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option D

option c

Reaction for the above is⇒

C + 2Cl₂ ----------→ CCl₄

In this Reaction, Chlorine is the limiting reactant. We can prove that.

12 g of the carbon reacts with 4× 35.5 g of the Chlorine.∴ 1 g of the Carbon reacts with the 142/12 g of the chlorine.∴ 36 g of the Carbon reacts with the 426 g of the Chlorine.

Since, the mas of the chlorine given is less than the chlorine required.∴ Chlorine is the limiting reactant.Thus, whole reaction will be controlled by the Chlorine.

∵ 4× 35.5 g of the Chlorine reacts with the 12 g of the Carbon.∴ 1 g of the Chlorine reacts with the 12/142 g of the Carbon.∴ 142 g of the Chlorine reacts with the 12 g of the Carbon.

Now, the mass of the carbon reacts is less than the mass of the Carbon present, therefore, it is in excess amount.

Now,∵ 2× 35.5 g of the Chlorine produces 154 g of the CCl₄.∴ 1 g of the chlorine produces 154/142 g of the CCl₄.∴ 142 g of the CCl₄ produces 154 g of the CCl₄.

Mass of the CCl₄ Produced is 154 g.Mass of the Carbon left = 36 - 12= 24 g.Mass of the chlorine left = 0 g[Since, it is completely used up in the reaction].

the energy of emmitted electron is proportional to the intensity of incident photon

From the relation..

K.E = h.f - ∅

we get that K.E ∞ f

so, option B is correct..and k.E doesn't depends on intensity of light..

so option C is also Correct

option B,C

this is the answer 😂 16580

Roasting is the process in which the ore is heated below its melting point in presence of air to oxidise the impurities. eg: carbon, sulphur etc removed as their gaseous oxides.

Calcination is the process of heating the ore below its melting point an absence of air to remove volatile impurities like arsenic etc

All of these undergo roasting process

Current will be 0 as both side have equal voltage and no Voltage difference is therethere should be some Voltage difference if you want the current to flow

Whenwatervapor in the air comes into contact with somethingcool, such as theoutside of a coldglass or ice , its molecules slow down and get closer together. When that happens, the gaseouswatervapor turns back into liquidwater droplets. That's condensation..

Calorific value of wood is 18000 kj/kg.how much wood is required to produce heat energy of 360000 kj/kg of heat energy?

Answers

"Here is your answer:

20kg is the answer because 1kg wood give the calorific value 18000kg, then 20kg wood is required to give the calorific value 360000.

Explanation:

The calorific value of wood is one of the most important information the lover of burning in the fireplace need to know.

Some web sites provide an overview of caloric value of species, which shows, that pine and spruce have the highest caloric content of the deciduous species, and among the deciduous trees, the birch has higher caloric value than beech. "

18000=360000÷kg=kg=360000÷18000=20

negative sign for C2H4 as it's reactants and reactant decreases as the reaction processes.

Mass/Charge of A+= (1.97x10^-7kg/charge)

Charge of an electron= 1.6 x 10^-19

Thus Mass of 'A' atom = (1.6 x 10^-19)(1.97x10^-7)= 3.16 x10^-26Kg

a) no. of moles = 24/12 = 2 moles b) no. of moles = 56/56 = 1 molec) no. of moles = 9/27 = 1/3 molesd) no. of moles = 54/108 = 1/2 moles

option A

Right

Bilateral symmetryis a characteristic of animals that are capable of moving freely through their environments.

we can describe the co-ordinate of the table by defining them in the form of x y where X will show the X co-ordinate and Y will show the Y co-ordinate and we will be able to know the exact equation

Characteristics of enzyme catalysis: Asinglemolecule of this catalysis can transform a million molecules of the reactant per second. Hence it is highly efficient. These biochemical catalysts are unique innaturei.e. the same catalyst cannot be used in more than one reaction.

There are four steps in theprocessof an enzyme working. (1) An enzyme and a SUBSTRATE are in the same area. The substrate is the biological molecule that the enzyme will work on. (2) The enzyme grabs onto the substrate with a special area called the ACTIVE SITE

Enzyme catalysed reactions occur at a particular place on the surface of the largeenzyme moleculecalled the active site (as inheterogeneouscatalysts). Thereactant molecule, often called the substrate, is able to form relatively weak, temporary bonds to the enzyme at the active siteThemechanism of enzyme catalysis. In order for a reaction to occur, reactant molecules must contain sufficient energy to cross a potential energy barrier, the activation energy

We can see the desired result

b. Ethyl group contains two carbon atoma

In RNA which of the following base is not present

This reaction allows the alkylation of aryl halides. The more reactive alkyl halide forms an organosodium first, and this reacts as a nucleophile with an aryl halide as the electrophile. Excess alkyl halide and sodium may be used if the symmetric coupled alkanes formed as a side product may be separated readily.

reduction2Fe(3+) → 2Fe(2+) + 2e-

oxidation2I- + 2e- → I2

your question is blur

The Wurtz reaction is an organic reaction used to couple two alkyl halides to form an alkane using sodium metal. The mechanism begins with a single electron transfer (SET) from sodium metal to the alkyl halide, which dissociates to form an alkyl radical and sodium halide salt. Another molecule of sodium performs another SET to the alkyl radical to form a nucleophilic carbanion. The carbanion then attacks another molecule of alkyl halide in a nucleophilic substitution reaction (SN2) to form the final coupled product and another molecule of sodium halide salt.

Additional information for tertiary halides.

The Wurtz reaction, named after Charles Adolphe Wurtz, is a coupling reaction in organic chemistry, organometallic chemistry and recently inorganic main group polymers, whereby two alkyl halides are reacted with sodium metal in dry ether solution to form a higher alkane: 2 R–X + 2 Na → R–R + 2 Na+X. −

the reaction is your filing

The reaction in which alkyl halides ontreatmentwith sodium metal indryethereal (free from moisture) solution give higher alkanes is known as Wurtz reaction

and is used for the preparation of higher alkanes containing even number of carbon atoms.

Wurtz reaction is used to obtain even numbered alkane from alkyl halide. The reaction between alkail halide (dissolved in dry ether) and sodium metal is Wurtz reaction.Alkane and sodium halide is the product of this reaction.Alkane having odd number of carbon atom can't be produced through this reactio.

When two molecules of alkyl halide react with sodium metal in presence of dry ether,an alkane is formed

For example- CH3-Cl + 2Na + CH3Cl= CH3-CH3 +2NaCl

system is present in equilibrium when the quantities of the chemical substances involved do not change unless external factors like temperature, composition of the substances and pressure of the system is changed. At this point the chemical equilibrium is said to be stable. If there is a possibility that the composition at the equilibrium may change, but the rate of change is infinitesimally slow, the system is said to be in ametastablestate and it will havehigher free energy than the actual equilibrium state.

No of protons = atomic number so no of protons =35or no of protons = no of electrons so no of electrons is 35 and no of neutrons = mass number - atomic number . Here mass number is 80 and atomic number is 35 so no of neutrons = 80 - 35 =45 this is the answer

this is a right answer in networking

order of reaction is the order of whole reactiongiven species order is chage of order after reacting in reaction

The overallorder of the reactionis found by adding up the individual orders. For example, if thereactionis firstorderwithrespectto both A and B (a = 1 and b = 1), the overallorderis 2. We call this an overall secondorder reaction.

Ans :- Compoundsofcarbonare defined as chemical substances containingcarbon. Morecompoundsofcarbonexist than any other chemical element except for hydrogen. Organiccarbon compoundsare far more numerous than inorganiccarbon compounds. In general bonds ofcarbon with other elements are covalent bonds.

PLEASE LIKE THE ANSWER

1.litmus test :alcohol does not have any affect on litmus paper so it is neutral whereas carboxylic acid turns blue to red as it is acidic in nature.2.carboxylic acid releases carbon dioxide gas whereas alcohol releases hydrogen gas.3.alcohol has a pleasant smell whereas carboxylic acid has smell of vinegar.

Number of atoms in 1 mole of compound = 6.022 x 10^23Number of atoms in 0.5 mol = 0.5 x 6.022 x 10^23 = 3.011 x 10^23For a hexagonal closed packed structure,Number of octahedral voids = number of atoms in the compoundTherefore, the number of octahedral voids =3.011 x 10^23AndNumber of tetrahedral voids = 2 x octahedral voids = 2 x 3.011 x 10^23 = 6.022 x 10^23The total number of voids = (6.022 + 3.011) x 10^23= 9.033 x 10^23.

Darwinism is a theory of biological evolution developed by the English naturalist Charles Darwin (1809–1882) and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce.

Carbon is a versatile element and is found in many different chemical compounds, including those found in space.

Carbon is versatile because it canform single,double, andtriple bonds.

It can alsoformchains, branched chains, and rings when connected to other carbon atoms.

Carbon is a versatile elementand is found in many different chemical compounds,including those found in space.carbonisversatilebecause it can form single,double and triple bonds.it can also form chains,branched chains,and rings when connected to othercarbonatoms.

(p+q)^2= p^2+q^2+2pq144-22= p^2+q^2122

Natural rubber is treated is with sulphur to improve its properties.

Here only gases will contribute to the total pressure..and the partial pressure of gasses will be in stoichiometric ratios

Given total pressure is = p=> x+2x = p. => x =p/3

so, partial pressure of 1/2O2 = p/3

and partial pressure of NO2 = 2p/3

now Kp = (2p/3)*(p/3)½ = [2p^(3/2) ]/3√3

Due to its tetra valency, carbon atom neither accept or give electrons to form a bond or can saycarbon cannot bond by transformation of eelectrons.So due to its tetravalecy carbon shares its pair of electrons and form covalent bond.

Fossil fuels are the dead remains of plants and animals that were buried under earth millions of years ago and are formed due to continuous change in temperature and pressure in the atmosphere.

I think (c) is the right answer

Many of us are already aware of the definition of a sigma bond from our teachers, text books or from many of the websites online. However, if you are still not aware of what these two bonds are, then here is a basic definition of the two:

Sigma bond:A covalent bond resulting from the formation of a molecular orbital by the end-to-end overlap of atomic orbitals, denoted by the symbol σ.

Now have a look at this illustration to see how this end-to-end overlapping occures:



Fig 1: Formation of a Sigma bond

Misconception: many students in the Pacific may have this worng notion that a sigma

Pi bond:A covalent bond resulting from the formation of a molecular orbital by side-to-side overlap of atomic orbitalsalong a plane perpendicular to a line connecting the nuclei of the atoms, denoted by the symbol π.

Here's another illustration showing how the side-to-side overlapping occurs:

Fig 2: Formation of a Pi bond

It is important to note that different sources use different terms to define what a sigma and pi bond is. However, once examined carefully, it will be evident that they all try to explain the same thing.

option a is correct please like my answer

little complex but thanks

Evaporationis a surface phenomenon in which the particles at the surface gain enough energy to turn into vapour.

The rate of evaporation is affected by the following factors: 1. Temperature: The rate of evaporation increases with an increase in temperature.

2. Surface area: The rate of evaporation increases with an increase in surface area.

3. Humidity: The amount of water vapour present in the air is called humidity.