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ANSWER:

The mole fraction of CH3OH in an aqueous solution is 0.02 and its density is 0.994gcm-3. Determine its molarity and MOLALITY. =99432+18×y/x=99432+18×49=1.0875M.

EXPLANATION:

MOLE of NAOH=3

WEIGHT of NaOH =3×40g

⇒120g

Weight of solvent =1000g

∴ weight of solution =1000+(3×70)

⇒1120g

∴ VOLUME of solution =11201.110ml

m=3/11201.110×1000

⇒2.9732

Chernobyl,UKRAINE is the most WATER POLLUTED place in the WORLD

ANSWER:

it will CONVERT into ??????????

Answer:

In chemistry, molecular ORBITAL theory (MO theory) is a method for determining molecular structure in which electrons are not assigned to individual bonds between atoms, but are treated as moving under the influence of the nuclei in the WHOLE molecule. In this theory, each molecule has a set of molecular orbitals, in which it is assumed that the molecular orbital wave function ψf may be written as a simple WEIGHTED SUM of the n constituent atomic orbitals χi, according to the FOLLOWING equation

ANSWER:

CH3BR + AgCH3COO ---> CH3COOH + AgCH2

OXIDATION state of H2O in COORDINATION compound is ZERO

The ANSWER is MERCURY.

EXPLANATION:

Evaporation is like some drop of petrol specially in winter EVAPORATES without take heat

Vapourization is like some drop of water evaporates with heat

SUBLIMATION is when solid is directly CONVERTED into liqued

hey BRAINLY user

Here is your answer

The answer is OPTION 4

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Answer:

zn +H20 - zn(oh)2+h2

Explanation:

REACTS with H2O

ANSWER:

+1 is OXIDATION no. of NA

e/m of ELECTRON =1.75 × 10 POWER 11c/g

ANSWER:

there are many compounds you could also se the DIFFERENCE compounds AROUND you like water which has water and hydrogen in a fixed RATIO of 2:3

Answer:

as it is a sublimable substance

it CHANGES to vapour state without changing to liquid from SOLID state

Explanation:

The ENERGY can be obtained with petrol, DIESEL, electricity or CNG. It is converted into energy by the engine of the respective VEHICLE.

Explanation:

on PASSING through ELECTRICITY through three ELECTROLYTIC cells

ANSWER:

MAGNESIUM is a LEAST REACTIVE with WATER

ANSWER:

answer in the ATTACHMENT ☝️☝️☝️

Answer:

4co2 ANS 1

ii 2c2h6

hope it will HELP you

Answer:

4) Negative charge of ONE UNIT and a mass of about 1.67× 10 to the power -27 KG....

Please FOLLOW VIRATANMOL

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ANSWER:

Explanation:

Plastic are not preferred to be natural MATERIAL because of they made up of carbon polymers . they preferred in use because the are cheap in value & can be RECYCLED but only GREAT disadvantage that we can not ELIMINATE or destroy them completely.

ANSWER:

CHEMICAL COMBINATION REACTION

EXPLANATION:

Then during electrolysis of a SOLUTION of agno3 , 9650 COULOMBS of CHARGE pass through the electroplating bath, the mass of SILVER deposited in the cathode

EXPLANATION:

in the electrolysis of ALKALINE water a total of ONE mole of gasses is EVOLVED . The amount of water decomposed is. a) one mole. b)two mole.

Answer:

During the development of seeds in plants that POSSESS this genetic Trait, the nucellar tissue which surrounds the MEGAGAMETOPHYTE can PRODUCE ADDITIONAL embryos (POLYEMBRYONY), which are genetically identical to the parent plant. These nucellar seedlings are clones of the parent.

Answer:

2 MG + O2 ---------> 2MgO

EXPLANATION:

SOLIDS are rigid. gases are not.

gases show fluidity. SOLID not

gases are COMPRESSIBLE. solids are not.

solids have FIXED shape, size and volume and gases not.

solid are hard and gases are not.

Answer:

in Combination reaction TWO or more SUBSTANCES combines to produce a new substance.

And the same thing is happening in the equation given above. That sodium combines with CHLORINE to form sodium CHLORIDE

the equation is not balanced

2Na + Cl2 ---》2NaCl

Answer:

1) Structure of ATOMS......

Explanation:

The study of electric discharge through gases gives valuable information regarding the structure of atoms. This has LED to the discovery of electrons by J. J. THOMSON and later on, to the discovery of X-rays by Roentgen. A discharge tube is an arrangement to study the conduction of electricity through gases.

EXPLANATION:

FORMULA of BLUE VITRIOL is CUSO4

Answer:

EXPLANATION:

Distillation is used for separating a mixture of miscible liquids into its components, when both the components are miscible with each other and the difference in the boiling POINTS of the liquid components is more than 20-25 degree Celsius.

The mixture is heated in a flask until the mixture BOILS, the vapors produced due to boiling of liquid are passed through a CONDENSER, where they are condensed back to the pure liquid which is collected separately

Those liquid MIXTURES can be separated by distillation in which difference in the boiling points of the liquid components is more than 20-25 degree Celsius.

Hope it helps…

Answer:

60% so my MARKS PLEASE RESPONS

ANSWER:

because the particles of WATER have HIGHER KINETIC power

Answer:

The ferrous sulphate crystals are light green in colour. The GAS emitted has the CHARACTERISTIC odour of burning sulphur. On heating, the colour changes from light green to WHITE. On further heating, the white SUBSTANCE changes to dark BROWN solid.

Answer:

Once this is done, all that is needed to solve the equation is to INTEGRATE both sides. The method for solving separable EQUATIONS can therefore be summarized as follows: Separate the VARIABLES and integrate. Example 1: Solve the equation 2 y dy = ( x 2 + 1) dx.

ANSWER:

These are the FIRST 20 ELEMENTS

Explanation:

To balance a chemical equation, start by writing down the number of atoms in each ELEMENT, which is listed in the subscript next to each ATOM. Then, ADD coefficients to the atoms on each side of the equation to balance them with the same atoms on the other side.

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Answer:

Dry ice is the solid form of CARBON dioxide (CO2). It's called "dry ice" because it does not melt like wet ice. Instead, dry ice converts into carbon dioxide GAS. Because dry ice is extremely COLD ( -109°F/-78.5°C), non-toxic, and COMPLETELY dry, it is commonly USED as an expendable refrigerant to ship frozen food or medical products or to cool materials during production. The other major use of dry ice is for dry ice blast cleaning, an effective and environmentally friendly way to clean industrial equipment.

ANSWER:

the OXIDATION STATE of a NO2 is + 4

ANSWER:

125.85 your QUESTION my answer 7932.5 is my answer

Non-metals REACT with oxygen in the air to PRODUCE non-metal oxides. Here are two examples for the non-metals CARBON and sulphur. Non-metal oxides such as sulphur DIOXIDE and nitrogen oxide are responsible for acid RAIN.

ANSWER:

ALPHA PARTICLE is not a FUNDAMENTAL particle.

Answer:

2.1 NA

Explanation:

no.of moles of N = 4.2/14.

{atomic MASS of N = 14}

no.of moles = 0.3

no.of atoms = 0.3 NA

no.of electrons in 1 atom =7

no.of electrons in 0.3 NA atoms = 7 × 0.3

= 2.1 NA

Answer in evolution of gas an UPWARDS arrow and in PRECIPITATE DOWNWARDS arrow

ANSWER:

the answer is SEVENTY EIGHT

Answer:

2 MOLES

Explanation:

if 16 GRAMS of oxygen = 1 mole

then 32 grams of oxygen = 32/16

= 2 moles

ANSWER:

It Can be DONE by MECHANIC I am not a mechanic so i will not DOIT

ANSWER:

MAXIMUM HYDROGEN bonding is observed in DNA

ANSWER:

Chlorine is the ELEMENT having the ELECTRONIC CONFIGURATION of 2,8,7.

Hope it helps.................