Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

Gay-Lussac's Law: The Pressure TEMPERATURE Law. This law STATES that the pressure of a given amount of gas HELD at constant volume is directly proportional to the Kelvin temperature.

Explanation:

In molecular biology, QUANTITATION of nucleic acids is commonly performed to DETERMINE the average CONCENTRATIONS of DNA or RNA present in a mixture, as well as their purity. Reactions that USE nucleic acids often require particular amounts and purity for optimum performance. To date, there are two MAIN approaches used by scientists to quantitate, or establish the concentration, of nucleic acids (such as DNA or RNA) in a solution. These are spectrophotometric quantification and UV fluorescence tagging in presence of a DNA dye.[citation needed]

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Chack Attecment

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A SALT that is often formed by the reaction of carbon dioxide CO2 with another chemical substances

you can see i send you pic you can see the image of carbonate it is helpful for study you can EASILY learn the QUESTION of carbonate okk

ANSWER:

Atomic number is the number of PROTONS present in the nucleus of the atom.

While MASS number is the SUM of number of protons in the nucleus and number of neutrons in the nucleus.

In one atom of ammonia,

Number of Electrons = 10

Number of Protons = 10

Number of NEUTRONS = Mass Number - ATOMIC Number

= 17 - 10

= 7 Neutrons.

Given---

Mass of Ammonia = 1.7 grams.

MOLECULAR mass of Ammonia = 17 grams.

Number of ATOMS = (Mass/Molecular mass) × Avogadro's Number(NA)

= (1.7/17) × Avogadro's Number

= 0.1 × Avogadro's Number

= 0.1 Na

∵ one atom of Ammonia contains 7 Neutrons.

∴, 0.1 Na ---------------------------------- 7 × 0.1 Na

= 0.7 Na

= 0.7 × Na

Since Na = 6.022 × 10²³

Thus, Number of Neutrons = 0.7 × 6.022 × 10²³

= 4.2154 × 10²³ Neutrons.

what is that do you can

Explanation:

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molarity is no of moles of solute in 1 L of solution ( solute+ SOLVENT) here VOLUME of solution is in litre. and volume expands and the TEMPERATURE RISES while molality is the no moles of solute dissloved in mass of 1 kg of solvent.

and mass does not depends upon temperature. hence molarity depends on temperature while molality does not.

ANSWER:

This means that 1 MOLE of hydrogen atoms will WEIGH 1.008 grams. That said, to find the mass of ONE ATOM, we need to convert from moles to atoms as FOLLOWS: 1.008 grams/mole Hydrogen * (1 mole/6.022x1023 atoms) = 1.67 x 10-24 grams.

A DESERT cooler cools BETTER on a hot DRY day because on a hot dry day temperature is high and humidity is less which helps in better evaporation Due to the higher rate of evaporation it gives better cooling EFFECT.

ANSWER:

zero

Explanation:

as L VALUE for s ORBITAL =0

EXPLANATION:

IAM not a SCIENTIST

...

Answer:

Heated seawater is passed along the surface of a hydrophobic polymer membrane. ... DESALINATION – is a process by which saline water (generally sea water) is CONVERTED to fresh water.

The most common desalination PROCESSES are distillation and reverse osmosis.

The main thermosetting plastics are epoxy resin, melamine formaldehyde, polyester resinand UREA formaldehyde.

Good electrical insulator, HARD, brittle unless reinforced, resists chemicals well.

USED for CASTING and encapsulation, ADHESIVES, bonding of other materials.

CL2(g) + 2KI(aq)-----> 2KCL(aq)+ I2(s)

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MARK ME AS THE BRAINLIEST PLEASE....

ANSWER:

Because of the PRESENCE of MINERAL SALTS in it

Answer:

DUE to the ANOMALOUS expansion of water

Explanation:

Marine life are able to survive because the surface of water in a waterbody is below 0 degree temperature which is in a solid FORM and below that, water REMAINS in LIQUID state which is good for marine life

Answer:

The number of HYDROGEN ATOMS present in 25.6 g of sucrose which has a molar mass of 342.3 g is. (A)22 X 10.

ANSWER:

where is your QUESTION?......

Answer:

the QUESTION states that the solution has 92% ETHANOL by mass

so if the solutions WEIGHS 100gms , it CONTAINS 92gms of ethanol and 8gms of water

no.of moles of ethanol = weight of ethanol / molecular weight of ethanol

molecular weight of ethanol is 46

no. of moles of ethanol is 92/46 i.e 2

no.of moles of water is 8/18 i.e 0.222

mole fraction of ethanol = no.of moles of ethanol / total number of moles

= 2/2.222

=0.90 (approx)

mole fraction of water =1-mole fraction of ethanol

=1-0.9

=0.1 (approx

Answer:

solid- The intracellular FORCE of attraction is very high in solid.

The SPACE between particles is LIKE negligible.

LIQUID - The intracellular force of attraction is high but lower than solid..

Gas - The intracellular force of attraction is very low.

This is the major difference....

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Answer:

Xanthoproteic acid is a noncrystallizable yellow substance DERIVED from proteins upon TREATMENT with NITRIC acid. Nitric acid reacts with

Answer:

Potassium IODATE | KIO3 or IKO3 | CID 23665710 - STRUCTURE, CHEMICAL names, physical and chemical PROPERTIES, classification, PATENTS, ...

if BROMINE WATER is added to a solution of phenol in water. the bromine water is decolourised and a WHITE PRECIPITATE is formed which

Answer:

The correct answer was given: Firdaus17f

There will be 2 series for given question:

12, -24, -48, -96........... to infinity

6, -3, -3/2, -3/4....... to infinity

EXPLANATION:

answer:

answer is 21 ltr

step-by-step explanation:

let a=7x

b=5x

so, the mixture is 7x+5x=12x

when, 9 ltrs drained then

12x-9

then the can is FILLED with b(9x)

so, atq

12x-9=9x

12x-9x=9

3x=9

x=3

so, a present initially =7*3=21

the answer is 21 litre.

ANSWER:

this is your answer if it HELP you the MARK me as BRAINLIEST

Answer:

A decomposition reaction is a type of chemical reaction in which a SINGLE compound breaks down into TWO or more elements or new compounds. These reactions often involve an ENERGY source such as HEAT, light, or electricity that breaks APART the bonds of compounds.

Explanation:

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Chack Attecment

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ANSWER:

VALANCY Of CU is

1. Copper (II) OXIDE . Valacy is 2
2. Copper (I)Oxide. Valancy is 1

ATOMIC radius

empirical: 143 PM

Covalent radius

121±4 pm

Van DER WAALS radius

184 pm...

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ATTRACTIVE intermolucular force is the forces which HOLD a MOLECULE together. For example, the covalent bond, involving sharing electron pairs between ATOMS, is much stronger than the forces present between neighboring molecules...

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Below we'll explore proven strategies and techniques that will, if applied, improve your ability to study and learn chemistry.

•    Review and Study Material Before Going to Class. ...
•    Seek Understanding. ...
•    Take Good Notes. ...
•    Practice DAILY. ...
•    Take Advantage of LAB Time. ...
•    Use Flashcards. ...
•    Use Study Groups. ...
•    BREAK Large Tasks Into Smaller Ones.

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ANSWER:

AMMONIA se fuel banta HAI

Pentose

a monosaccharide with five carbon atoms. PENTOSES are organized into two groups. Aldopentoses have an aldehyde FUNCTIONAL group at position 1. Ketopentoses have a ketone functional group in position 2 or 3. The aldopentoses have three CHIRAL centers... ................

ANSWER:

Carbon - 14 DATING ( also known as RADIOCARBON DATING )

EXPLANATION:

ANSWER:

GASES

EXPLANATION:

ANSWER:

The face-centered cubic (fcc) has a coordination number of 12 and contains 4 ATOMS per unit cell. The body-centered cubic (bcc) has a coordination number of 8 and contains 2 atoms per unit cell. The simple cubic has a coordination number of 6 and contains 1 ATOM per unit cell.

Explanation:

Answer:

The relative NUMBER of atoms of x, y and Z are 2, 1 and 0.5, respectively. ( MOLECULAR mass of the compound is 400 g) Find out. i) The ... PERCENTAGE of of element z = 44 %

ANSWER:

a) co

Explanation:

ANSWER:

NYLON:

Nylon is a generic DESIGNATION for a family of SYNTHETIC polymers, based on Nylon polymers have found significant commercial applications in fabric and FIBERS.

this is because potassium is a metal and has 1 more balanced ELECTRON and its octate is completed so its VALENCY is +1 but chlorine has 1 LESS electron in its octate so its valency is -1

your ANSWER is ACID

(HF) is a WEAK acid

ANSWER:

Can't UNDERSTAND the QUESTION

Answer:

TOMATO - Oxalic ACID

Milk - LACTIC acid

Vinegar - Acetic acid

Ant - FORMIC acid

Lemon - CITRIC acid

ANSWER:

I HOPE this answer will HELP you

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Concentration CELLS work to ESTABLISH equilibrium by transferring electrons from the CELL with the LOWER concentration to the cell with the higher concentration. The ELECTRODE potential difference between the two half-cells can be calculated using the Nernst equation............

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Density of states is given by the NUMBER of available states between E and E+dE (in energy space. in momentum space it's between k and k+dk) per unit VOLUME..........

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ANSWER:

Explanation:

volume of solution containing one EQUIVALENT of an electrolyte is known as equivalent CONDUCTIVITY. ... electrolyte. Its conductance is equal to equivalent conductance, Λ.

Answer:

Explanation:

Gibbs free energy combines enthalpy and entropy into a single value. Gibbs free energy is the energy associated with a CHEMICAL reaction that can do USEFUL work. It equals the enthalpy MINUS the PRODUCT of the temperature and entropy of the system. ... If ΔG is negative, then the reaction is spontaneous

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When ETHANOIC acid reacts with sodium carbonate. The products formed are sodium ethanoate and carbon dioxide. When Ethanoic acid reacts with Sodium HYDROGEN carbonate solution, it forms sodium ethanoate ALONGWITH the brisk effervescence.............

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