Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

A covalent bond is a chemical bond that involves the sharing of electron PAIRS between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and REPULSIVE FORCES between atoms, when they SHARE electrons, is known as covalent bonding.

ANSWER:

there are 79 MOONS of JUPITER in TOTAL

Answer:

Binary FILES are a computer-readable form of storing data. A program is needed to interpret the data contained in a binary file and display it to the user. Figure 1: ASCII encoding table. Binary files are a collection of bytes, and when binary files are OPENED, they are processed byte by byte.

Answer:

4 project manager at the university in the United KINGDOM and ARRANGE to be a GREAT teacher and arrange for the best way of doing the work of your school year to draw up a career and experience the FOLLOWING chemistry skills and skills in the United STATES and

The CONCENTRATION of an ACID solution can be measured by the FORMULA:

(weight of acid)/(volume of solution) X 100 %

Solution A:

Concentration = 30/500 X 100 => 6 % w/v acid solution

Solution B:

Concentration= 15/250 X 100 => 6   % w/v acid solution

Hence, both solution A and solution B are of the same concentration.

ANSWER:

PLEASE ASK your DOUBT ELABORATELY

Answer:

Lilac

FLAME tests

Ion present Flame test colour

Lithium, LI + Red

Sodium, NA + Yellow

Potassium, K + Lilac

Calcium, Ca 2+ Orange-red

Explanation:

In 1 MOLE,

no. of C atoms =2 × 6.022 × 10^23

no. of H atoms = 6 × 6.022 × 10^23

THEREFORE,

in 3.58 moles,

no. of C atoms = 2 × 6.022 × 10^23 × 3.58 = 43.11752 × 10^23

no. of H atoms = 6 × 6.022 × 10^23 × 3.58 = 129.34256 × 10^23

Total no. of atoms = 10^23 ×(43.11752 + 129.34256)

= 172.46008 × 10^23

ANSWER:

Explanation: The term “control charts” is having a closest meaning to “sampling distribution” because, control charts are also plotted on the DATA obtained from the SAMPLE inspection and also, they SHOW variation in sample data. ... The tolerance DIAGRAM is also called Tier chart of the process.

ANSWER:

EXPLAIN PROPERLY I CANT UNDERSTAND

Explanation:

FIRE extinguishers contain different chemicals, depending on the application. Handheld extinguishers, which are commonly sold at hardware stores for use in the kitchen or garage, are pressurized with nitrogen or CARBON dioxide (CO2) to PROPEL a stream of a fire-squelching AGENT to the fire.

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Answer:

1 mol of cl2 = 71g ( cl atomic no: 17 ... weight = 35 so 2 MOLECULES of cl means 35+35 = 70.9.. SOMETHING so we take it as 71)

then 3 moles = 71×3 =213

1 mol of S8 = 256g

then 6 moles = 6×256 = 1536

1 Mol of p4 = 120g

then 4 moles = 120×4 =480

EXPLANATION:

A halogen element, bromine is a RED volatile LIQUID at room TEMPERATURE which has a reactivity between chlorine and iodine. This element is corrosive to human tissue in a liquid state and its vapors IRRITATE eyes and throat. Bromine vapors are very toxic with inhalation.

• In CHEMISTRY, isomers are MOLECULES or polyatomic ions with identical molecular formulas — that is, same number of atoms of each element — but DISTINCT arrangements of atoms in space. Isomerism is existence or possibility of isomers. Isomers do not necessarily share similar CHEMICAL or physical PROPERTIES.

The Happy PRINCE sent a RUBY for the seamstress because she was very POOR and could not feed her child who was suffering from fever. ... The Happy Prince saw the poor lady and her son. He felt pity for them. So, he asked the SWALLOW to pick out the ruby from the sword and give it to the seamstress.

EXPLANATION:

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ANSWER:

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ANSWER:

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ANSWER:

Answer of NITROGEN ATOM..

Answer:

CHEMICAL NAME: Calcium carbonate

Chemical FORMULA: CaCO3

Common name: LIMESTONE

Answer:

The kinetic theory of gases is a simple, historically significant model of the thermodynamic behavior of gases, with which many principal concepts of thermodynamics were ESTABLISHED. The model describes a gas as a large NUMBER of identical submicroscopic particles, all of which are in constant, rapid, RANDOM motion.

Explanation:

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The following table summarizes the GROUND state electron configuration of the first 20 ELEMENTS on the PERIODIC table.

The following table summarizes the ground state electron configuration of the first 20 elements on the periodic table....

The following table summarizes the ground state electron configuration of the first 20 elements on the periodic table....ATOMIC STRUCTURE. 3.4 - Electron Configurations of Atoms.

The following table summarizes the ground state electron configuration of the first 20 elements on the periodic table....ATOMIC STRUCTURE. 3.4 - Electron Configurations of Atoms.Name Atomic Number Electron Configuration

The following table summarizes the ground state electron configuration of the first 20 elements on the periodic table....ATOMIC STRUCTURE. 3.4 - Electron Configurations of Atoms.Name Atomic Number Electron ConfigurationNeon 10 1S2 2s22p6

The following table summarizes the ground state electron configuration of the first 20 elements on the periodic table....ATOMIC STRUCTURE. 3.4 - Electron Configurations of Atoms.Name Atomic Number Electron ConfigurationNeon 10 1s2 2s22p6Period 3

The following table summarizes the ground state electron configuration of the first 20 elements on the periodic table....ATOMIC STRUCTURE. 3.4 - Electron Configurations of Atoms.Name Atomic Number Electron ConfigurationNeon 10 1s2 2s22p6Period 3Sodium 11 1s2 2s22p63s1

The following table summarizes the ground state electron configuration of the first 20 elements on the periodic table....ATOMIC STRUCTURE. 3.4 - Electron Configurations of Atoms.Name Atomic Number Electron ConfigurationNeon 10 1s2 2s22p6Period 3Sodium 11 1s2 2s22p63s1Magnesium 12 1s2 2s22p63s2

Answer:

the SCIENTIFIC study of the structure of substances and what happens to them in different CONDITIONS or when MIXED with each other

Explanation:

Mark as BRAINLIST

ANSWER:

A KIND advise

Do some HARDWORK yourself too.

Answer:

It's answer is B)Atom lose electron.

Explanation:

CATION is a POSITIVELY charged ION and it loses electrons.

Answer:

This is actually a rather complicated topic, but the answer is essentially that the notion of electronic configuration for Pd and Pt is not even a well-defined concept to begin with and may actually have little or no correspondence with physical reality. Here is a summary of why it is complicated:

1. The notion of electronic configuration begins to break down for the higher elements because for an electronic configuration to exist, the electrons are assumed to populate orbitals that resemble the orbitals of the hydrogen atom. This is where the nomenclature 1s, 2P, 3d, ... actually comes from. In atoms with MANY electrons, this picture breaks down because the orbitals in these atoms actually don't resemble hydrogenic orbitals. The principal causes for this breakdown are

a) relativistic effects (the expected velocity of electrons in these orbitals approach a significant fraction of the speed of light)

b) electron correlation (the presence of electrons in other orbitals significantly affect the properties of electrons in other orbitals)

2. The effect of electron correlation is more severe than just distorting orbitals, it also means that the very notion of electron configuration is insufficient to describe the physical and chemical properties of the atom. This is what makes condensed matter physics so complicated and why it is a great challenge to derive chemistry from quantum mechanics, despite the assertions of physicists like Paul Dirac. It is sometimes convenient to distinguish between two types of electron correlation:

a) Nondynamical correlation: there are atoms for which a single electronic configuration is not sufficient to describe the ground state, i.e. they exhibit what is known as multireference character.

b) Dynamical correlation: the very presence of electrons in certain orbitals can profoundly change the shape (and hence physical properties) of electrons in other orbitals. The very fact that electrons are all negatively charged and that like charges repel is mostly ignored in one-electron theories like Hartree-Fock theory.

3. There is also the question of what is called population analysis: given that all electrons are indistinguishable, how can you figure out which ones are in a, say, 3d orbital, given its wavefunction? It TURNS out that there is no unique way to calculate this, and that oftentimes you can get very different answers depending on how you do this calculation. For EXAMPLE, three very common methods are Mulliken population analysis, Lowdin population analysis, and natural population analysis. They all differ in how they treat coherence (entanglement) between electrons in different orbitals, which can result in different populations.

Summary: the notion of electronic configuration belies several often unappreciated approximations for the actual electronic structure of an atom or molecules. These approximations break down for heavy atoms, making the very notion of electronic configuration difficult to pin down precisely. Nevertheless, this is almost certainly not the answer one expects at the level of AP Chemistry

ANSWER:

Molecular MASS of HNO 3 is the sum of the atomic MASSES of H,NO

So 1+14+16×3=63 U.

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Answer:

6 electrons

Explanation:

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Answer:

Cathode rays are the beam of electrons travelling from the negatively-charged cathode to the positively charged anode at the other end of the vacuum TUBE. He used Crookes tubes and observed shadows cast on the GLOWING wall opposite the negative electrode in the tube

They are the streams of positive IONS of the gas enclosed in the discharge tube. ...

They are deflected by electric and magnetic fields. .They travel in straight lines.

The velocity of canal rays is much SMALLER than the velocity of cathode rays.

ANSWER:

Examples of chemical fungicides include captan, SULFUR, and mancozeb.

Organic fungicides include neem OIL, horticultural oil, and BICARBONATES.

Homeostasis, from the GREEK words for "same" and "steady," refers to any process that living things use to ACTIVELY maintain fairly stable conditions NECESSARY for survival. ... Homeostasis has found USEFUL applications in the SOCIAL sciences.

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Answer:

Compounds

1. Compounds are pure substances.

2. They are made up of two or more elements combined chemically.

3. The constituents of a compound are present in a fixed ratio.

4. Compounds have fixed properties. For example, a particular compound will have fixed temperatures at which it melts and boils.

5. A compound can have properties different from its constituents, as a NEW substance is formed when the constituents are chemically combined.

6. The constituents of a compound can be SEPARATED only by chemical methods.

Mixtures

1. Mixtures are IMPURE substances.

2. They are made up of two or more substances mixed physically.

3. The constituents of a mixture are present in VARYING ratios.

4. Mixtures do not have fixed properties. Their properties depend on the NATURE of their compo­nents and the ratios in which they are combined.

5. In mixtures, no new substance is formed. The properties of a mixture are the same as the properties of its constituents.

6. The constituents of a mixture can be separated easily by physical methods.

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➳ The MOLE allows scientists to calculate the NUMBER of elementary entities USUALLY atoms or molecules in a certain mass of a given substance. AVOGADRO's number is an absolute number: there are 6.022×1023 elementary entities in 1 mole.

ANSWER:

NEUTRALIZATION REACTION and IDK the other ONE

ANSWER:

NH3 < (CH3)3N < CH3NH2 < (CH3)2NH

Explanation:

Order of basicity

ANSWER:

OH,Cl,Ch,NH2 what is DECREASING order of B mean

ANSWER:

क्रान्तिक ताप की परिभाषा :किसी गैस का ताप का वह अधिकतम मान , जिससे कम ताप पर उस गैस को दाब आरोपित करके गैस अवस्था से द्रव अवस्था में परिवर्तित कर दिया जा सके उस तापमान को गैस का क्रांतिक ताप कहते है।

Explanation:

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ANSWER:

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Answer:

Explanation:

metals are good conductors of heat and electricity while non metals are not.mercury is the only metal that does'nt conduct electricity and graphite is the only non metal which conduct electricity.metals have the valance electrons of EITHER 1,2 or 3,while non metals have more than 3.  

just TAKE an example of sodium, magnesium and aluminium.  

sodium-2,8,1.magnesium-2,8,2.aluminium...  

but if we consider carbon,carbon has 2,8,4.here the valance ELECTRON in metals we saw that are 1,2 or 3.while in carbon which is a non-metal has the 4 electrons in its outermost shell.  

metals always form ionic bond by losing its electrons and COMPLETING its octet,while non-metals form bond by COVALENT bond by sharing its electrons to complete its octet.

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Explanation:

The nitrate ION can easily be identified by HEATING copper TURNINGS ALONG with concentrated sulfuric acid. Brown, pungent effervescence is observed which turns blue litmus red.

Answer:

Biogas is an eco-friendly fuel because it helps to reduce the greenhouse gas emissions and our dependency on FOSSIL fuels. It is produced from decomposition of organic matter, thus is an EFFECTIVE WAY of DISPOSAL of organic waste

Explanation:

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ANSWER:

B and c

Explanation:

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Explanation:

In organic chemistry, amines are compounds and functional groups that contain a basic nitrogen ATOM with a lone PAIR. Amines are formally derivatives of ammonia, wherein ONE or more hydrogen atoms have been replaced by a substituent such as an ALKYL or ARYL group.

Answer:

Calcium metal

Explanation:

Calcium metal gives brick red color in flame. It is due to the excitation of electrons by the THERMAL ENERGY which is then followed by de-excitation of an electron to ground STATE along with the liberation of LIGHT in the visible range.

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CLAIRE COMPLAINED thet no one Did TELL him YET

ANSWER:

false

Explanation:

it is PLACED in group 3 and PERIOD 1

U have to TAKE 4 more GLASSES. YES

Answer:

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Explanation:

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Answer:

The d block and F block are TWO groups AMONG those FOUR groups

. The main difference between d block ELEMENTS and f block elements is that d block elements are chemical elements having electrons filled to their d orbitals whereas f block elements are chemical elements having electrons filled to their f orbitals.