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  1. Madina2410

    Chemistry: Post your doubts here!

    Thank you so much for clearing my doubts😄
  2. Madina2410

    Chemistry: Post your doubts here!

    Thank you
  3. Madina2410

    Chemistry: Post your doubts here!

    And how does the box diagram look like for elements beyond potassium , how do we fill it diagrammatically
  4. Madina2410

    Chemistry: Post your doubts here!

    Hello again, there’s a question that’s rather bothering . Can someone just explain why is it the “b” option
  5. Madina2410

    Chemistry: Post your doubts here!

    The oxidation number of H is +1, but it is -1 in when combined with less electronegative elements. what examples are there that makes hydrogen more electronegative hence giving it a negative -1 ?
  6. Madina2410

    Chemistry: Post your doubts here!

    Do
  7. Madina2410

    Chemistry: Post your doubts here!

    Help please
  8. Madina2410

    Chemistry: Post your doubts here!

    Thank you , appreciate It
  9. Madina2410

    Chemistry: Post your doubts here!

    Can someone explain this question to me please?
  10. Madina2410

    Chemistry: Post your doubts here!

    I don’t understand why we have to do Hess law, what’s its importance any way if we can just do the subtraction method
  11. Madina2410

    Chemistry: Post your doubts here!

    And you should find the formation of CO
  12. Madina2410

    Chemistry: Post your doubts here!

    What if we get this question CO(g) + 1/2O2(g) CO2(g) ∆H = -284 kJmol-1 , isn’t it oxygen gas is 0 , CO results to -284
  13. Madina2410

    Chemistry: Post your doubts here!

    I have a question , what’s the purpose of drawing the Hess’a cycle if we can directly do the subtraction method
  14. Madina2410

    Chemistry: Post your doubts here!

    Ex exactly😂 I thought the same way because this question was given by my teacher and I thought I’m missing out something
  15. Madina2410

    Chemistry: Post your doubts here!

    Th thank you
  16. Madina2410

    Chemistry: Post your doubts here!

    CH4(g) + 2O2(g) CO2(g) + 2H2O(l) ∆H = -890 kJmol-1 what’s the entalphy of formation of methane
  17. Madina2410

    Chemistry: Post your doubts here!

    Hi can you explain why the enthalpy change of neutralisation of one mole of sulfuric acid, H2SO4, is not the standard enthalpy change of neutralisation.
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