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Hey DEAR
here is it and
HCl + NAOH > NaCl +H2O
as when ACID and base MIXED they show neutralisation REACTION ...

General FORMULA of alkenes is CNH2N and the SIMPLEST alkene is ethene which is C2H4



hope this helps you

Its WEAK.............

The phenol gets converted into phenoxide ion and proton thus released accepts an electron from FORMING RADICAL. In this way zinc forms zinc oxide and phenyl radical thus PRODUCED forms a bond with radical. However the YIELD of this reaction used for benzene formation is LOWER.

As it CONTAIN RESONANCE

A) 2-methyl butane
b) prop-1-yne
hope it's helpfull to you

We can show it by ELECTROSCOPE. An electroscope is a very simple device CONSISTING of two foils and is used to MEASURE the nature of net static (positively or negatively charged) charge on an object.

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When we move a CYCLE with itsbrakes on the tyres can only skid that is, there is sliding friction which is more than rolling friction hence it is difficult to move a cycle with brakeson. ... If the brakes are WORKING correctly it should be difficult to move as there primary function is to PREVENT the wheels from moving.

Most common is BUCKMINSTERFULLERENE that is C60. Another fairly common FULLERENE is C70, but FULLERENES with 72, 76, 84 and even up to 100 carbon atoms are commonly obtained.

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The TEMPERATURE of a gas in its CRITICAL STATE, above which it cannot be LIQUEFIED by PRESSURE alone.

Hey friend here is your answer

THERE ARE FIVE MAIN TYPES OF CHEMICAL REACTIONS:-

1. COMBINATION REACTION
In this two or more substance combine to give a single substance sometimes with RELEASE of heat.

2.DISPLACEMENT REACTIONS
In this a heavy metal displaces a less reactive metal from its solution.

3.REDOX REACTIONS
In this reaction oxidation and reduction takes place at same time.

4.DOUBLE DISPLACEMENT
It's like displacement but in this precipate is form.

5.REDUCTION
In this a single compound is break into two or more different substances.

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The STRUCTURAL FORMULA of DIMETHYL ETHER is C2H6O

Here is your answer

CHEMICAL equation- the Shortest of writing chemical reactions is called chemical equation.

Examples :-

sodium  react with Hcl  it GIVE Sodium chloride  and HYDROGEN.

NA + Hcl -------------------------> NaCl + H2.

(this is chemical equation )

We can balance also:-

2NA + 2Hcl -------------------------> 2NaCl + H2.

Hope it helps you

What is EVENT Horizon


and


What is INSIDE the BLACK HOLE and what is singularity
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HELLO MATE

It CONDUCTS heat and electricity easily and exhibits the photoelectric effect (EMISSION of electrons when exposed to light) to a MARKED degree. Sodium isby FAR the most commercially important alkali metal. Most processes for the production of sodium involve the ELECTROLYSIS of molten sodiumchloride.
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1. Introduction to the extraction of METALS

What methods can be used in extracting metals from mineral ores?

The Earth's crust contains many different rocks.

Rocks are a mixture of minerals and from some we can make useful substances.

A mineral can be a solid metallic or non–metallic element or a compoundfound naturally in the Earth's crust.

Mineral ores are naturally occurring rocks that provide an economic starting point for the extraction and manufacture of metals for a huge variety of purposes ie a metal ore is rock containing sufficient metal to be worth extracting the metal from it.

The simplest definition of an ore is a mixture of a metal containing mineral and other materials ('minerals') from the surrounding rocks, which can be described as impurities with respect to what you want from the ore.

Metal ores are obtained by mining and that this may involve digging up and processing large amounts of rock.

Most ores are mined have to be concentrated before the metal is extracted and purified.

This often results in lots of waste material that must be dealt with from an environment of view.

The social, economic and environmental impacts of exploiting metal oresare discussed on a separate page.

The rock must CONTAIN enough of the metal compound, hence enough of the metal, to be worth exploiting the ore reserve and extract the metal by physical and chemical processes.

Low grade ores are usually uneconomic to mine and process, but high grade ores have a high enough metal content to be worth mining and extracting the metal.

The metal ore, a mineral or mixture of minerals from which economically viable amounts of metal can be extracted, i.e. its GOT to have enough of the metal, or one of its compounds, in it to be worth digging out!

Ores are often oxides, carbonates or sulphides because these non-metals readily combine with many metals.

e.g. iron  +  oxygen  ===> iron oxide ores

Fe  +  O2(air)  ===> Fe2O3 or Fe3O4    (not balanced equations, just the idea!)

This the typical chemistry involved in metal ore formation.

In extracting metals from ores you have to reverse the process e.g. by heating the ore with carbon (coke or CHARCOAL) in a very hot smelting furnace e.g. in a blast furnace to make iron ...

iron oxide ore  +  carbon  ===> free iron  +  carbon dioxide waste gas

Fe3O4  +  2C  ===>  3Fe  +  2CO2

The iron oxide is reduced (oxygen loss) and the carbon reducing agent is oxidised (oxygen gain).

This is typical extraction chemistry for less reactive metals.

These ores are all FINITE resources so we should use them wisely!

Answer:-

Solution:- The pH of a buffer solution is calculated by using the Handerson equation:

For the given buffer, the weak base is ammonium hydroxide and the acid is ammonium sulfate as it is a salt of weak base(ammonium hydroxide) and strong acid(sulfuric acid).

moles of ammonium hydroxide can be calculated from its given volume and MOLARITY as:

= 0.005 mol

pKa is calculated from given pKb using the formula:

pKa = 14 - pKb

pKa = 14 - 9.26

pKa = 4.74

pH is given as 8.26, LET's plug in the given values in handerson equation and CALCULATE the moles of acid that is ammonium sulfate.

On taking antilog:

Molar MASS of is 132.14 GRAM per mol.

Let's multiply the moles by molar mass to get the mass in grams.

=

So, of ammonium sulfate are required to prepare the buffer.

Heyaa☺
_____________________

⚫Adding water to sugar is a physical change.

➡Physical change :- Changes in the physical properties of substances.

Here in case of sugar in water the change in physical property is sugar dissolve in water .so it is physical change .

⚫Adding water to slaked lime is chemical change.

➡One or more substance REACT with one ANOTHER substance which are READILY available in ENVIRONMENT is called chemical change.

Here in this case , the slaked lime reacts with water and produces heat. so,it is chemical change.

_________________________

Hope you UNDERSTAND...✌
#BeBrainly..❤

The gradual decrease in the ionic radii with the increase in atomic no. is called actinoid contraction. It is due to the IMPERFECT SHIELDING of one 5F ELECTRONS by ANOTHER in the same subshell. ... Actinide contraction is greater from element to element than in lanthanide contraction.

hope it's help you. .....❤❤❤❤

Na2 + AgCl ------------ NaCl + Ag this a EXAMPLE of displacement reaction ................

Mg+ O2 ----------------2MgO .....this a example of combination reaction ......
CaCo3. heat. _________Ca + Co3 ...this a example of decomposition reaction...
EXPLANATION .

1} In above displacement reaction ....we can see that ..Ag( silver ) AND NaCl after reaction Ag where displace from Cl .......

2) In combinations reaction. ..we can see that .......Mg (magnesium) and O2(OXYGEN ) react reach other to form MgO2 (magnesium oxide) is form which mean's two elements react each other to form single compound ..

3) In decomposition reaction ...we can see that. first CaCO3( calcium carbonate) after heating we see calcium and carbonate are DECOMPOSE .......It's mean's compound element get decompose


2)

Hello mate


Alkanes have only single bonds,alkenes contain a carbon-carbon double BOND, and alkynes contain a carbon-carbon triple bond. Aromatichydrocarbons make up a group of related SUBSTANCES obtained by chemical BREAKDOWN of certainpleasant-smelling PLANT extracts.

Hy here is your ANSWER...

1 mole = given mass / molar mass

its ..
given mass / molar mass of h2o that is
3 / 18 = 1 / 6 g of hydrogen PRESENT in the 3 g of h2o....

hope it will HELP u out.....

Alloy is used for ALLOYING which is a very GUD method for improving the properties of a metal.we can get the desired properties by this method. for EG, pure iron is very SOFT and stretches easily when hot BT when 0.05% of carbon is added to it, it bcums hard and strong.
constituents of bronze are copper and tin..
hope it helps u...

Exothermic REACTION eg
BURNING of carbon in oxygen
C +O2___CO2+heat
2 eg of endothermic reaction
the reaction btw nitrogen and oxygen to FORM nitrogen monoxide
N2+O2+Heat _____2NO
2 photosynthesis is ALSO an eg of endothermic reaction

I) graphite
ii) DIAMOND

Electron:

Johann Wilhelm Hittorf in 1869 got the first observations of cathode RAYS. and in 1876, Eugen Goldstein showed that the rays from this glow cast a shadow. He CALLED them Cathode Rays.
In 1896 J. J. Thomson, with his colleagues John S. Townsend and H. A. Wilson, performed experiments that showed that cathode rays were actually unique PARTICLES. 
Rutherford and Bequerel later showed that radioactive materials EMITTED negative particles (called beta particles) which were found to be ELECTRONS.
The charge of the electron was determined by Robert Millikan and Harvey Fletcher in 1909 using the so-called Oil Drop Experiment.

Proton:

Rutherford first showed that atoms had massive nuclei by scattering electrons against gold foil. Later, in 1917 Rutherford proved that the hydrogen nucleus is present in other nuclei. This was basically the discovery of the proton. It was also show that ionized hydrogen had a positive charge.

Neutron:

After the discovery of atomic nuclei and the proton, Rutherford further investigated the composition of atomic Nuclei observing that they could not be made only from hydrogen nuclei (ie protons). He suggested in 1911 that the nucleus was made of positive and neutral particles and dubbed the latter ones neutrons. In the 1920’s and 1930’s it was however determined that indeed tha neutron was a separate particle. Later a colleague of Rutherford, James Chadwick, determined the mass of the neutron. Later Fermi, in 1934, managed to produce slow Neutrons from nuclear reactions

Doberenier arranged elements in the form of triad ( 3 elements in a group) in such a way that the middle ELEMENT of the triad had both atomic mass and PROPERTIES roughly equal to the average of the other two elements of the triad. for EXAMPLE lithium (7) ,Na(23),k(39): =7+39/2 =23

1.Thermal decomposition is used for the production of calcium OXIDE (quick lime ) from calcium carbonate which is a major constituent of cement.

2. Rancidity can be PREVENTED by adding antioxidants to food containing fat and oil, e.g. butylated hydroxy anisole is added to butter as antioxidant.

3.  It can be prevented by packaging fat and oil containing foods in nitrogen gas.

4. Molten NACL is electrolytically decomposed to form sodium metal.

5.  ALUMINIUM metal is obtained by electric decomposition of BAUXITE ore mixed with cryolite.

Answer : The concentration RATIO the TWO acids will have the same pH will be in 4:1.

Explanation:

1)

DISSOCIATION constant of two weak acids HA

...(1)

..(2)

2)

Dissociation constant of two weak acids HB

..(3)

Both acids have the same pH, which MEANS  that:

We get

By ELECTROLYTIC REFINING

The ALCOHOL is METHANOL

4 METHYL 3 propyl hex- 1 -yne
bcoz... ACCORDING to RULES in nomenclature.
if there are two possible chains of equal LENGTH then select that chain of carbon atoms which contain more no. of branches

Your ans is here

from Board of SECONDARY Education Manipur class X TEXT book.

Here is your ANSWER.

1,2-dimethyl BUTYL STRUCTURE

Answer:

CYCLOHEXANE produces less colour INTENSITY and less soot given off during COMBUSTION test compared to cyclohexene. Reason: 1. Cyclohexane is a SATURATED hydrocarbon and cyclohexene is an UNSATURATED hydrocarbon due to the presence of double bond.

Explanation:

HRE is your answer .......HOPE it HELPS ....answer WRITTEN in the ATTACHMENT below ...... pls mark as brainlest

ANSWER :
_________

Electrode CONNECTED to the POSITIVE TERMINAL of the BATTERY is called ANODE.

Electrode connected to the negative terminal of the battery is called CATHODE.