Answer:
C
Explanation:
When something is chemical it is warped into a completely new substance and when coal is burned it is new so it is definitely C.
 
        
             
        
        
        
I would say C. petroleum
A is wrong
B is impractical for "mainly used"
D thats too expensive
 
        
                    
             
        
        
        
Janes brother Jack is actually correct, underground water seeps into little holes or spaces between the soil and the rocks.
<h3>Underground Water</h3>
Simply put, underground water is found in between soils and crack, another name for this is called aquifers were water is found.
It should be noted that underground water are found at varying levels depending the terrain.
Learn more about  Underground Water here:
brainly.com/question/23135301
 
        
             
        
        
        
We can solve this problem when we use the conditions of a gas at standard temperature and pressure. It has been established that at STP where the temperature is 0 degrees Celsius and the pressure is 101.325 kPa, the volume of 1 mole of gas is 22.4 L. We will use this data for the calculations.
68.5 L ( 1 mol O2 / 22.4 L O2 ) = 3.06 mol O2