Solution of the 088 on the chemistry of Shimanovich IL 2001-2004

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88. The thermal effect of a reaction is the heat of formation of methane? Calculate the heat of formation of methane, based on the following thermochemical equations:
H2 (g) + 1 / 2O2 (g) = H2O (g); (Delta) H = -285.84 kJ.
C (k) + O2 (g) = CO2 (g); (Delta) H = -393.51 kJ.
CH4 (g) + 2O2 (g) = 2H2O (g) + CO2 (g); (Delta) H = -890.34 kJ.

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After payment You get a ready-made solution to the problem of 88 in chemistry manuals for external students Shimanovich IL 2004. (Same as the manuals in 2001, 2003 - but just in case check against the conditions).
The decision is made in the format WORD (extension is nomer_zadachi.doc). Archived archiver in ZIP archive. The solution passed repeatedly in the leading universities of the country, all the mistakes and shortcomings corrected.

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