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b) Using the balanced equation from the previous question, w…

Posted on: April 4, 2025 Last updated on: April 4, 2025 Written by: Anonymous
b) Using the balanced equation from the previous question, what mass of oxygen is needed to completely burn 150 g of C5H12?          (3 marks)  
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A reaction which releases energy is called _______ .

Posted on: April 4, 2025 Last updated on: April 4, 2025 Written by: Anonymous
A reaction which releases energy is called _______ .
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Rusting iron is an example of an _______ .

Posted on: April 4, 2025 Last updated on: April 4, 2025 Written by: Anonymous
Rusting iron is an example of an _______ .
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Identify the particle that must receive 2 electrons to acqui…

Posted on: April 4, 2025 Last updated on: October 16, 2025 Written by: Anonymous
Identify the particle that must receive 2 electrons to acquire a charge of +1.
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Propane, C3H8, reacts with oxygen.  Write the balanced chemi…

Posted on: April 4, 2025 Last updated on: April 4, 2025 Written by: Anonymous
Propane, C3H8, reacts with oxygen.  Write the balanced chemical equation.   (4 marks)
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A gas initially occupies 14 L at 20oC. What will the new vol…

Posted on: April 4, 2025 Last updated on: April 4, 2025 Written by: Anonymous
A gas initially occupies 14 L at 20oC. What will the new volume of gas be at 70oC if the pressure is kept constant? (4 marks)
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The pressure exerted by a gas in a closed container is measu…

Posted on: April 4, 2025 Last updated on: October 16, 2025 Written by: Anonymous
The pressure exerted by a gas in a closed container is measured with a(n) _______ .
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The difference in electronegativity from calcium to iodine i…

Posted on: April 4, 2025 Last updated on: April 4, 2025 Written by: Anonymous
The difference in electronegativity from calcium to iodine is 3.66  
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There is a maximum of 4 electrons which can occupy an atom’s…

Posted on: April 4, 2025 Last updated on: October 16, 2025 Written by: Anonymous
There is a maximum of 4 electrons which can occupy an atom’s first energy level.
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The atomic number of an element is 31 and the mass number of…

Posted on: April 4, 2025 Last updated on: October 16, 2025 Written by: Anonymous
The atomic number of an element is 31 and the mass number of one of its atoms is 65.  This atom contains:
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