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SS2: CHEMISTRY - 1ST TERM

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  1. Periodicity and Periodic Table I | Week 1
    5 Topics
    |
    1 Quiz
  2. Quantum Numbers Orbitals & Electrical Structure | Week 2
    6 Topics
    |
    1 Quiz
  3. Periodicity and Periodic Table II | Week 3
    12 Topics
    |
    1 Quiz
  4. Periodicity and Periodic Properties III | Week 4
    11 Topics
    |
    1 Quiz
  5. Periodicity and Periodic Properties IV | Week 5
    5 Topics
    |
    1 Quiz
  6. Mass-Volume Relationship in Reaction | Week 6
    8 Topics
    |
    1 Quiz
  7. Types of Reactions: Oxidation and Reduction | Week 7 & 8
    7 Topics
    |
    1 Quiz
  8. Oxidation – Reduction Reaction II | Week 9
    3 Topics
    |
    1 Quiz
  9. Electrode Potential and Electrochemical Cells I | Week 10
    6 Topics
    |
    1 Quiz
  10. Electrode Potential and Electrochemical Cells II | Week 11
    5 Topics
    |
    1 Quiz
  11. Electrolysis I | Week 12
    8 Topics
    |
    1 Quiz
  12. Electrolysis II | Week 13
    8 Topics
    |
    1 Quiz
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Topic Content:

  • Mass-Mass Calculations

In Mass-mass calculation, one mass is given and another mass is to be determined.

Example 6.3.1:

Calculate the mass of calcium oxide formed when 1.5 g of calcium is completely burnt in oxygen [Ca = 40, O = 16]: 

Solution:

2Ca[s] + O2[g] → 2CaO[s]

Molar mass of Ca = 40

RMM of CaO = 40 + 16 = 56

2 moles of  Ca[s] ⇒ 2 moles of  CaO[s]

2 × 40 g of Ca[s]  ⇒ 2 × [40 + 16] g of CaO[s]

 

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