Consider the following intermediate reactions.
ch4(9)+202(g) → co2(g)+2h2o(g)
2h2o(g) → 2h2o(1)
ah, -- 802 kj
ah2=-88 kj
the overall chemical reaction is as follows.
ch4(9)+202(g) → co2(g)+2h2o(0)
ah2 -- 890 kj
what is the correct enthalpy diagram using the hess law for this system?

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl

the answer your looking for is c).