I dont think with this much amount of information we can solve this...unless its an reversible reaction in that case free energy =0
CH4 + 2O2 --> CO2 + 2H2O
On the reactant side you start with 1 carbon, 4 hydrogen, and 2 oxygen. On the product side you start with 1 carbon, 2 hydrogen, and 3 oxygen. In order to get them equal, you need to put 2 in front of the H2O which equals out the number of Hydrogen on both sides. But Now we must balance the Oxygens. Because of the H2O we now have 4 Oxygens on the product side and only 2 on the reactant. In order to balance this, we put a 2 in front of the O2 giving us 4 hydrogen on both sides, Balancing the equation
Greenhouse gases are the gases in the atmosphere that keep the air in the atmosphere. It traps the sun's sunlight. Since the heat is trapped in here, it would contribute to higher temperatures.
Answer: The particles in a solid are packed very close to each other.