Calculate Overall Energy Change in a Reaction
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Questions and Answers

Which element has the atomic number 37?

  • Rubidium (correct)
  • Scandium
  • Strontium
  • Potassium

    • What is the atomic number of Bismuth?

  • 83 (correct)
  • 75
  • 51
  • 70

    • Which element is represented by the symbol 'P'?

  • Nitrogen
  • Potassium
  • Polonium
  • Phosphorus (correct)

    • Which of the following elements has the greatest atomic number?

    <p>Berkelium</p> Signup and view all the answers

    What is the overall energy change for the reaction?

    <p>Not enough information provided</p> Signup and view all the answers

    What does the 'kJ/mol' unit in the text refer to?

    <p>Kilojoules per mole</p> Signup and view all the answers

    What does UCLES stand for in the text?

    <p>University of Cambridge Local Examinations Syndicate</p> Signup and view all the answers

    Where can the Copyright Acknowledgements Booklet be freely downloaded?

    <p><a href="http://www.cambridgeinternational.org">www.cambridgeinternational.org</a></p> Signup and view all the answers

    What is the chemical equation for the reaction occurring in stage 3?

    <p>H2S + SO2 → S + H2O</p> Signup and view all the answers

    What substance reacts with oleum in stage 4?

    <p>Hydrogen sulfide</p> Signup and view all the answers

    What is the formula of hydrogen sulfide?

    <p>H2S</p> Signup and view all the answers

    How is ethanoic acid manufactured?

    <p>By the reaction of methanol with carbon monoxide</p> Signup and view all the answers

    What is the relative charge of a neutron?

    <p>0</p> Signup and view all the answers

    How many protons are present in a 12Mg isotope?

    <p>12</p> Signup and view all the answers

    Why do magnesium ions have a charge of 2+?

    <p>Due to the loss of 2 electrons</p> Signup and view all the answers

    Which particle has the same electronic structure as Mg2+ ions?

    <p>Na+</p> Signup and view all the answers

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