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O Level Chemistry & IP Chemistry Notes by 10 Year Series Author – Chemistry Specialist

O Level Chemistry & IP Chemistry Notes by 10 Year Series Author - Chemistry Specialist

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O Level Chemistry: Mole Concepts / Chemical Calculations

A very interesting questions sent in by a local students on Mole Calculations / Mole Concepts / Chemical Calculations:

Try this out and leave your suggested answers in the “Comments” section below this post.

Questions:
A sample of sea-water contains 0.1 g/dm^3 of bromide ions.

(i) What volume of this sea-water produces one mole of bromine molecules?

(ii) What volume of chlorine gas is required to produce 8g of bromine from this sea water?

Suggested Answers:

mole-concepts-question.jpg

Related Articles:

  • O Level Chemistry: Acids, Bases and Redox
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  • O Level Chemistry Question: Mole Concepts / Mole Calculations
  • O Level Chemistry Questions – Qualitative Analysis (QA) / SPA Tips
  • O Level Chemistry – Products of Electrolysis of Molten Compound

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Comments

  1. rose says

    October 21, 2010 at 6:22 pm

    that is the relative atomic mass of br-

  2. Kay says

    September 13, 2009 at 6:27 pm

    hello i was wondering from where did 80 come from ? thats not avogadro’s number… (6X10^23) then what is it?

    Please reply
    Thnx alot!

  3. Kay says

    September 8, 2009 at 7:33 pm

    I really had difficulty to answer this, …! I m self-teaching AS chemistry .. its tough, and things like this, are pure hard.;. ! but thanks for posting this!

    — from Morocco

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