Answer:
The red substance was ionic. The white substance was molecular. 
Explanation:
B.C.
 
        
                    
             
        
        
        
Most scientists believe that it is caused by an abnormal protein in brain tissue, called a  prion, that can cause fatal disease when eaten.
        
                    
             
        
        
        
Answer: 1479watts
Explanation:
Power is defined as the energy expended or work done in a specific time. 
Mathematically,
Power = Workdone/time taken
Since work done is force × distance
Power = force × distance/time
Force = Mary's weight = 87N
Distance = height of the flight = 102meters
Time = 6.0seconds
Substituting in the formula we have;
Power = 87 × 102/6
Power = 1,479watts
Note that the time must be in seconds before usage. If its given in minutes, you will have to convert to seconds