The answer is 
CH4 + 2 O2 --> CO2 + 2 H20
        
             
        
        
        
Frequency can effect how tall or how long these Wavelengths are and their strength, therefore how "frequently" they will complete a wave-cycle. 
        
                    
             
        
        
        
Answer:
Ethanol
Explanation:
Solvent extraction is the process in which a compound transfers from one solvent to another owing to the difference in solubility or distribution coefficient between these two solvents(Science Direct).
We have to remember that oxalic acid will be extracted better into a solvent in which it is more soluble. From the data given; oxalic acid is more soluble in ethanol than in ether.
This simply means that ethanol is a better solvent for extracting oxalic acid  from water when compared to ether.
 
        
             
        
        
        
The answer is B. In the same direction as the force. Hope this helps :)
        
             
        
        
        
Answer:
well since 3 is greater than 2 it would be 3 moles of sulfur.
Explanation: