Asystem initially containing 2 mol c2h4 and 3 mol o2 undergoes the reactions: c2 h4(g) + _1 2 o2(g) → ⟨(ch2)2⟩o(g) c2 h4(g) + 3o2(g) → 2co2(g) + 2h2o(g) develop expressions for the mole fractions of the reacting species as functions of the reaction coordinates for the two reactions.

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i don't understand really? can u provide more information

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d would be the most obvious choice to this question. leaders are supposed to herd their underlings like a shepherd to sheep. a leader should also listen to others when they are talking to one other to gain a better understanding of their mission and surroundings.

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truck

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design model: consists of design geometry; can be 2d or 3d; typically has a black background.

design files: drawing created with microsoft expression design, a drawing and design program for windows; may contain both vector and raster graphics; can also include multiple layers and various image effects.

elements: an element is a single part of a larger group.