Explore topic-wise InterviewSolutions in .

(a) Na2SO4 + BaCl3 ---> 2NaCl + BaSO4 X is Sodium Y is Barium Sulphate

(b) Double displacement reaction and precipitation reaction

2,2,3 will be the balancing coefficients. So,sum =3+2=5.

Correct Ans = M3N2.

Please like my answer...

There are many ways to prevent rusting of Iron:

Galvanization

Galvanization is a process in which the Iron sheets are coated with a layer of Zinc which prevents rusting. Zinc gets oxidized more readily than Iron. So, the Iron remains protected.

Painting

Painting the Iron surface will create a barrier between the Iron and the atmosphere, which will protect the Iron from rusting.

Electroplating

Iron sheets can be electroplated with a metal which is more reactive than Iron, so that instead of the Iron getting oxidized, the other metal gets oxidized (because it is more reactive).

Bluing

Bluing is a useful technique which offers limited protection against rust for small steel items. The term “bluing” comes from the blue-black appearance of the finish when using this technique. Blueing is often used in firearms manufacture to provide a degree of corrosion resistance. It’s also used in fine clocks and other metal work.

Bluing is accomplished by immersing the steel parts into a solution of potassium nitrate, sodium hydroxide and water.

mass of the soda is 153mg/L...

Mass of the soda is 153mg/L

Atomic mass of nitrogen is 14 AMUso one mole of nitrogen atom contains 14 grams of Nitrogen

that's why. 0.5 * 14= 7 gramsthe 0.5 moles of nitrogen contain 7 grams

option B is the answer.We should know that S orbitals hold electronsmoretightly to nucleus than P orbitals . This implies that S orbitals are effectivelymore electronegative. Now, insp2carbon the character of each orbital has 33% of s orbital characteristics whereas in eachsp3orbital s character is 25% .

thanks

option B ,it is sp2

Freezing-point depression is the decrease of the freezing point of a solvent on addition of a non-volatile solute. Examples include salt in water, alcohol in water, or the mixing of two solids such as impurities into a finely powdered drug. The freezing point Tf of a solution of a nonvolatile solute is lessthan that of the pure solvent. The change in freezing point DeltaTf (also called the freezing point depression, Td) is given by:Delta Tf = (Tf of pure solvent) - (Tf of solution)

1)Cao quick lime

2) ca(oh)2

3)Definitionofmilk of lime. : a suspension of calcium hydroxide or hydratedlimein water — compare limewater

4)Limewater is the common name for a diluted solution of calcium hydroxide. Calcium hydroxide, Ca(OH)2, is sparsely soluble in water (1.5 g/L at 25 °C). Pure limewater is clear and colorless, with a slight earthy smell and an alkaline bitter taste of calcium hydroxide.

5t7yzfatsofuofurpufuc

Slaked limeis chemically calcium hydroxide, and its chemical formula is Ca(OH)2. It is a white coloured solid which is obtained whenwateris added to calcium oxide (CaO).Lime wateron the other hand is a saturated solution ofslaked limeinwater.

1

2

Whitewash, or calcimine, kalsomine, calsomine, or lime paint is a type of paint made from slaked lime (calcium hydroxide, Ca(OH)2) and chalk calcium carbonate, (CaCO3), sometimes known as "whiting". Various other additives are sometimesused

hit like if you find it useful

1.00 L of the 1.00 M solution contains 1.00 mole of NaNO3 and this is 84.994 g.

The total mass of the solution is this:

1000 cm^3 times 1.25 g/cm^3 = 1250 g

How much water is in the solution:

1250 g minus 85.0 g = 1165 g

molality:

1.00 mol / 1.165 kg = 0.86 m

I rounded it to two sig fig, which seemed appropriate. You may include more if you wish. I also rounded off the 84.994 to 85 for convenience in subtraction

A fuel is any material that can be made to react with other substances so that it releases energy as heat energy or to be used for work

The fraction of silver in each of the compounds is:

Ag/AgCl = 0.7529

Ag/AgBr = 0.5746

The fraction of silver in the mixed sample is 0.6094 therefore, if we let x = the fraction of the sample that is AgCl and (1-x) is the fraction of the sample that is AgBr, then:

x(0.7529) + (1-x)(0.5746) = 0.6094

Solving for x:

x = 0.1949 or 19.49% AgCl in the sample.

The fraction of silver in each of the compounds is:

Ag/AgCl = 0.7529

Ag/AgBr = 0.5746

The fraction of silver in the mixed sample is 0.6094 therefore, if we let x = the fraction of the sample that is AgCl and (1-x) is the fraction of the sample that is AgBr, then:

x(0.7529) + (1-x)(0.5746) = 0.6094

Solving for x:

x = 0.1949 or 19.49% AgCl in the sample.

this is an example of double displacement reactionas two ions are displaced from each of the compound

Mass of Ag= 60.94%Mass of cl and Be=(100-60.94)%=39.06%

Brownian movementormotion,zigzag, irregular motion exhibited by minute particles of matter when suspended in a fluid. The effect has been observed in all types of colloidal suspensions )—solid-in-liquid, liquid-in-liquid, gas-in-liquid, solid-in-gas, and liquid-in-gas. It is named for the botanist Robert Brown who observed (1827) the movement of plant spores floating in water.

Brownian movementhas been explained to be due to the unbalanced bombardment of the particles by the molecules of thedispersionmedium (water in most cases). This is deducted sinceBrownianmotion has a stirring effect which does not permit the particles to settle, therefore stabilizing the sol!

Brownian motion or pedesis is the random motion of particles suspended in a fluid resulting from their collision with the fast-moving molecules in the fluid

What is thecauseofBrownian motion in colloidalparticles? It iscausedby themovementof the water molecules, they are constantly hitting thecolloidparticles and jostling them about.

What is thecauseofBrownian motion in colloidalparticles? It iscausedby themovementof the water molecules, they are constantly hitting thecolloidparticles and jostling them about.

it is caused by movement of particle in water.....

What is thecauseofBrownian motion in colloidalparticles? ... It iscausedby themovementof the water molecules, they are constantly hitting thecolloidparticles and jostling them about

There are no strict boundaries on the size of colloidal particles, but they tend to vary between10^-9mto10^-6m in size

no

Solid Aerosol – When the dispersed phase is solid. Examples include smoke

Here mass of N2 is 30kg so moles of N2 will be 30*1000/28 = 1071 moles

now mass of H2 is 10kg so no. of moles = 10*1000/2 = 5000moles

the balanced reaction of N2 and H2 forming NH3 is N2 +3H2 → 2NH3

so for 1 mole of N2 3 moles of H2 is required here 1071 moles are there.. so H2 moles required are 1071*3 = 3214

and no. of moles of NH3 formed is 2*(1071) = 2142 moles so, H2 moles will still be there.. after thr complete consumption of N2. remaining moles of H2 = (5000-3214) = 1786 moles

so , the limiting reagent is N2.

Batteries have three parts, an anode (-), a cathode (+), and the electrolyte. The cathode and anode (the positive and negative sides at either end of a traditional battery) are hooked up to an electrical circuit. The chemical reactions in the battery causes a build up of electrons at the anode.

The calorific value of wood is low. Thus,to produce sufficient amount of heat,we need to burn a large quantity of wood. Burning of wood produces a lot of smoke and harmful gasseswhich pollute the air. Wood does not burn completely, it produces a lot of residue in the chulha,which is very harmful.

There are three states of matter1) solid 2)liquid 3) gas

1)solid2) liquid3)gas

There are five known phases, orstates, of matter: 1. Solids, 2. Liquids, 3. Gases, 4. Plasma and 5. Bose-Einstein condensates.

Proteins are made from long chains of amino acids. Amino acids are the subunits, or links, that compose a protein chain. All protein molecules are built from these subunits

please read ques carefully.

Stock Notation :

7778-50-9.

K2Cr2O7 = K2Cr2(V|)O7 ....

As oxidation of Cr is 6 ....

in case of illness the main function of body get distubed so nourishing food is required because it has all nutrients

because ,if will get sick means the pathogens are entered into our body .

so we may get sick . For fighting against the pathogens we should take bland and nou

Silicon carbide is covalent solid which is a subtype of crystalline solid .

It is covalent solid since the atoms of silicon are connected with carbon through covalent bonds tetrahedrally.

by this process of nomenclature the name will be ethyl phenyl ether

since , C2H5O- ... is a substituents so, it is named as ethoxy

and here it is connected with benzene..so, the name will be ethoxy-benzene.

Thank you

Ans :- three types

Types of glass. soda-lime glass, lead glass and borosilicate glass. Thesethree typesof glass make up around 95 percent of the cullet glass used in the production process. The remaining 5 percent of glass is special-purpose glass.

single bound double bound triple bound

The packing efficiency of the body-centred cubic lattice (bcc) is 68%.

12)

1.coke2.coal gas3. coal

Electrical conductivity increases with increase in temperature.