3. Consider the reaction in which CO2, and H20 form CH4 and 0, a. Write a balanced chemical equation for this reaction.
b. Include the appropriate quantity of energy (in joules) as either a
reactant or product in the chemical equation. (Hint: See Section
C.2, page 335.)
c. Explain how you knew whether to consider energy as a reactant
or product.

  the mississippians were considered to be  horticulturalists, which means they were

Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car