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  1. nightrider1993

    Chemistry: Post your doubts here!

    And is there a easy way for memorizing the positive and negative sign of a endo/exothermic reaction? i always get confused b/w the 2
  2. nightrider1993

    Chemistry: Post your doubts here!

    Describe and explain how the solubility of sulfates of group 2 elements vary down the group. Is there a easy way of memorizing how the enthalpy of hydration, lattice enthalpy and enthalpy of solution change down the group?
  3. nightrider1993

    Mathematics: Post your doubts here!

    Hey einstein, hope this helps.... love ur username :-)
  4. nightrider1993

    Mathematics: Post your doubts here!

    Question 3 I answered the question in the order u gave it
  5. nightrider1993

    P1 MCQ's preparation thread for chemistry ONLY!!!!

    So are there any doubts regarding the P1 chemistry paper?
  6. nightrider1993

    Mathematics: Post your doubts here!

    Question 5 Question 6
  7. nightrider1993

    Mathematics: Post your doubts here!

  8. nightrider1993

    Chemistry: Post your doubts here!

    No problem. Glad to help
  9. nightrider1993

    Chemistry: Post your doubts here!

    If you still have any doubts say it... i'll try to clarify it otherwise someone else might need to help :-)
  10. nightrider1993

    Chemistry: Post your doubts here!

    The electrode is not accepting the electrons, hydrogen is accepting it. And the electrode is donating the electrons to the hydrogen ions. Hope it clarifies it.. if not say it
  11. nightrider1993

    Chemistry: Post your doubts here!

    2(H+) + 2(e) = (H2) A negative electrode(cathode) is a source of electrons. Therefore since hydrogen gas is produced, so left electrode is connected to the negative power source. Hope this answers it.
  12. nightrider1993

    Physics: Post your doubts here!

    The Force break up into different components, ie, horizontal and vertical components. Therefore less force is applied on the tibia and femur (skeletal bones)
  13. nightrider1993

    Mathematics: Post your doubts here!

    Hey sorry i read your question just now. but i think parthrock's already answered it pretty well
  14. nightrider1993

    Wats its use anyway?

    Wats its use anyway?
  15. nightrider1993

    Physics: Post your doubts here!

    Remember that the voltage in parallel is same. For top part: The voltage across 500 resistor (PX) is 4 volts: Voltage across PX= (500/1500)*12 = 4 V For bottom part: The voltage across 2000 resistor (PY) is 8 volts: Voltage across PY= (2000/3000)*12 = 8V Therefore, voltage across XY= 8-4 = 4 V
  16. nightrider1993

    Physics: Post your doubts here!

    lol, that simple,eh...
  17. nightrider1993

    need help in chem a2

    How does the NMR differentiate between the different hydrogen atoms?
  18. nightrider1993

    Physics: Post your doubts here!

    Do you know the answer to part b?
  19. nightrider1993

    Physics: Post your doubts here!

    Do you know the answer to part b?
  20. nightrider1993

    Physics: Post your doubts here!

    The answers for MCQ are in this examiner report
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