30% should be the percentage of oxygen if the total mass of fe2o3 is 160.
The answer is D, coal is a nonrenewable resource.
Unburned hydrocarbon on reacting with oxygen undergoes combustion reaction. However, the activation energy of this reaction is significantly high. When a catalyst like Pd is added to the reaction system, it provides active sites for the reaction to occur. It acts are a heterogeneous catalyst. It is pertinent of note that catalyst is refereed as heterogeneous, when it exist in different phase as compared to reactant and products. In present case, reactants and products are in gas phase, while catalyst is in solid phase. Due to availability of larger surface area at active site of Pd, activation energy of reaction decreases and decrease in activation energy favors higher reaction rates.
Answer:
The Darvaza gas crater know as the "Door To Hell" is a natural gas crater. Geologists intenyionally set fire to it
Explanation:
Geologists intentionally set fire to it in order to prevent the spread of methane gas
Sound, light, kinetic, heat energy
