D, it is considered unethical today
        
                    
             
        
        
        
Answer:
air because their is nothing contained within the air other than all the solutions that you have listed
Explanation:
 
        
                    
             
        
        
        
Answer:
Ur litterly dog water ✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️
 
        
             
        
        
        
Answer:
45200J
Explanation:
Given parameters:
Heat of vaporization of water  = 2260J/g
Mass of steam = 20g
Temperature = 100°C
Unknown:
Energy released during the condensation  = ?
Solution:
This change is a phase change and there is no change in temperature
To find the amount of heat released;
          H  = mL
m is the mass
L is the latent heat of vaporization
 Insert the parameters and solve;
          H  = 20g x 2260J/g
           H = 45200J
 
        
             
        
        
        
The greater the temperature, the greater the volume - this is Charles's law, said by Jacques Charles, a French inventor, scientist, and mathematician.