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Yeah the question is wrong. It should have been 3x^2. Then the answer would have been 8.
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^ Any help ?Q32:
Q36:
The equivalent weight of a certain trivalent element is 20. Molecular weight of the oxide is
A. 168
B. 68
C. 152
D. 56
The answer is A but how ?
The answer to the first one is D i think. The answer to the second one is -1/2its d ryt...?
how to solve second one.......
I thought the same, but its given different in book!I think the answer to question 42 is B.
1/10 = 0.1 mol dm-3What is the conc of FeSO4 in the last question ?
A is believe as direction of velocity changes but magnitude is same!A charged particle moves through a magnetic field perpendicular to its direction. Then
(1) the momentum changes but the kinetic energy is constant
(2) both momentum and kinetic energy of the particle are not constant
(3) both, momentum and kinetic energy of the particle are constant
(4) kinetic energy changes but the momentum is constant
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