The complete balanced chemical reaction is:
<span>C7H16  +  3O2 
-->  7CO2  +  8H2O</span>
 
So 3 moles of oxygen O2 is required for every 1 mole of
C7H16. In the same manner, 3 molecules of O2 is required for every 1 molecule
of C7H16.
 
Answer:
<span>3 molecules O2 </span>
 
        
             
        
        
        
Answer:
The velocity is 8.93 meters/second.
Step-by-step explanation:
It is given that  Elena runs for 28 seconds and finishes at 250 meters.
Here the displacement is 250 meters and the time is 28 seconds.
We know that  
Substitute displacement = 250 and time = 28 in above formula.

 meters/second
 meters/second
Hence, the velocity is 8.93 meters/second.
 
        
             
        
        
        
Answer:
2
Step-by-step explanation:
16f - 24 = 4f
12f = 24
f = 2
 
        
             
        
        
        
Answer:
Simplified: 4X^3
Step-by-step explanation:
Simplify the expression.
 
        
             
        
        
        
Answer:
In geometry, a transformation is an operation that moves, flips, or changes a shape to create a new shape. A dilation is a type of transformation that enlarges or reduces a figure (called the preimage) to create a new figure (called the image).
Step-by-step explanation: