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krishna
Questions (10)
the 10th term of an arithmetic sequence is equal to the sum of 40 and 5th term.If the 15th term is 127 what is its common
1 answer
1,100 views
Of the three angles of a triangle one is twice the smallest and another one is thrice the smallest. Find the angles
3 answers
960 views
a pulley is used to lift a mass with a force of 900N to a height of 10 metres in 2 minutes.find the work done by the force and
5 answers
1,586 views
what is a nouns
3 answers
413 views
the distance between two stations is 340 km two trains start simultaneously on parallel tracks to each other . the speed of one
5 answers
1,665 views
a sportcar moving from rest 0 to 100km/h ..there hanging a pendulum in the car..what will be the angle pendulum can make with
0 answers
383 views
for depolarization of 1 mole of KMnO4, the moles of H2O2 required is_________
2 answers
1,742 views
2.35*10^-4M,,Mg(OH)2
what is the pH of this solution
1 answer
438 views
if the line 3x-4y=0 is tangent in the first quadrant to the curve y=x^3+k, find k.
all i know is that its related to finding a
4 answers
625 views
i have free speech.my topic is have ever done anything that you wish you hadn't done?what happened and how the situation might
3 answers
400 views
Answers (12)
Thank you- this is very helpful
Prove that the area of circular path of uniform width h surrounding a circular region at radius r is pi h 2r+h
3 Cu2S + 8 SO4{-}2 + 8 H{+} = 6 CuO + 11 SO2 + 4 H2O
C=qy
x=(-6,0) y=(0,18)
I was going to post it anyway
SIR PLEASE EXPLAIN THE ANSWER
2m
thanks so much!
C6H6 + (CH3)3Cl -AlCl3---> C6H5(CH3)3 C6H5(CH3)3 ---- HNO3/H2SO4--> para-NO2 C6H5(CH3)3---- major ortho-NO2 C6H5(CH3)3---- minor
Quinine has a tertiary amine group so acts as base QN + H2O -----> QNH+ + OH- given pka is 8.52 -log ka=8.52 ka= 3*10^-09, for conjugate acid base pair at 25degrees Celsius kw= ka*kb therefore Kb= kw/ka = 10^-14/ 3*10^-09 = 3.4 *10^-06 from equation
the answer is not clear
