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ong>Answer:

Molecules that posses chirality are optically active. CHIRAL CARBON is the one having all different groups attached.

Propanoic acid is: CH

3

CH

2

COOH has no chirality thus its optically inactive

Glyceraldehyde:HOCCH(OH)CH

2

OH has a ciral CENTER thus its optically active

Lactic acid is H

3

CCH(OH)COOH has a chiral center thus its optically active

Glucose is HOCCH(OH)CH(OH)CH(OH)CH(OH)CH

2

OH has multiple chiral center thus its optically active

ong>Answer:

1) use the Hückel 4n + 2 RULE to DETERMINE WHETHER or not a given polyunsaturated cyclic hydrocarbon should exhibit aromatic properties.

describe the difference in properties between an aromatic hydrocarbon, such as BENZENE, and a non-aromatic polyunsaturated cyclic hydrocarbon, such as cyclobutadiene or cyclooctatetraene.

2) draw molecular ORBITAL diagrams for aromatic species, such as benzene, the cyclopentadienyl anion and pyridine, and compare these diagrams with those obtained for non-aromatic species, such as cyclobutadiene and the cyclopentadienyl.

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B coefficient WOULD be 2,2,1

OPTION B is the RIGHT answer

HETEROGENEOUS MIXTURE

ong>Answer:

defination of DEATH

Explanation:

death is the PERMANENT sleep of a INDIVIDUAL in the laps of almighty with any DISTRIBUTION

ong>Answer:

An alloy is a HOMOGENOUS MIXTURE of two or more metals or non-metals or nonmetals mixed in a molten state. It can EITHER be a solid SOLUTION of the elements of a SINGLE phase or a mixture of two or more metallic phases.

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ong>ANSWER:

Mist CONTAINS TINY droplets of water, which acts as particles of colloid dispersed in air. Hence, mist is HETEROGENOUS.

ᴍᴀᴛʜᴇᴍᴀᴛɪᴄs, ᴛʜᴇ ʟᴏɢᴀʀɪᴛʜᴍ ɪs ᴛʜᴇ ɪɴᴠᴇʀsᴇ ғᴜɴᴄᴛɪᴏɴ ᴛᴏ ᴇxᴘᴏɴᴇɴᴛɪᴀᴛɪᴏɴ. Tʜᴀᴛ ᴍᴇᴀɴs ᴛʜᴇ ʟᴏɢᴀʀɪᴛʜᴍ ᴏғ ᴀ ɢɪᴠᴇɴ ɴᴜᴍʙᴇʀ X ɪs ᴛʜᴇ ᴇxᴘᴏɴᴇɴᴛ ᴛᴏ ᴡʜɪᴄʜ ᴀɴᴏᴛʜᴇʀ ғɪxᴇᴅ ɴᴜᴍʙᴇʀ, ᴛʜᴇ ʙᴀsᴇ ʙ, ᴍᴜsᴛ ʙᴇ ʀᴀɪsᴇᴅ, ᴛᴏ ᴘʀᴏᴅᴜᴄᴇ ᴛʜᴀᴛ ɴᴜᴍʙᴇʀ x.

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In AIR, all GASES would have a UNIFORM composition. THEREFORE, the air is an example of homogeneous MIXTURE.

ong>ANSWER:

By picking the LEAVES by hands

udjfuf7 DEAR Davzueueuruur

ong>Explanation:

isotopes- Isotopes are atoms with the same number of PROTONS but differing NUMBERS of neutrons.

isobars- Isobars are atoms of different CHEMICAL elements having equal values for atomic mass. Isotopes have the same atomic number.

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Distillation can be used to PREPARE pure water from TAP water by HEATING the tap water until the BOILING point of water is reached. The pure water will separate out. This vapors is cooled and pure water is OBTAINED.

ong>EXPLANATION:

CARBON dioxide (CO2) is an IMPORTANT heat-trapping (greenhouse) gas, which is released through human activities such as DEFORESTATION and BURNING fossil fuels, as well as natural processes such as respiration and volcanic eruptions.

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ong>Answer:

Isotopes are atoms with the same number of protons but differing numbers of neutrons. Isobars are atoms of DIFFERENT chemical elements having equal VALUES for ATOMIC mass. Isotopes have the same atomic number.

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HEAT the sugar solution

ong>Answer:

bye bye

So JAO ab SAB log XD

ong>ANSWER:

heat the SOLUTION the sakt will GET evaporated and SUGAR will get deposited..

by fractional distillation

Explanation:

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Unbalanced Equation: NH₃ + Cl₂ → NCl₃ + HCl

Balanced Equation: NH₃ + 3Cl₂ → NCl₃ + 3HCl

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ong>Answer:

. Energy (be) the ability do work. Energy (be) everywhere nature,

sunlight, wind, water, plants, and animals. We (use) energy EVERY day. There (be)

two kinds

energy: kinetic and potential. Kinetic energy (be) the energy

motion. Potential energy (be) STORED energy. A good example kinetic and potential

energy (be) a frog leaping. A frog sitting a lily pad (be) an example

potential energy. The frog leaping (be) an example kinetic energy. Different forms

energy

(be): light, chemical, MECHANICAL, heat, electric, atomic and sound energy.

All these forms

energy (can brake) down either kinetic or potential.

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ong>Answer:

Luckily, the plasma membrane turns out to be very well-suited to its job, SALAD oil ... a good basic DESCRIPTION of the structure and behavior of membranes in many cells. ... fluidity means that if you insert a very fine needle into a cell, the membrane ... THANKS to their AMPHIPATHIC nature, phospholipids aren't just well-suited to ..

Explanation:

Luckily, the plasma membrane turns out to be very well-suited to its MEMBRANES in MANY cells. ... FLUIDITY MEANS, phospholipids aren't just well-suited to ..

Explanation:

3Cl2+NH3→NCl3+3HCl.

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ong>Answer:

The second osmotic virial coefficients of seven proteins—OVALBUMIN, ribonuclease A, bovine serum albumin, α-lactalbumin, myoglobin, cytochrome c, and catalase—were measured in salt solutions. Comparison of the interaction trends in TERMS of the dimensionless second virial coefficient b2 SHOWS that, at low salt concentrations, protein–protein interactions can be either attractive or repulsive, possibly DUE to the anisotropy of the protein charge distribution. At high salt concentrations, the behavior depends on the salt: In sodium chloride, protein interactions generally show little salt dependence up to very high salt concentrations, whereas in ammonium sulfate, proteins show a sharp drop in b2 with increasing salt concentration beyond a particular threshold. The experimental phase behavior of the proteins corroborates these observations in that precipitation always follows the drop in b2. When the proteins crystallize, they do so at slightly lower salt concentrations than seen for precipitation. The b2 measurements were extended to other salts for ovalbumin and catalase. The trends follow the Hofmeister series, and the effect of the salt can be interpreted as a water-mediated effect between the protein and salt molecules. The b2 trends quantify protein–protein interactions and PROVIDE some understanding of the corresponding phase behavior. The results explain both why ammonium sulfate is among the best crystallization agents, as well as some of the difficulties that can be encountered in protein crystallization

the image formed by a CONCAVE LENS is always virtual, erect and smaller in SIZE than the OBJECT.

The compound that is used in nuclear reactors as protective shields and control rods is Metal Borides (A)

satellites have a circular (or elliptical) orbit at a height of 250–2000 km from the Earth surface.

• According to the UNION of Concerned Scientists (UCS), which maintains a database of active satellites in orbit, as of April 1, 2020, there were a TOTAL of 2,666 satellites in Space, of which 1,918 were in low Earth orbit (LEO).

ong>ANSWER:

(c) 0 is the correct answer

ong>ANSWER:

we KNOW that molarity=given moles of SOLUTE÷total volume of solution in liters ,

0.1=n solute÷500/1000

0.1=n solute/0.5l

0.1×0.5=n solute

0.05moles=solute

now WEIGHT of solute =give moles ×gram atomic MASS of solute

=0.05×180(gram atomic mass of glucose)

=9ml of gulcose

ong>Answer:

 2K+ + 2e- → 2K (potassium metal at the (-)cathode). 2Cl- - 2e- → Cl2 (chlorine gas at the (+)anode). ... CHLORIDE ions LOSE ELECTRONS (OXIDATION) to form chlorine ATOMS.

ong>ANSWER:

N. T. P

Explanation:

N. T. P STANDS for Network Time PROTOCOL.

ong>Answer:

Answer

Correct option is

B

5.3 g

Weight of Na  

2

​  

CO  

3

​  

=  

1000

Molarity×Mo1.wt.×V

​  

 (where V is in ML).

SUBSTITUTING values in the above equation, we get-

Weight of Na  

2

​  

CO  

3

​  

=  

1000

0.1×106×500

​  

=5.3 g.

Explanation:

ong>Explanation:

The SN2 reaction - A Nucleophilic Substitution in which the Rate Determining Step involves 2 COMPONENTS. -SN2 reactions are BIMOLECULAR with simultaneous bond-making and bond-breaking STEPS. -SN2 reactions do not PROCEED via an intermediate. -SN2 reactions give INVERSION of stereochemistry at the reaction centre.

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ong>Answer:

The SN1 reaction - A NUCLEOPHILIC Substitution in which the Rate DETERMINING Step involves 1 COMPONENT. -SN1 reactions are unimolecular, proceeding through an INTERMEDIATE carbocation.

ong>Answer:

Hey mate!

Here's ur answer:-

I guess SULPHUR oxide

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Leaving out the somewhat ridiculous and sometimes shameful religious slant towards this question, you would think that the purpose of humans is to find ways to work cooperatively to maintain the earth and its RESOURCES so that all of us have clean water and AIR, comfortable housing and clothing, ADEQUATE healthcare, and equal OPPORTUNITIES for work and education, and amenities such as transportation, communication, entertainment, and recreation. We should be able to do all this without polluting or spoiling the earth, which is, of course, the mother of all of us.

ong>Answer:

It is given that:

KH= 1.67 × 108Pa

PCO2 = 2.5 atm = 2.5 × 1.01325 × 105Pa

= 2.533125 × 105Pa

According to HENRY's law:

PCO2 = KHX

⇒ X = PCO2 / KH

= 2.533125 × 105 / 1.67 × 108

= 0.00152

We can write,

[SINCE, is negligible as compared to]

In 500 mL of soda water, the volume of water = 500 mL

[NEGLECTING the amount of soda present]

We can write:

500 mL of water = 500 g of water

=500 / 18 mole of water

= 27.78 mol of water

Now, nCO2 / nH2O = x

nCO2 / 27.78 = 0.00152

nCO2 = 0.042 mol

Hence, quantity of CO2 in 500 mL of soda water = (0.042 × 44)g

= 1.848 g

Explanation:

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ong>Answer:

Answer : 6.022 X 1023 NUMBER of N2 molecules. Thus, mass of 6.022 × 1023 number of N2 molecules is 28g.

Explanation:

COMPOUNDS are MADE of two or more atoms of different elements, such as water (H2O) and methane (CH4). ... Molecules of compounds have atoms of two or more different elements. For example, water (H2O) has THREE atoms, two hydrogen (H) atoms and one oxygen (O) atom.

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ong>Answer:

aaliya LAKH kalpit pyala isliye ALAG

Ooohhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhoooooooo

ong>Answer:

VITAMIN B3 is necessary for SYNTHESIS of NADH2.

Explanation:

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Explanation:

Transcription

Transfer of information from molecule of DNA to m-RNA is CALLED Transcription.

Hope this helps UH.

1.M.Com

2.IAS

3.CII

4.MLC

5.FYI