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Crown glass: Usually this is asoda-lime-silica glassand it is frequently used in making lenses of eye glasses.Crookes glass: In this glass mainly cerium oxide (CiO2) is present which sharply absorbs the ultraviolet rays from the sunlight so utilised in making lenses of eye glasses

It is Ester and the equation is below.

Elastic collisions are those collisions in which both momentum and kinetic energy of the system under collision are conserved. If the collisions between the gas molecules were not elastic, the energy would have transformed into some other form of energy and would have dissipated .Moreover the pressure of the gas will also get lowered , if the collisions are not elastic.

All noble gas molecules are monatomic.

The number of possible isomers is 3

Its a Reimer tiemer reaction soccl2 will be electrophile herethanks

ccl2 ( carbene is a electrophile)

r = k*[CH₃COOH]*[C₂H₅OH] .

Initial rate: r₁ = k*(a)*(b)

The "final", r₂ =k*(a/2)*(b/2)

(r₂/r₁) = [k(a/2)(b/2)]/ [k(a*b)]

= [ab/4] / [ab]

= 1/4

⟶ r₂/r₁ = 0.25

⟶ r₂ = (0.25)*r₁

The final rate, is 0.25 times the inital rate.

d)Linkage isomerismoccurs with ambidentate ligands. These ligands are capable of coordinating in more than one way. The best known cases involve the monodentate ligands SCN- / NCS- and NO2-/ ONO-.

For example:

[Co(ONO)(NH3)5]Cl the nitrito isomer -O attached[Co(NO2)(NH3)5]Cl the nitro isomer - N attached.

The overgrowth of algaeconsumes oxygen and blocks sunlight from underwater plants. ... When some types ofalgaeblooms are large and produce chemicals, or toxins, the event is called a harmfulalgalbloomOption D is the answer to this questionPlease HIT THE LIKE BUTTON

55.8 answer

option C.NaHCO3Is the chemical formula for baking soda

asNa2CO3is a salt and it has two cations or it has +2 positive charge , it means then-factor of Na2CO3is 2.

(4)

The hybridisation of carbon;C₁-sp³C₃-sp²

option b is the right answer.

Ans :- Adhesive, any substance that is capable of holding materials together in a functional manner by surface attachment that resists separation. “Adhesive” as a general term includescement, mucilage,glue, and paste—terms that are often used interchangeably for any organic material that forms an adhesive bond. Inorganic substances such asportland cementalso can be considered adhesives, in the sense that they hold objects such as bricks and beams together through surface attachment, but this article is limited to a discussion of organic adhesives, both natural andsynthetic.

Ans :- Sedatives are a diverse group of drugs manufactured for medical purposes to relax the central nervous system. Also known as tranquillizers or central nervous system (CNS) depressants, they encompass drug classes such as barbiturates, benzodiazepines, non-benzodiazepine sedative-hypnotics, anesthetics, antihistamines and opioid narcotics, as well as herbal compounds.

According toBoyle's law

V∝1/P

and According to Charle's lawV∝T

According toAvogadro's lawV∝n

Joining all the above equations we get,V∝nT/P

V= constant nT/P

V= RnT/P

(R=General gas constant)PV=nRTThis is called an Ideal gas equation or general gas equation.

I want to know position of diagonal plane of symmetry. this is not the correct option

3.4 % of Sulphur in Insulin means 3.4 g of Sulphur in 100 g of Insulin.

Molar weight of Sulphur (S) = 32 g

Insulin should contain at least 1 molecule of S. Let the min. molecular wt. of Insulin be x.

Therefore, 3.4% of x = 32 => 3.4*x/100 = 32 => x = 100*32/3.4 => x = 941.176

Hence, Option (1) is correct

Magnesium reacts with oxygen to form magnesium oxide as follows:

2Mg (s) + O2 (g) ---> 2MgO (s)

Information technology is a growing field that offers relatively secure positions for those with solid technical skills and at least a bachelor's degree in an IT-related field. From support to engineering, there are several specializations that deal with the various facets of information technology.

Inside Information TechnologyThe field of information technology (IT) covers the design, administration and support of computer and telecommunications systems. Some of the positions in this field include database and network administrators, computer support specialists, computer scientists, software programmers and system analysts. The majority of career tracks in IT entail design and operational tasks related to computer hardware components, networks and software applications.

Professionals in the IT field work with businesses and organizations to set up and support viable computer networks that will keep systems efficient and reliable. IT encompasses all hardware and software used in the storing, creation and accessing of information. Examples of technologies that professionals work with are firewalls, databases, media storage devices, networks and the Internet.

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Ans :- The Rutherford model is a model of the atom devised by Ernest Rutherford. Rutherford directed the famous Geiger–Marsden experiment in 1909 which suggested, upon Rutherford's 1911 analysis, that J. J. Thomson's plum pudding model of the atom was incorrect.

A typical modern solder has 99.25 percent tin and 0.75 percent copper.Iron(80–98%), carbon (0.2–2%), plus other metals such as chromium, manganese, and vanadium. Metal structures, car and airplane parts, and many other uses.

50% as it's in equilibrium

Ans :- Thepackingof spheres can describe the solidstructuresofcrystals. In a crystal structure, the centers of atoms, ions, or molecules lie on thelattice points. Atoms are assumed to be spherical to explain the bonding and structuresof metalliccrystals.

-A gas refers to a substance that has a single defined thermodynamic state at room temperature whereas, a vapour refers to a substance that is a mixture of two phases at room temperature, namely gaseous and liquid phase.

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Equilibrium represents a state of no change. Looking from a producer’s perspective, profit is their favorite word in the book of economics. Thus it is easy to realize that a producer would be in the state of equilibrium if he is earning maximum profit, i.e has profit maximisation. Therefore producer’s equilibrium becomes our subject matter if we aim to understand profit maximisation.

A firm is said to be in equilibrium when it has no inclination to expand or to contract its output. This state either reflects profit maximisation or minimize losses. A producer can attain equilibrium level under the following two situations:

Combustion is an example of oxidation reaction because when combustion(burning) takes place, oxygen is added up to the thing which is burning, this combustion(burning) can only take place in the presence of oxygen, if oxygen is not present burning will not take place.

1. Addition of oxygen or removal of hydrogen or loss of electrons is known as oxidation.

Conversion of ethanol to ethanoic acid involves two steps.First step includes formation of ethanal,in which removal of hydrogen from ethanol takes place.

And in second step,ethanal is converted into ethanoic acid,which involves addition of oxygen.Thus this is oxidation reaction.

2.When ethyne is burnt in air, it gives a sooty flame. This is due to incomplete combustion caused by limited supply of air. However, if ethyne is burnt with oxygen, it gives a clean flame with temperature 3000°C because of complete combustion. This oxy-acetylene flame is used for welding. It is not possible to attain such a high temperature without mixing oxygen. This is the reason why a mixture of ethyne and air is not used.

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Enzyme catalysisis the increase in the rate of a chemical reaction by the active site of a protein. The proteincatalyst(enzyme) may be part of a multi-subunit complex, and/or may transiently or permanently associate with a Cofactor (e.g. adenosine triphosphate).

Enzyme catalysisis the increase in the rate of a chemical reaction by the active site of a protein. Theproteincatalyst(enzyme) may be part of a multi-subunit complex, and/or may transiently or permanently associate with a Cofactor (e.g. adenosine triphosphate).

Answer

Desorption is a phenomenon where a substance is released from or through the surface.,It is opposite of sorption process..Catalyst can be any chemical entity which helps in increasing the rate of reaction ,but they donot itself take part in reaction i.e they just support the chemical reaction to occur effectively.For catylytic action, the reactants gets adsorbed on the surface of the catalyst & gets converted into the product after the specified procedure.The product or the unreacted reactat has to be removed from the surface of catalyst,at this point the desorption process comes into the picture.desorption helps in removal of the reactant & product form the surface of catalyst & makes its free for the next reaction.

Desorptionis a phenomenon where a substance is released from or through the surface.,It is opposite of sorptionprocess..Catalystcan be any chemical entity which helps in increasing the rate of reaction ,but they donot itself take part in reaction i.e they just support the chemical reaction to occur effectively.For ...

In chemistry, homogeneous catalysis is catalysis in a solution by a soluble catalyst. Strictly speaking, homogeneous catalysis refers to catalytic reactions where the catalyst is in the same phase as the reactants. Homogeneous catalysis applies to reactions in the gas phase and even in solids.

In chemistry, heterogeneous catalysis refers to the form of catalysis where the phase of the catalyst differs from that of the reactants. Phase here refers not only to solid, liquid, vs gas, but also immiscible liquids, e.g. oil and water

An enzyme inhibitor is a molecule that binds to an enzyme and decreases its activity. Since blocking an enzyme's activity can kill a pathogen or correct a metabolic imbalance, many drugs are enzyme inhibitors. They are also used in pesticides.

Catalyst poisoning refers to the partial or total deactivation of a catalyst. Poisoning is caused by chemical compounds. Although usually undesirable, poisoning may be helpful when it results in improved selectivity. For example, Lindlar's catalyst is poisoned so that it selectively catalyzes the reduction of alkynes.

In genetics, a promoter is a region of DNA that initiates transcription of a particular gene. Promoters are located near the transcription start sites of genes, on the same strand and upstream on the DNA. Promoters can be about 100–1000 base pairs long

The Grignard reaction is an organometallic chemical reaction in which alkyl, vinyl, or aryl-magnesium halides add to a carbonyl group in an aldehyde or ketone. This reaction is an important tool for the formation of carbon–carbon bonds.

leaming is the permanent character in the behaviour.

Sugar

Boyle's law, sometimes referred to as the Boyle–Mariotte law, or Mariotte's law, is an experimental gas law that describes how the pressure of a gas tends to increase as the volume of the container decreases

More Examples ofBoyle's Law. As long as the temperature and number of moles of gas remain constant,Boyle's lawmeans doubling the pressure of a gas halves its volume. Here are more examples ofBoyle's lawin action: When the plunger on a sealed syringe is pushed, the pressure increases and the volume decreases.

c. Mesoderm

The Blood Connective Tissue. Blood is called a fluid connective tissue because it develops from the mesoderm of the embryo like any other typical connective tissue and connects all the organ systems of the body by transporting oxygen, nutrients, hormones, etc., and removing wastes from these organs.

Moisten a piece of red litmus paper with filtered water. You can purchase red litmus paper at various science supply stores, and it’s also often available at pet or pool supply stores.

Place your piece of moistened red litmus paper in a test tube. Fill the test tube with the gas you want to test and stopper it.

Wait a few minutes. If the red litmus paper turns blue, it means that the test tube contains a basic gas. If the color of the paper doesn’t change, then there is no basic gas in the tube. You can then repeat the test with blue litmus paper. If it turns red, this indicates there is an acidic gas in the test tube. If both types of litmus paper fail to change color, this indicates that there is a pure elemental gas such as nitrogen in the tube.