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  1. joseph charlie

    Need help

    Please help with second part
  2. joseph charlie

    Chemistry: Post your doubts here!

    In flooded soils, like those used for rice cultivation, the oxygen content is low. In such soils, anaerobic bacteria cause the loss of nitrogen from the soil as shown in the following sequence. In which step is the change in oxidation number (oxidation state) of nitrogen different to the...
  3. joseph charlie

    Writting As exams

    Writting As exams
  4. joseph charlie

    Chemistry MCQ thread...

    Thanks for the help i appreciate it , but i kinda figured it out on my own after reading nd understanding the question.
  5. joseph charlie

    Chemistry MCQ thread...

    Please hhelp with this question for may june 2006 Use of the Data Booklet is relevant to this question. What mass of solid residue can be obtained from the thermal decomposition of 4.10 g of anhydrous calcium nitrate? A 0.70 g B 1.00g C 1.40g D 2.25g
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