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50551.

If two members of a Dobereiner traid are calciumand stroncium, the thirdmember of the triad is: *1)Cesium2)Magnesium3)Barium4)Sodium​

Answer» SODIUM.............
50552.

Draw the structure of oxoacids of H4P2O6 , H3PO3

Answer» ANS is H7P209Explanation:(DRAW the structure of OXOACIDS of H4P2O6 , H3PO3)
50553.

Solubility of AgBr will be minimum in NaBr CaBr2 AgNO3 Why not the last two options

Answer»

NaBr RELEASES ions QUICKLY in its aqueous solition hence COMMON ION effect will be more please mark as brainliest

50554.

Dobereiner's triads is based on: 1)atomic number2)atomic mass3)electron number4)no. of neutrons​

Answer»

tion:ATOMIC MASS is the dobereiner triedI hope understand you....

50555.

Solve this question.. ​

Answer»

9×10^-15Explanation:is it CORRECT

50556.

On the basis o Newlands classification of elements, theproperties of sulphur are similarto those of oxygen becausesulphur is the_ _elementstarting from oxygen. *1)72)83)34)65)Other​

Answer» OPTION B is CORRECT 8 ELEMENTS
50557.

What is a atomicity.....​

Answer» BER of atoms present in the MOLECULES of an element is CALLED ATOMICITY.
50558.

7. Breakdown of C6 H12 O6 into CO2 and H20 is accomplished by the process of a) Photosynthesisb) Respirationc) Precipitationd) Nitrification​

Answer» PRECIPITATION..MARK me as BRAINLEIST
50559.

Lead pencil is made up of-a)leadb) graphite​

Answer» GRAPHITE is the ANSWER
50560.

Put about 2 g soil in a test tube and add 5 mL water to it. Shake the contents of the test tube.Filter the contents and collect the filtrate in a test tube.Check the pH of this filtrate with the help of universalindicator paper.What can you conclude about the ideal soil pH for the growth ofplants in your region?​

Answer»

al pH for the growth of plants is 5.5 to 7.0.Explanation:When the pH of the filtrate is checked with the help of universal indicator paper, the value obtained was 6.Based upon the pH value the nature of the substance is determined EITHER as acidic or basic or NEUTRAL.The substance with pH 1-6 are considered as acidic, 7 is neutral, above 7 it is basic.As the pH of the obtained filtrate is 6, it MEANS that the soil is slightly acidic. If we apply lime to the soil it will become neutral and can be used for PLAT growth.Learn more about such conceptActivity 16.3Check the pH of the WATER supplied to your house using universalindicator or litmus paper.brainly.in/question/11250808Why glass electrode cannot be used for solution of ph above 9.0? brainly.in/question/3683023

50561.

Find the number of molecules in 132 gram of carbon dioxide gas​

Answer»

mm of CO2 = 12+2(16) = 44 gno. of moles of CO2 = GIVEN mass / molar mass = 132 g/ 44 g =3 moles of atoms = 2×3 =6

50562.

Draw the structure of following compound 2-chloro-2-methyl butan-1-ol

Answer» TION:this is the ANSWERPLEASE MARK THE ANSWER AS BRAINLIEST IF IT SATISFIED YOU!THANK YOU
50563.

a solution is prepared by dissolving 1.9 ×10^-2 kg ammonia in 400 g water calculate elevation of boiling point if Kb for water is 0.52K Kg per mole​

Answer»

The equation for boiling-point ELEVATION looks like this ... as Tb−T∘b. The ebullioscopic constant of WATER is EQUAL to 0.512∘C kg mol−1 ... b=0.5305 moles559⋅10−3kg=0.949 MOLAL.

50564.

What is the behavior of ethanol when it reacts with sodium metal?

Answer»

When ethanol REACTS with sodium, sodium ETHOXIDE and hydrogen gas is FORMED. 2Ch3 ch2oh + Na - > 2ch3ch2ona +H2 Please FOLLOW me. ❤️♥️

50565.

PLEASE TELL ME A BIODEGRADABLE POLYMER EXCEPT POLYBETAHYDROXYBUTYRATE-CO- BETAHYDROXYVALERATE.ALSO GIVE ITS PREPARATION.​

Answer»

Polyglycolic ACID polylacticExplanation:

50566.

Why boron halide do not exist as dimer while AlCl3 exist as Al2Cl6?

Answer»

alide does not exists as a diamer but it exists as a polymeric chain. This is because even after the FORMATION of a diamer the valence does not GET satisfied hence it tries to ATTAIN a stable valence shell.Even after the formation of a polymeric chain the octet is not complete but it has 6E in its valence shell.PLZ MARK AS BRAINLIEST.

50567.

Calculate the mass percentage of Na,S and O in Na2SO4.

Answer»

ass of Na2So4 = 23×2 + 32 + 16×4 = 142mass % of Na = 46/142 × 100 = 32.39%mass % of S = 32/142 × 100 = 22.53%mass % of O = 64/142 × 100 = 45.07%hope this would help plz MARK as the BRAINLIEST

50568.

Find the empirical formula.P atoms are present in 2 end face and q atoms is present in centre of body as well as corners of two side face and r atoms present at the centre of each face of the crystal.

Answer»

ddgmfffiaaakgglllylllckkkxxxikkkmww

50569.

2- Convert 2.6 minutes into seconds 3- Define molarity of a solution.4- What is effect of temperature on r5-What does VSPER stand for?5-How many Sigma end pi bond are7- Why is sigma bond stronger than8-What is the nature of Carbon aton9-Why are alkanes called paraffins:What in chromatogranhy?​

Answer»

1)2.6min=156second2)molarity=no.of moles of solute/vol.of solution3)with Increase in temperature rate of reaction also increase4)Valence shell ELECTRON pair REPULSION theory7)Bcz pi bond is formed as a result of lone pair of electrons....which need LESS energy to BREAK so that is why pi bond is weak bindthanku dear HOPE this information will help u

50570.

Plz fastttttttttttttttttttttttttt​

Answer» MARK AS BRAINLIEST EXPLANATION:
50571.

Ladke kaise patana Chahiye???​

Answer» OLI MATE...... ✌✌☺☺☺
50572.

The end product (C) of the following sequence of reaction is: HC = CH +Mế MgBr(1mol) A (1) CO2 ) B HgSO4.H2SO4 5cB(ii) H3O+​

Answer»

The end PRODUCT (C) of the following sequence of REACTION is:CH≡CH+MeMgBr(1MOL)⟶(A) (i)CO 2 (ii)H 3 O ⊕ (B) HgSO 4 /H 2 SO 4 (C)

50573.

"Middle row anamoly" is related with (1) stability of transition metal oxides(3) stability of halogen oxides(2) stability of alkall metal oxides(4) stability of alkaline earth metal oxides​

Answer» MIDDLE row anamoly is related with stability of HALOGEN OXIDES.
50574.

Is o in NO3- is divalent and how

Answer»

no it is not a DIVALENT .........

50575.

Define the rancidity of oil​

Answer»

WHEN OIL IS LEFT IN CONTACT OF AIR FOR A LONG TIME IT BECOMES RANCID.

50576.

Happy Holi guys ❤️❤️❤️ Q- What are conducters (types), insulators, semiconductors (types)(12th chemistry)

Answer»

ics conductors generally MEANS the object that ALLOWS electricity to easily PASS through them . INSULATORS are objects that do not ALLOW electricity to pass through them

50577.

What is the electronic configuration of Nickel and Radium?​

Answer»

Nickel ATOMS have 28 electrons and the shell structure is 2.8.16.2.The ground state electron configuration of ground state GASEOUS neutral nickel is [Ar].3d8.4s2 and the term SYMBOL is 3F4.The element radium (atomic number 88) has the long term electron configuration1s2 2s2 2P6 3s2 3p6 3d10 4s2 4p6 5s2 4d10 5p6 4f14 5d10 6s2 6p6 7s2The electron configuration (short form) of radium is [Rn]7s2 .It's configuration is also 2.8.18.32.18.8.2

50578.

How complex tissue is different from simple tissue...................... Plzzz follow me yrrrrr............ ​

Answer»

Simple TISSUES are made up of only one type of CELLS, which look like each other. On the other hand, complex tissues are made up of more than one type of cells. Parenchyma, collenchymas and are the examples of simple plant tissue whereas XYLEM and phloem are complex tissue.Plzzz FOLLOW me yrrrrr............

50579.

Three moles of an ideal gas are compressed isothermally and reversibly to a volume of 2L. The work done is 2983 id at 22°C. Calculate the initial volume of the gas. 32.8 x 10 kg of nitrogen is expanded isothermally and reversibly at 300 K from 15.15 x 109 Nm when the19293 moles of an ideal gas are compressed isothermally and reversibly to the volume of 2 litre the work done is 2.98 3 kilo joule at 20 degree Celsius calculate the initial volume of the gas ​

Answer»

s two questions it seems. First question is understandable ,but the second has no proper information to solve.First question is solved below.The initial volume of the GAS is : 3 LGiven, number of moles of gas = 3, Final volume of gas = 2LAlso it is GIVEN as isothermal and reversible compressionWork done = 2.983 KJ, Temperature = 22°C = 273+22 = 295 K Now, we know for isothermal reverrsible expansion or compression Work done is given by, W = -2.303nRT log(V2/V1) , where n is number of moles, R is rydberg constant, T is temperature , V2 and V1 are final and initial volume respectively.Now,  USING data:                                                                                     2.983 * 10^3  = - 2.303 * 3 * 8.314 * 295 * log( 2/V1)2.983 * 10^3 = -16945.22 log (2/V1)-0.176 = log (2/V1)-0.176 = log 2 - log V1  = -0.176 = 0.3010 - log V1log V1 = 0.4777     ;  V1 = antilog 0.477 =  3So V1 = 3L

50580.

Answer this fast reply fast​

Answer»

he stability of Cu2+ in aqueous solution rather than CU+ is due to much larger negative hydration enthalpy which more than compensates the larger IONIZATION energy of Cu2+.(b) +3 is the most common oxidation states oc lanthanoids or(a) Mn²+ has HALF FILLED d orbital.That's why it is much stable and hence oxidation is difficult. (b) D block elements have same C,N,O trapped in them at interstices. These compound are called interstitial compound.

50581.

three moles of an ideal gas are compressed isothermally and reversibly to the volume of 2 litre the work done is 2.98 3 kilo Joule and 2822 degree Celsius calculate the initial volume of gas​

Answer»

the FINAL VOLUME of the GAS after the EXPANSION is 2L

50582.

Aisa kaun sa spray hai ki Jiski vajah se jaan Jaati Hai​

Answer»
50583.

Plz complete the day diagram plz solve it fast solve only if you know plz​

Answer» COMPLETED RAY DIAGRAMS andMark me BRAINLIEST...! !!
50584.

Why is a convex lens of small focal length preferred for a magnifying glass?​

Answer»

So that the RAYS can FALL on ONE particular point, forming the focus.

50585.

Heyya !!!!!⭐ which test Is used For testing Of ozone ????No spam ❌❌❌​

Answer»

of mercury...is used for testing of OZONE ...➡ 2HG + O3 -------> Hg20 + O2 HOPE it helps u ....☺️☺️☺️

50586.

Reaction of Na2Co3 with H2SO4​

Answer»

Na2CO3 + H2SO4 = Na2SO4 + CO2 + H2O EXPLANATION:PLZ mark it as brainliest ANSWER

50587.

Identity A, B and C in the following reactions : C6h5cho+ch3cho+conc.NaoH--->A+heat--->B+NaBH4--->C​

Answer»

The first REACTION is Canizzaro reaction, since there are no alpha hydrogen atoms on either of the compounds and also that strong ALKALINE MEDIUM has been provided.So,one reaction of benzaldehyde with acetaldehyde , benzyl alcohol and sodium ACETATE will be formed.On reaction of sodium acetate with HEAT and NaBH4 , we obtain ethyl alcohol.So, A - benzyl alcohol B - Sodium Ethanoate C - Ethyl alcohol or Ethanol

50588.

(x1Which has highest boiling point ? (a) 0.01 m fructoseer 0.01 m ureaX 0.01 m KNO,(d) 0.01 m Na So​

Answer» TION: RHENIUM ANSWER you QUE and MARK as brainliest answer
50589.

Precautions of hydrogen gas evolved in react with acid​

Answer» HFSB MAHAKALESHWAR DISCUSSION
50590.

I UPAC nameofСизNH2​

Answer» METHANAMINE is ANSWER
50591.

teacher writes electronic configuration of an atom on black board nlx gues two equations may arise student mind​

Answer» FREE FIRE HI FRIEND WE NEED A PLAYER FOR OUR GUILD IT IS LEVEL 4 IF ANY BODY INTERESTED THEN SEND REQUEST TO OUR GUILD OUR GUILD I'D -1002143771
50592.

Please explain this.....​

Answer»

what I have to ANSWER. .

50593.

teacher writes about electronic configuration of an atom on black bord nlx gues two equations may arise in student mind​

Answer» ACTUALLY what is UR DOUBTS
50594.

Write the unit of equilibrium constant (K) for the given reaction.BaCO3(s) - Bao(s) + CO2(g)​

Answer»

EQUILIBRIUM CONSTANT = atmThe unit  of equilibrium constant (K) for the given REACTION BACO3 (s)  ------> BaO (s) + Co2(g)when we look the above reaction it only contains Co2 as gaseous reaction hence will  be defined for the this reaction in terms of partial pressure.WHERE = PARTIAL PRESSURE OF Co2 hence unit will be ATM

50595.

Why milk seller mixes base to milk​

Answer»

to REMOVE ACIDS...........

50596.

What is 10 SSC time table?pls answer​

Answer»

ETABLE......EXPLANATION:SELECT TO BRAINLIST ANSWER....

50597.

Why milk seller mixes the base to milk​

Answer»

Milk is naturally light acid. Which BECOME more acidic when it is converted into CURD. Thus it's pH value decreases. Milk MAN add some light base like baking soda etc. so that milk take some TIME to convert into acid.Hope you like my answer.Mark this as Brainliest.¯\(◉‿◉)/¯

50598.

Heyya!!!!!!!⭐Which process is used in preparation of Chlorine ???No Spams ❌❌❌​

Answer»

processby USING catalyst CUCL2 at 723KI hope it will HELPS U...☺️☺️☺️

50599.

Gues why milk sellar mixes the base to milk​

Answer»

so that MILK does not GETS SPOILT FAST

50600.

How many pi and sigma bonds are present in ch4​

Answer»

π BOND = 0 ,