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Let the molecular mass of compound be 'X'.

Atomic mass of sulphur- 32gatomic mass of 2 sulphur atoms= (32*2)g

since 0.032 % sulphur is present in the given compound,

percentage of sulphur * total molecular weight of compound = weight of sulphur in compound.0.032 % of X = 32*2

(0.032 / 100) * X = 64 X = (64 * 100)/ 0.032X = 2 * 10^5 g

The molecular weight of the 200000 u

(D) is correct option

Washing sodais a chemical compound with theformulaNa2CO3, known as sodium carbonate, and it’s a salt of carbonic acid. Some use washing soda to make homemade laundry detergent, to clean especially in hard water, and some even use it as a laundry additive to soften water. Water which is rich in minerals like magnesium and calcium, is known as hard water. Hard water can affect the cleaning power of your detergent, but washing soda can bind to minerals in water allowing homemade detergents to better-absorb into fabric fibres and get on with the cleaning. Washing soda should not be confused with baking soda, even though chemically they are closely related.

Na2co3. 10H2o is chemical compound of washing soda

Naphthalene balls undergo sublimation due to which it converts directly into vapours and disappear into air without leaving any solid. (b) The particles of perfume diffuse rapidly into the air and its smell can be felt while sitting several metres away

napthalene balls converts into vapourwithout living solid

due to sublimation it convert into direct vapors

naphthalene ball disappear sublimation it convert into solid to vaporization without going in the state of liquid that's why I can't convert into liquid form it directly convert into my sweet can't leave any solid material you can leave naphthalene ball for sometime or there is it convert into vapour without leaving a solid substance example example just like water as some water on table and leave sometime it convert into vapour without leaving any liquid form due to you due to it convert with the prices of vaporization vaporization just like when was this season was was this depend on humidity temperature table temperature room temperature how much faster trip your price just like an app clean ball

Naphthalene ballsundergo sublimation due to which it converts directly into vapours anddisappearinto air without leaving any solid

The perfect example demonstrating this is the electrolysis of water.If we take some water in a beaker and add sulphuric acid to it then it becomes acidulated water and a great conductor of electricity.Then we pass electric current through them and we see that one test tube has more space than the other.This proves that water has 2 parts of hydrogen and 1 part of oxygen.Oxygen is collected at anode and Hydrogen at Cathode. 2H₂O -------------------> 2H₂ + O₂

In fig. Gas A is hydrogen and gas B is oxygen.

Water droplets form on the outer surface of the container containing a cold substance due toCondensation.The temperature of the container is cold enough to cool down the water vapor in the surrounding air, so it turns from gaseous to liquid state. Therefore, drops form more steadily during warm weather than cold weather.

Condensation is the basic transformation of a substance from gas to liquid. All air in the atmosphere contains some degree of water vapor. If the air is cooled past the dew point of water, which depends on pressure and concentration, condensation will occur. Condensation will occur more easily in saturated air than dry air.

Inert pair effect. Theinert pair effectis the tendency of thetwoelectrons in the outermost atomic s-orbital to remain unionized or unshared in compounds of post-transition metals. ... As a result, theinert pairof ns electrons remains more tightly held by the nucleus and hence participates less in bond formation .

initially work done is 120000*2000final work done is 120000*.004now,so work done is 240000000-480 answer is 239999520

work done=pdVwork done=1.2*10^5(2000-0.004)=1.2*10^5(1999.996)=2399*10^5J

wavelength of light =5800*10^10mfrequency is given by=c/wavelength3*10^8/5800*10^-103*10^8/58*10^-80.05*10^16wave number is reciprocal of wavelengthwave number =1/wavelength=1/5800*10^-10=10^10/5800=0.017*10^8m^-1

Cu(s) --> Cu+2 + 2e- Eo = 0.337

E= Eo + {(RT)/(nF)}ln[Cu+2]

[Cu+2] = 0.0400M

E= 0.337 + {(8.314x298)/(2x96485)}ln(0.0400)

E= 0.297

Xylem is the plant tissue which transports food material or minerals from root to tip of the plant in upward directionfour elements are :

tracheidsxylem vesselsxylem parenchymatracheae

1) The main function of xylem is to carry water and mineral salts upward from the root to different parts of shoots .

ii) marble is not an element

the correct answer is 4

It shows carbon familythanks

The two ways by which the physical state of matter can be changed by the following two methods -

By increasing or decreasing the temperature.

By increasing of decreasing the pressure.

Bayer’s process is used to obtain pure aluminium oxide from bauxite ore.

The bauxite ore is concentrated by chemical separation. Bauxite contains impurities like iron oxide and silica.

The bauxite ore is powdered and heated with sodium hydroxide under high pressure in the furnace.

The aluminium oxide present in bauxite reacts with sodiumMetaaluminate. Silica reacts with sodium hydroxide to form soluble sodium silicate.

The basic iron oxide in the gangue remains unaffected, separated by filtration.

The filtrate containing sodium meta aluminate and sodium silicate is stirred with a little aluminium hydroxide to induce precipitation of aluminium hydroxide

Aluminium hydroxide is then filtered, washed with water, dried and heated to get pure aluminium oxide (alumina)

1) NaOH2) Aspirin

E = hc/wavelength = 6.63×3 × 10^(-34+8)/45×10^-9)

E = 4.42 × 10^-18 J

Number of orbitals in the nth shell = n2

Therefore, the number of orbitals for n = 4

= 42

= 16

If all the orbitals are filled then the total number of electrons = 16 x 2 = 32.

Now, in an orbital two electrons have opposite spins, therefore number of electrons with ms= -1/2 = 16.

Argon has the atomic number 18 and the electronic configuration 1s22s22p63s23p6The valence shell configuration is 3s23p6In the p orbital , Angular momentum L has value =1mlvalues are -1, 0 , 1 corresponding to 2 electrons each[ 2 electrons with ml=-1 value, 2 electrons with ml=0 and two electrons with ml=1]{Total =6 electrons in the p orbital}Hence there are 2 electrons in Ar which have mlvalue =0

Atomic radius in decreasing order.. Mg>Al>Be>B

You have already provided the solution.

Thanks

Answer:-(A)Copper

Reason:-The solution of dilute HCl, dilute HNO3, ZnCl2 and H2O can be kept in the container made of copper. Since copper is a less reactive metal and is placed below the hydrogen in activity series. Hence it does not react with HCl, HNO3 ZnCl2 and H2O. While aluminium is highly reactive metal and can reacts with these solutions

C is correct answer

option B , is incorrect.

Fluorine, though higherthan chlorinein the periodic table, has a very small atomic size. This makes the fluoride anion so formed unstable (highly reactive) due to a very high charge/mass ratio. ... As a result,fluorinehas anelectron affinity less thanthat ofchlorine.

Hence answer will be Aluminium.

N: -2 → +2 (a change of +4) (times 2 because there are 2N’s)

Cl: +5→ -1 (a change of -6)

Find the L.C.M. of change.

24

Insert the suitable stoichimetric coefficients:

3N2H4 + 4ClO3- → 6NO + 4Cl-

Insert H2O to whichever side that is oxygen deficient and then insert H+ to whichever side that is hydrogen deficient:

3N2H4 + 4ClO3- → 6NO + 4Cl- +6H2O

I have not understood...plz solve in easy way..by ion electron method. step by step.

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The process of drop of ink spread in a beaker of water is known as "diffusion"

chair,air,lemon water, almond

part 1

Part 2

spontaneous, option (a)

As given process expanded isothermally means at constant temperature

ΔT = constant

We known that the internal energy of gases depend on the temperature as we increases the temperature the kinetic energy of molecules increases that increases the internal energy of molecules.

Therefore, the internal energy of gases also remained constant at constant temperature

So for given isothermal process

ΔE = 0