Energy is released by the formation of chemical bonds, and energy is 
absorbed when the bonds are broken.
<h3>What is a chemical reaction?</h3>
A chemical reaction involves the formation of new compounds from 
reactants . It involves the formation and breaking of bonds in the 
elements.
Energy is released by the formation of chemical bonds and this type of 
reaction is referred to as exothermic while energy is absorbed when the 
bonds are broken and is referred to as an endothermic reaction.
Read more about Chemical reaction here brainly.com/question/16416932
 
        
                    
             
        
        
        
The volume of eye drop fluid in a bottle is specified in milliliter, because in medical 1 drop=12ml
        
             
        
        
        
Answer: The pressure of the He is 2.97 atm
Explanation:
According to Dalton's law, the total pressure is the sum of individual pressures.
 
Given :  =total pressure of gases = 6.50 atm
 =total pressure of gases = 6.50 atm
 = partial pressure of Nitrogen = 1.23 atm
 = partial pressure of Nitrogen = 1.23 atm
 = partial pressure of oxygen = 2.3 atm
 = partial pressure of oxygen = 2.3 atm
 = partial pressure of Helium = ?
 = partial pressure of Helium = ?
putting in the values we get:
 
  
 
 
The pressure of the He is 2.97 atm
 
        
             
        
        
        
Answer:
nearer to the north pole
Explanation:
because there is more water, which is basically gone everywhere else on Mars except for the south pole which has less water than the north pole