Answer:

Explanation:
Hello there!
In this case, according to the given information, it turns out firstly necessary to write out the described chemical reaction as shown below:

Now, we set up the expression for the calculation of the standard free energy change, considering the free energy of formation of each species, specially those of H2 and F2 which are both 0 because they are pure elements:

Regards!
Answer: petroleum
because it is a fossil fuel like coal, and natural gas.
Answer:
both are done due to the enviroment??
The atmosphere contains the air we breathe
Explanation:
I don't know this answer what Hydrogen Helium lithium