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(chatquestion)...2F. GE NO. DPP-1 78. Three bases XOH, YOH and ZOH are having the dissociation constant Kb1, K2 and K respectively (Kb1 <Kb2<Kb3). Then which of the salt solution has minimum pH value $ (A) XCI (B) YCI (C) ZCI (D) all have same pH For a triprotic acid H3A, K, is 10, K„ is 10° and K, is 10-10. The pHranges in which H2A¯ and HA? are the predominant forms respectively , are (A) 1-3 and 5 –-7 (B) 5-7 and 1–3 (C) 3–5 and 7-9 (D) 7-9 and 3- 5 79. The pH of pure water at 80° will be - (A) >7 80. (B) <7 (D) cannot be predicted...(Anyone 79 please with solution)
other
telegram-55843
asked
Feb 8, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...- How many centres of octahedral voids lie in the given plane of FCC unit cell ? (1) Zero (2) 1 (3) 4 (4) 5...(Plz explain)
other
telegram-55841
asked
Feb 8, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...A mass M oscillates at the end of a spring that has spring constant k and finite mass m. (a) Show that the total energy E of the system for oscillations of small amplitude is given by E = 12(M +m/3)v2 + 12kx2 where v and x are the velocity and displacement of the mass M, respectively. (Hint: To find the kinetic energy of the spring, consider it to be divided into infinitesimal elements of length dl and find the total kinetic energy of these elements, assuming that the mass of the spring is evenly distributed along its length. The total energy E of the system is the sum of the kinetic energies of the spring and the mass M and the potential energy of the extended spring.) (b) Hence show that the frequency of the oscillations is equal to √k/(M + m/3).
other
telegram-55839
asked
Feb 8, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...HI excess Н I ОН...(Plz explain this mechanism)
other
telegram-55837
asked
Feb 8, 2020
by
balaji.thirumalai
0
answers
Picture question - class 12 - physics
physics
class12
asked
Feb 8, 2020
by
isvaryaarumugam
1
answer
(chatquestion)...A particle oscillates with amplitude A in a one-dimensional potential U (x) that is symmetric about x = 0, i.e. U (x) = U(-x). (a) Show, from energy considerations, that the velocity v of the particle at displacement x from the equilibrium position (x = 0), is given by v = /2[U (A) – U(x)]/m. (b) Hence show that the period of oscillation T is given by dx T = 4, V[I- U(x)/U(A)] 2U (A) Simple Harmonic Motion (c) If the potential U (x) is given by U (x) = ax" where a is a constant and n = 2, 4, 6, ..., obtain the dependence of the period T on the amplitude A for different values of n = 2, 4, .... (Hint: Introduce the new variable of integration = x/A in the above expression for the period T.)
other
telegram-55829
asked
Feb 8, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...1.12 A mass M oscillates at the end of a spring that has spring constant k and finite mass m. (a) Show that the total energy E of the system for oscillations of small amplitude is given by 1. E = (M + m/3)v² +kx? where v and x are the velocity and displacement of the mass M, respectively. (Hint: To find the kinetic energy of the spring, consider it to be divided into infinitesimal elements of length d! and find the total kinetic energy of these elements, assuming that the mass of the spring is evenly distributed along its length. The total energy E of the system is the sum of the kinetic energies of the spring and the mass M and the potential energy of the extended spring.) (b) Hence show that the frequency of the oscillations is equal to k/(M + m/3).
other
telegram-55827
asked
Feb 8, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...Henry law constant for the solubility of ethylene in water at 20 C is 1.01x10-4 atm-1, calculate the weight of ethylene which will dissolve in 1000 g of H2O under ethylene pressure of 2 atm at 20 C 0.431g 0.134g 2 0.413g 0.314g 4
other
telegram-55824
asked
Feb 8, 2020
by
balaji.thirumalai
1
answer
Picture question - class 12 - physics
physics
class12
asked
Feb 8, 2020
by
chhagnanineel
0
answers
(chatquestion)...PAGE NO DATE A unit coll of Nickle %23 face Sentre Cube 0•064 Nm 3. is of fund Atomic Radius of Ni. Volume O 141 Pm (a) 145 Pm () 160 pm (b) 153 pm...(Give me solution)
other
telegram-55821
asked
Feb 8, 2020
by
balaji.thirumalai
0
answers
25% of the scores in a distribution is less than the score 10 and 25%is mor
class12
asked
Feb 8, 2020
by
archanakalita1302
0
answers
Picture question - class 12 - math
math
class12
asked
Feb 8, 2020
by
rohitrsn055
4
answers
Picture question - class 12 - math
math
class12
asked
Feb 8, 2020
by
rohitrsn055
1
answer
(chatquestion)...JEE (Main & Advanced) (Level-IlI) Electric Charges and Fields 81 6. An infinitely long uniform line charge distribution of charge per unit length 2 lies parallel to the y-axis in the V3 a (see figure). If the magnitude of the flux of the electric field through the rectangular y-z plane at % = surface ABCD lying in the x-y plane with its centre at the origin is (E, = permittivity of free space), then neo %3D the value ofn is Eloctrestall pacitance в Two inifinite rods parallel to z-axis with linear charge density passes through points (-a, 0, 0) and (a, 0, 0) charge (-g) and mass m placed at origin is given slight displacement 7.
other
telegram-55805
asked
Feb 8, 2020
by
balaji.thirumalai
0
answers
Picture question - class 11 - physics
physics
class11
asked
Feb 8, 2020
by
medurgesh1
0
answers
In any triangle ABC prove that a(sinB-sinC)+B(sinC-sinA)+C(sinC-sinB)=0
math
class11
asked
Feb 8, 2020
by
dhaniramsanta3
1
answer
Find number of permutations and combinations of 4 letters taken from the wo
math
class11
asked
Feb 8, 2020
by
varun10leo
0
answers
Picture question - class 10 - math
math
class10
asked
Feb 8, 2020
by
polurampachar875
2
answers
Picture question - math
math
noclass
asked
Feb 7, 2020
by
achinta.jio
1
answer
What is hefty price tag?
biology
class12
asked
Feb 7, 2020
by
dhanyanraj126
1
answer
The value of PV/T for one mole of an ideal gas Is nearly
physics
class12
asked
Feb 7, 2020
by
amansooraj23
1
answer
(chatquestion)...0-4. Find the coefficient of x7 in (1– 2x + x³)5 ....(Pls solve this)
other
telegram-55786
asked
Feb 7, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...Ut dy Ao cos (@t -kx) dt Particle velocity v, Vp =-V x slope = dy = -V p. dx dy Particle acceleration : a, ôt? 2²Asin (ot-kx) = -o°y For particle 1: V, v and For particle 2: v 1 and at For particle 3: v 1 and a ↑ For particle 4 : V v and a ↑ 2. 4. p. neiauon velween phase difference, path difference & time difference Δφ Δλ ΔΤ...(Esko koi please explain kar do...)
other
telegram-55784
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...-- / \ Question 10 For a certain binary solution at constant T and P Vm=a1 +2 a2 m +3 a3 m2 Where m is the molality, a1, a2 and a3 are constant and Vm is the partial molar volume. Deduce the expression for the total volume VT as function of m VT = 2 a2 m2 + a3 m3 T = a1 + a2 m2 + m3 VT = 2a1 + 3 a3 m3 3 %3D VT = a1 +2 a2 m2 + 3a3 m3 4 21
other
telegram-55781
asked
Feb 7, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...-- / Question 13 Two liquids A &B form an ideal solution at Temperature T, when the total vapor pressure above the solution is 600 torr, the mole fraction of A in the vapor phase is 0.35 and in the liquid phase is 0.7, What are the vapor pressure of pure A &B at temperature T. POA=0.300 torr, PoB=1.300 torr POA=300 torr, PoB=1300 torr POA=1300 torr, PoB=300 torr POA=303 torr, PoB=3300 torr 4
other
telegram-55778
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...Not Attempted A plant with genotype AABBRITE. What would be percentage of gamete containing four dominant allele:- (B) 37.5% (A) 12.5 % (C) 6.25 % (D) 25Po
other
telegram-55777
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...Naoo, lequivalont leapivalent b) an,o OCH CH2...(Given Answer is (a). Can anyone justify?)
other
telegram-55771
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...CH3 CHi3 SHiyhtI f CHs Low +I df CHis duu to distemce
other
telegram-55747
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...2) Write the number of factors of 64 x 5 a) 16 b) 10 c) 25 d) 50
other
telegram-55729
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
Picture question - class 12 - biology
biology
class12
asked
Feb 7, 2020
by
ayushsatapathy390
1
answer
which of the following letters of English alphabet has reflection symmetry
math
class7
asked
Feb 7, 2020
by
munimjee.com
1
answer
Is the tension in a string on either side of a pulley the same throughout i
physics
class11
asked
Feb 7, 2020
by
akk154446
1
answer
Picture question - class 11 - physics
physics
class11
asked
Feb 7, 2020
by
akk154446
0
answers
(chatquestion)...What is the change in internal energy when a gas is compressed from 377 ml to 177 ml under a constant pressure of 1520 torr, while at the same time being cooled by removing 124 J heat ? (Take : (IL atm) = (A)-24 J 100 J] (B) - 84 - 164 J J (C) (D) - 248 J
other
telegram-55702
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...— сн dur 0E Г- Он Э. Вир CH3 он 3- ри 4. 1स of CHz...(Tell please Acidic strength order with reasoning)
other
telegram-55697
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...In the following ester there are three carbon oxygen bonds denoted by x, y and z Nurtur ing potentia Their lengths are in order CH;-C-O-CH, У Z (В) х <у <z (D) z < y < x (A) x = y = z (C) x < y = z 4....(Q4)
other
telegram-3989
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...In the following ester there are three carbon oxygen bonds denoted by x, y and z Nurtur ing potentia Their lengths are in order CH;-C-O-CH, У Z (В) х <у <z (D) z < y < x (A) x = y = z (C) x < y = z 4....(Q4)
other
telegram-55663
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...Questions 6 to 10 are one word answers: (6) Name the substance used as depressant in the separation of two sulphide ores in Froth floatation method. (7) Name the unit formed by the attachment of a base to l' position of sugar in a nucleoside. (8) Name the species formed when an aqueous solution of amino acid is dissolved in water? (9) What type of reaction occurs in the formation of Nylon 6.6 polymer?...(Photo from Akshay Kumar Yadav)
other
telegram-55653
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...Const volume of Ches at p' Afom pressuu i to increased by 10%. of holume faitice the new s. 10%. by by Remain Dee 10% fame None P.v, = %3D
other
telegram-55618
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...volume of gas Constant %23 At is énireased by tempreture fressane p. Ý the puesure at 10%. of volume initiee'pressare be.'9 will New
other
telegram-55614
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
Picture question - class 12 - math
math
class12
asked
Feb 7, 2020
by
ydas431
1
answer
(chatquestion)...COONA, X is : 8. Conc.NaOH Он -CH, (D) H- (B) (A) -СНО 8.
other
telegram-55576
asked
Feb 7, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...mix mix For two liquids A and B forming ideal solution. 67. 67 If P > P then which of the following is correct? X, alwaysX (2) YA= (WY, > X, A. A. (4) P, = PX+ P (3) X, > Y %3D
other
telegram-55573
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...NATIONAL AVIATION UNIVERSITY EXAMINATION PHYSICS on the subject Student's name Faculty Department Speciality: year of study academic group No General and Applied Physics 272 "Aviation Transport" Date « 20 >> VARIANT No28 Write down and explain Ohm's law (write down formulas and draw corresponding schemes) A load with the mass of 2 kg is attached to the cord end wrapped around a drum. Find the drum Consider the drum to be a homogeneous cylinder. eration of the load is 3 m/ mass if acc Disregard friction Charge of +2,5-10-7 C is placed in the square center. What charge should be placed in each square vertex the system of charges to be in the equilibrium state...(2 and 3. Please)
other
telegram-55569
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...9 The diagram shows part of the curve y =- line x = k. 3-x and the straight YA y =-3-x If the volume generated when the shaded region is revolved through 360° about the x-axis is units', find the value of k. 12...(How to do this?)
other
telegram-55550
asked
Feb 7, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...Question 11 -- / \ Henry law constant for the solubility of ethylene in water at 20 C is 1.01x10-4 atm-1, calculate the weight of ethylene which will dissolve in 1000 g of H2O under ethylene pressure of 2 atm at 20 C 0.431g 0.134g 2 0.413g 0.314g 4 3.
other
telegram-55547
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...-- / \ Question 5 The volume of an aqueous NaCl solution at 25C is expressed as function of amount in 1Kg of solvent in the following term V(mL)=1000.44+16.4m+2.014m3/2-0.00275/2 Calculate the partial molar volume of water and NaCl respectively when m=1 17.98 &194.14 ml 18.79 &19.414 ml 179.8&19.414 ml 3 17.98 &19.414 ml 4
other
telegram-55544
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...11. A massless rope is wrapped several times on a disc of mass M and radius R. The other end is tied to a mass m which at the begining is at a height of h above the ground as shown in the figure. When released the velocity of the mass as it touches the ground is - (1) v4/3 gh (2) v2gh (3) V4mgh/3M (4) V4mgh/M + 2m
other
telegram-55540
asked
Feb 7, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...lim liin 2. ))...(11. Maths (limits and derivatives). Can someone tell me that when x is tending towards infinity, how come all the X's in f(x) become 1? Thank You in advance!)
other
telegram-55527
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...The coefficient of x?y?, yzt? and xyzt in the expansion of (x + y + z+ t)* a (A) 4:2:1 (C) 1:2:4 1. (B) 2:4:1 (D) 2:3:4 32003 where {.} denotes the fractional part, is equal to 2. The value of 28 15 (A) 28 5 (B) 28 19 (C) 28 9. (D) 28...(Photo from Srayan Bhattacharyya)
other
telegram-55523
asked
Feb 7, 2020
by
balaji.thirumalai
0
answers
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