Explore topic-wise InterviewSolutions in .

Frenkel defectis shown by ionic substance in which there is a large difference in the size of ions, forexample, ZnS, AgCl, AgBr and AgI shows this effect due to small size of Zn2+and Ag+ions. Forexample, in NaCl there are approximately 106 Schottky pairs per cm3 at room temperature.

Dark coloured bottles interrupt the path of light such that light cannot reach silver chloride in the bottles and its decomposition is prevented. It is known that silver chloride decomposes to silver and chlorine in the presence of light.

The answer is ferrous ammonium sulphate which is not a complex compound

The answer is potassium Ferrocyanide which is not a complex compound .

ok

Balanced equation:3BaCl2+ Al2(SO4)3→ 3BaSO4+ 2AlCl3

1)Answer:Magnesium ribbon mustbe cleanedbefore burning in air so that the layer ofmagnesiumoxide (which is formed due to reaction ofmagnesium with air) can be removed in order to get the desired chemical reaction.

it is because there is oxide layer on magnesium which must be removed ,otherwise it will react very slowly

Magnesium ribbon be cleanes before burning because ribbon clean from small particles of sand,etc. So magnesium speedly contact with oxegen when burning

molar mass of 142 sodium sulphatehence no of moles=amount given/molar mass=10/142=0.07moles

what is the mass?not the no. of moles..

the correct answer is 2

a) 2Zn(s)+2AgNO3(s) - Zn[NO3]2+2Ag

cosA/(1+sinA) + (1+sinA)/cosA = (cosA*cosA+sinA*sinA+2sinA+1)/((1+sinA)cosA) = (2+2sinA)/((1+sinA)cosA) = 2(1+sinA)/((1+sinA)cosA) = 2secA

A reaction occurs spontaneously if TΔS > ΔH and both ΔH and ΔS are + ve

Benzene will be converted in benzene sulphonic acid via electrophilic addition reaction. In this reaction active species is SO3 and also the electrophile.

Ants are pretty “flat” insects; I'm going to assume a very rough estimate of a 3:1 ratio of length to height. So if the ant is 10 mm long, then the height might beabout 3.3 mm

Uses of chlorine :1.Chlorine is commonly used as anantiseptic and is used to make drinkingwatersafe and to treat swimming pools. 2.Large amounts of chlorine are used in manyindustrialprocesses, such as in theproductionof paper products, plastics, dyes, textiles, medicines, antiseptics, insecticides, solvents and paints.

A solution conducts current when positive and negative ions are randomly dissolved in it. Pure water doesn't have enough ions but when you add HCl you add a strong electrolyte so, after the addition, solution can conduct electricity very well.

Due to the absence of enough charged particles in distilled water it does not conduct electricity. However presence is salts can make water a good conductor

Magnesium chloride a ionic compound is formed by the transferring of electrons.Magnesium having 2 valence electron and chlorine having 1 valence electron are interchanged with each other so the resultant compound is the MgCl2.

It is an ionic compound and due to the presence of free electrons it conducts electricity.

Magnesium chloride a ionic compound is formed by the transferring of electrons.magnesium having 2 valence electron and chlorine having 1 valence electron are interchanged with each other so the resultant compound is the MgCl2.

Also in order of being an ionic compound and the due the presence of free electrons it conducts electricity.

Ammonia will diffuse faster if both gases are at equal temperatures and same volume, which makes ammonia is less denser

The short explanation is that at equal temperatures both gases have equal kinetic energies. For the kinetic energy of the gases to be the same, the lighter (lower mass) gas particles must be moving more quickly.

The molar mass of ammonia is: 17.04The molar mass of HCl is: 36.46

Faster moving gas particles will diffuse (spread out) more quickly.

plz tell direct ans

please see the first paragraph the ans is ammonia is less denser

ammonia - 0.73kg/cubed mhcl - 1.49 kg/cubed m

Oxygen is the most abundant element in Earth's crust.

Please hit the like button if this helped you

thanks

Fe--- Fe2O3.xH2OCu--- CuO and Cu2OAl--- Al2O3Ag--- It forms unstable oxide film. ZBut it gets tarnished due to the formation of Ag2S

Fe.....Fe203.xH20Cu....CuO & Cu20Al....Al203Ag...it forms unstable oxide film. ZBut it gets tarnished due to the formation of Ag2S

I suspect the right answer is hydrogen. It’s found in nearly all organic compounds and in a large number of inorganic compounds.

hydrogen is the right answer

Unsaturated compounds burn with a sooty flame and saturated with a clear flame

need in a little elaborate form

The properties of solution that only depends on the number of source particles are called Collegative Properties

In chemistry,colligative propertiesarepropertiesof solutions that depend on the ratio of the number of solute particles to the number of solvent molecules in a solution, and not on the nature of the chemical species present. ... The wordcolligativeis derived from the Latin colligatus meaning bound together.

Inchemistry,colligative propertiesare properties ofsolutionsthat depend on the ratio of the number of solute particles to the number ofsolventmoleculesin a solution, and not on the nature of the chemical species present.[1]The number ratio can be related to the various units forconcentrationof solutions, for example,molarity,molality,normality (chemistry), etc. The assumption that solution properties are independent of nature of solute particles is only exact forideal solutions, and is approximate for dilute real solutions. In other words, colligative properties are a set of solution properties that can be reasonably approximated by assuming that the solution is ideal.

Colligative property are those properties which depend upon the number of particles of solute contained in a known volume of a given of a given solvent and are independent of the chemical composition or nature of solvent.

The properties which only depends on the amount of substance irrespective of the nature of the substance

Limonite- FeO(OH) · nH2OZincite- ZnODolomite- CaMg(CO3)2China clay- (Al2O3(SiO2)2(H2O)2)

Amicroorganism, ormicrobe,[a]is amicroscopicorganism, which may exist in itssingle-celledform or in acolony of cells.They can be seen only under microscope and cannot be seen by naked eyes

thanks

Ozone (O3) is the most powerful oxidant used in water purifications.

It can oxidize metals (manganese,sulphur,iron ) into insoluble particles and removal from water.

The removal of unwanted taste and odour is also treated by ozone oxidant.

Ozone is natural substance and when it used for water purification it readily degrade back o2 leaving no trace.

thanks

In my reference the answer is calcium oxychloride

Concentration of a solution can be expressed in terms of Molarity. Molarity can be calculated in the following way:

Molarity = moles of solute/ liters of solution

Find moles of 2.65 g of Na₂CO₃ (molar mass = 106)

Moles = mass/molar mass

= 2.65 g / 106 = 0.025 moles

Molarity of this solution:

Molarity = 0.025 moles / 0.25 liters (250ml in liters) = 0.1 M

We can use the molarity calculated to find the moles ofNa₂CO₃ in 10ml solution:

If molarity = moles of solute/ volume in litersThen ; Moles = volume in liters x Molarity

Moles ofNa₂CO₃ in 10ml solution = 10/1000× 0.1M = 0.001 moles

We can find the new molarity of the solution that has been diluted to 1 liter:

The volume = 1 litermoles = 0.001

Molarity = moles of solute/ volume in liters = 0.001moles/1 liter. = 0.001M

The concentration therefore = 0.001M

Concentration of a solution can be expressed in terms of Molarity. Molarity can be calculated in the following way:

Molarity = moles of solute/ liters of solution

Find moles of 2.65 g of Na₂CO₃ (molar mass = 106)

Moles = mass/molar mass

= 2.65 g / 106 = 0.025 moles

Molarity of this solution:

Molarity = 0.025 moles / 0.25 liters (250ml in liters) = 0.1 M

We can use the molarity calculated to find the moles ofNa₂CO₃ in 10ml solution:

If molarity = moles of solute/ volume in litersThen ; Moles = volume in liters x Molarity

Moles ofNa₂CO₃ in 10ml solution = 10/1000× 0.1M = 0.001 moles

We can find the new molarity of the solution that has been diluted to 1 liter:

The volume = 1 litermoles = 0.001

Molarity = moles of solute/ volume in liters = 0.001moles/1 liter. = 0.001M

The concentration therefore = 0.001M

Molality is a property of a solution and is defined as the number of moles of solute per kilogram of solvent.

The SI unit for molality is mol/kg

0.05

how

rita and arya brought 254 apple together

rita = 230arya= 24total = 254 apple all together

Total apples bought by Riya and Arya will be 254

254 apples they brought together

Rita brought 230 apples and Arya brought 24 apples.So total apples = 230+24=254

The apples they together have 254 apples It was too easy But thanks for asking I hope it may help you.

254 apples will be altogether

correct answer is 254 apple🍎

254 they have 254 apples altogether

Total apple= Rita's apples + Arya's apples = 230+24=254 apples

-Molality, also called molal concentration, is a measure of the concentration of a solute in a solution in terms of amount of substance in a specified amount of mass of the solvent.- so firstly we have to calculate the moles of glucose10*1/180.16 = 0.0555 ( as the molar mass of glucose= 180.1559)These are dissloved in 90 g of water.first convert mass into kilogram =90/1000= 0.090 kg0.090 kg water = 0.0555 moles of glucoseso 1 kg of water=1*0.0555/0.090 = 0.6166 moles of glucoseround about of 0.6166 will be 0.617 which is our answer

Molarity is moles/volume(l)now 250 ml.is 0.25 lhencemoles =0.25*0.5=0.125 moleshencemoles is weight taken/molecular masshenceweight taken will be 58.5*0.125=7.315 gm

Well,w/v≡Mass of soluteVolume of solution, we should get over7⋅gof silver chloride.

Explanation:

And thusmass of silver nitrate=16.9%×50⋅mL=8.45⋅g.

And this represents a molar quantity of8.45⋅g/169.87⋅g⋅mol−1

=0.0497⋅mol, with respect toAgNO3.

Likewisemass of sodium chloride=5.8%×50⋅mL=2.90⋅g.

And this represents a molar quantity of2.90⋅g/58.44⋅g⋅mol−1

=0.0497⋅molwith respect toNaCl.

Clearly the reagents are present in 1:1 molar ratio. The reaction that occurs in solution is the precipitation of a curdy white mass ofAgCl(s), i.e. and we represent this reaction by the net ionic equation.....

Ag++Cl−→AgCl(s)⏐↓

Of course the complete reaction is....

AgNO3(aq)+NaCl(aq)→AgCl(s)⏐↓+NaNO3(aq),

i.e. sodium nitrate remains in solution and can be separated (with effort) from the precipitate.

And given thestoichiometry, we gets,

0.04974⋅mol×143.32⋅g⋅mol−1=7.11⋅g.

Of course a material such as silver halide would be very hard to isolate.

Particle size is very small; it is likely to clog the filter, and filter very slowly; and moreoverAgClis photoactive, and would decompose under light.