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    hi can anybody help me with this question


    1. In which reaction is the volume of products less than the volume of reactants.

      A CH4 (g) + 2O2(g) -> CO2 (g) + 2H2O(g)
      B 2NH3 (g) -> N2 (g) + 3H2 (g)
      C H2 (g) + Cl2 (g) -> 2HCl (g)
      D 2CO(g) + O2(g) -> 2CO2 (g)

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    Simply count how many molecules are on the LHS and compare it to the RHS.

    Do your own counting, I'm too busy to count to as high as four.
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    Volume only depends on the number of molecules, regardless of the gas. So in D the LHS has 3 moles of molecules for every 2 moles of CO2 on the RHS.
 
 
 
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