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Given the thermochemical equation SO2(g) + ½ O2(g) ---> SO3 (g) DH = -99.1 kJ

calculate the enthalpy change (DH) when 89.6 g of SO2 is converted to SO3.
1. 69.3 kJ
2. -111 kJ
3. -139 kJ
4. 139 kJ
5. -69.3 kJ

help plz

4 answers

  1. i got -139 kJ
    is that right?

  2. I get 138.7 which rounds to 139. Good work.

  3. That's a -139 of course.

  5. Do it on your own.

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