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  • Question

  • Mg+O2=MgO Balance the above Chemical equation?


  • Options
  • A. 2Mg + O2 ----> 2MgO
  • B. 2Mg + O ----> 2MgO
  • C. 2Mg + O ----> MgO2
  • D. 2Mg + O2 ----> MgO2

  • Correct Answer
  • 2Mg + O2 ----> 2MgO 

    Explanation

    Given Equation is 

    Mg   +   O 2   ?   MgO

    Balancing the Chemical Equation is nothing but Conservation of Matter. As Matter is Neither created nor Destroyed, it must be conserved.

    Here we have 1 Mg and 2 O on the left side and 1 Mg and 1 O on the right side

    To balance that, add 1 Mg on the left side so that it becomes 2 Mg and 2 O on the left side

    i.e,

    2   Mg   +   O 2   ?   2   MgO

    Here it has 2 Mg & 2 O on the left side and 2 Mg and 2 O on the right side and the Chemical equation is Balanced.

    • Tags: GATE, AIEEE, Analyst

    Chemistry problems

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    • Options
    • A. Positive catalyst
    • B. Negative catalyst
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    • D. Induced catalyst
      • Discuss
    • 2. Of the following elements, which one has the same oxidation state in all of its compounds?

    • Options
    • A. Hydrogen
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    • D. oxygen
      • Discuss
    • 3. The law of constant proportions was enunciated by

    • Options
    • A. Dalton
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    • C. Avogadro
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    • A. Sand and gravel
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    • Options
    • A. 2-methyl-2-hydroxy propane
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    • 6. In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is 1) A2B5 2) A3B2 3) A2B3 4) A3B4

    • Options
    • A. Option 1
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    • Options
    • A. 518 nm
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      • Discuss
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    • Options
    • A. Decomposed
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      • Discuss
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    • Options
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