It is a combustion reaction. C3H8 will react with oxygen to form carbon dioxide and water.
        
             
        
        
        
Molecules of an ideal gas is composed of a large number of identical molecules moving in random directions, separated by distances that are large compared with their size.
        
             
        
        
        
<span>The correct answer is( A) blood. 
when the buffer solution its PH value changes very little when a small amount  
of strong acid or base is added to it, and here the bicarbonate buffering system is used to regular the PH of the blood that keeping the PH at nearly constant value by maintaining the original acidity or basicity of the solution.</span>
        
             
        
        
        
The population would decrease, the more predators there are the more food needed for the species .
        
                    
             
        
        
        
Answer:
43.89 min
Explanation:
Given that:-
The speed of light = 
The distance = 
The conversion of distance in km to distance into m is shown below as:-
1 km = 1000 m
So, 
Distance = 
The relation between speed distance and time is shown below as:-

Thus, 


Time = 2633.33 seconds
Also, 1 s = 1/60 min
So, 
Time=