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  1. Thought blocker

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    Chemistry: Post your doubts here!

    Ask someone else, I have 109 sums left to solve ._. I'll tell u tomorrow at school. not.maria help him out, I have 109 sums of physics left to solve. :(
  6. Thought blocker

    Chemistry: Post your doubts here!

    Okay, here goes: CO2(g) + H2(g) -> CO(g) + H2O(g) CO2 is being broken, so instead of -283, we take +283 H2O is being formed, so we use -286 BUT it is being formed in gaseous state, not liquid state, so we also take +44. 283 + 44 - 286 = +41. So the answer is C
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