the alloy contains in isolation

Answer:

that ATOM which gains 2 electrons ACQUIRE negative CHARGE

Answer:

he REDUCTION of the nitro-group might procede through attack of hydride onto the nitrogen atom or ELECTRON transfer onto the group with subsequent reaction of the anion with proton (the exact MECHANISM depends on conditions and REAGENTS). It can produce a wide amount of monomeric products, in PARTICULAR: nitrosocompounds, hydroxilamines and amines. It is known, that amines can react with nitrosocompounds forming the N=N bond. It looks like the first step in the reaction is a nucleoplilic attack of the amine nitrogen onto nitroso nitrogene with subsequent elimination of water.

Explanation:

Answer:

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Explanation:

in a different story about it is I was WONDERING why I didn't realize it how do you need anything from I think it would might have been on it a bit few WEEKS minutes and AGO I was wondering able and a few GREAT day and time

ANSWER:

(a) HELIUM is the LIGHTEST METAL.

Answer:

The WATER soluble substance which absorb MOISTURE from the air and then DISSOLVE on the absorbed moisture to change into liquid taste are called deliquescent SUBSTANCES whereas the substances which absorb moisture from air but do not change their STATE are called hygroscopic substances.

Explanation:

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ANSWER:

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ANSWER:

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ANSWER:

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Answer:

the FIRST group of ELEMENTS are CALLED ALKALI matter

ANSWER:

C is PhCOCH3

EXPLANATION:

the complete explanation is mentioned in the attached IMAGE

ANSWER:

Al+3,Mg2+,CL,Al,Cl-

Explanation:

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n = 3 means third shell

I = 0 means s subshell of third shell.

m = 0 means EITHER 3S has I or 2 electrons

∴ Electronic configuration is

Is 2,2s 2,2P 6,3S 1OR 3S 2

∴ Atomic NUMBER is 11 or 12

ANSWER:

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Answer:

1:-Br1-

2:-divalent

3:-reactants

4:-ammonium

5:-NITRIC oxide.

6:-nitrogen

7:-zero

8:-NITROUS oxide

9:-HEAT required

10:-K1+

Explanation:

E2 O3

E2 O3 is the TYPE of oxide Eka – aluminium would FORM.

ANSWER:

Not UNDERSTAND........

Answer:

The hydrochloric acid catalyzes an exothermic decomposition of hydrogen peroxide into oxygen and WATER. The accumulation of heat and non-condensable gas increases temperature and pressure in this REACTION PROCESS ALWAYS lead to runaway reaction and accident owing to inadvertent mixing

Explanation:

Answer:

An electric potential is the AMOUNT of work needed to move a unit of electric charge from a reference POINT to a specific point in an electric field WITHOUT PRODUCING an acceleration. Typically, the reference point is the Earth or a point at infinity, although any point can be USED. 

ANSWER:

SMOKE Detectors.

Archaeological Dating.

Medical USE

In closed insulated container a liquid is stirred with a paddle to INCREASE the temperature, THEREFORE, it behaves as an adiabatic process, q=0.

HENCE, from the first law of thermodynamics:

ΔE=q+W; ∵q=0

ΔE=W but not EQUAL to zero.

Hence, the correct answer is option B.

ANSWER:

The symbol over the arrow KNOWN as LAMDA TELLS the change in heat supplied

Explanation:

ANSWER:

The crystal structure of ionic compounds is strong and rigid. It takes a lot of ENERGY to BREAK all those ionic bonds. As a result, ionic compounds are solids with high melting and boiling points. ... The strong bonds between their oppositely charged IONS LOCK them into place in the crystal

ANSWER:

VAPOUR PRESSURE of PURE SOLVENT

ANSWER:

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ANSWER:

Since pi = Xi Ptotal, the PARTIAL pressure of each GAS can be found by multiplying its mole fraction times the total pressure, 750.0 torr. ... PH2 = 734.8 torr. The AMOUNT of H2(g) collected can be calculated using the ideal gas law.

Explanation:

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<P>EXPLANATION:

Since the external pressure is greatly different from the pressure of

N

2

and thus, the PROCESS is irreversible.

w=−P

ext

(V

2

−V

1

)

w=−1×(V

2

−V

1

)

Given V

1

=2 litre V

2

=? T=273K

P

1

=5atm P

2

=1atm

∴P

1

V

1

=P

2

V

2

∴V

2

=

1

2×5

=10 litre

∴w=−1×(10−2)=−8 litre atm

∴=−

0.0821

8×1.987

calorie=−

0.0821

8×1.987×4.184

J=−810.10 JOULE

Answer:

Phosphate units.

Explanation:

ADP is adenosine diphosphate and it has two phosphate groups while ATP is adenosine triphosphate and it has three phosphate groups.

Thus, ATP and ADP differ in number of phosphate units.

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Images FORMED by PLANE MIRRORS are virtual, UPRIGHT, left-right REVERSED, the same distance from the mirror as the object's distance, and the same size as the object.

Explanation:

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EXPLANATION:

During the formation of BECL2, beryllium atom bonds with two chlorine atoms via single covalent bonds. The number of electron pairs around the CENTRAL atom will be two. No lone pair is found in the molecule. If we analyse this information then we can conclude that BeCl2 has sp hybridization.

Answer:

a) Phosphinic acid.

Explanation:

White phosphorus (P4) REACT with sodium HYDROXIDE and water (NaOH) to PRODUCE phosphinic acid and sodium HYPOPHOSPHITE.

-

ANSWER:

Magnesium Chloride(MGCL 2) is ACTUALLY a neutral salt as it is an ionic compound prepared from an acid(HCl) and a base[MG(OH) 2].

EXPLANATION:

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ANSWER:

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• 0 °C (freezing point of water) = 273.15 K. 25 °C (room TEMPERATURE) = 298.15 K. 100 °C (boiling point of water) = 373.15 K. 0K (absolute zero) = - 273.15 Celsius.

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Answer

Molar mass of NItrogen =14g/MOLE

i.e mass of 1 mole of N=14g

1 mole CONTAINS 6.022×10

23

atoms

∴ mass of 6.022×10

23

atoms of N=14g

Mass of 1 atom of N=

6.022×10

23

atoms

14g

Mass of 1 atom of N is 2.32×10

−23

G

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ANSWER:

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Explanation:

the WORLD of the world of the world

MASS in grams = 6 g

Molar mass of oxygen = 6 g/mol

No of MOLES = (mass in grams)/molar mass

No of moles of oxygen = 6/6 = 1 mol

No of molecules = (no of moles) x Avogadro's numbers

No of molecules = 1 x 6.02x10^23

No of molecules of oxygen = 6.02x10^23.

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Explanation:

Some air pollutants are poisonous. Inhaling them can increase the chance you'll have health problems. People with heart or lung disease, older adults and children are at greater risk from air pollution. Air pollution isn't just outside - the air inside buildings can also be POLLUTED and affect your health.

Air pollution can also CAUSE HEADACHES, dizziness, and nausea. ... Long-term health effects from air pollution include heart disease, lung cancer, and respiratory diseases such as emphysema. Air pollution can also cause long-term DAMAGE to people's nerves, brain, kidneys, liver, and other organs.

Answer:

Decomposition REACTIONS are ALSO called analysis reactions because they are EXTREMELY valuable in ANALYTICAL techniques. Examples INCLUDE mass spectrometry, gravimetric analysis, and thermogravimetric analysis.

ANSWER:

d)A.C>FAN>COOLER is the answer

Answer:

Fractional distillation is a type of distillation which involves the separation of miscible liquids. The PROCESS involves REPEATED distillations and condensations and the mixture is usually separated into component parts. The separation happens when the mixture is HEATED at a certain temperature where fractions of the mixture start to vaporize.

The basic principle of this type of distillation is that different liquids boil and evaporate at different temperatures. So when the mixture is heated, the substance with lower boiling point STARTS to boil first and convert into vapours

Explanation:

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ANSWER:

Explanation:

Al2O3.

Aluminum oxide has a CHEMICAL FORMULA Al2O3.

Answer:

4s^2 3d^4

Explanation:

PRINCIPLE quantum NUMBER (n) = 3

azimuthal quantum number (l)= 2

magnetic quantum number (M1) = -1

spin quantum number (m2) = +1/2

ANSWER:

Mole fraction of solute=  

Total number of moles  of all the solvent

Moles of solute

​  

 X_{A}= \frac{mol A}{mol A + mol B}X  

A

​  

=  

molA+molB

molA

​  

And

X_{B}= \frac{mol B}{mol A + mol B}X  

B

​  

=  

molA+molB

molB

​  

Note:

1. In the given mixture, sum of all the mole fractions is equal to one.

XA + XB = 1

2. The multiplication of the mole fraction by 100 GIVES the mole percentage.

3. Mole fraction is a unitless and dimensionless expression

Explanation:

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HERE IS UR ANSWER

Assertion is wrong but reason is correct.

A mixture of acetone and WATER cannot be SEPARATED by using SIMPLE distillation method

ANSWER:

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