Answer:
Numbers of electrons transferred in the electrolytic or voltaic cell is 6 electrons.
Explanation:


The substance having highest positive reduction  potential will always get reduced and will undergo reduction reaction.
 potential will always get reduced and will undergo reduction reaction.
Reduction : cathode 
 ..[1]
..[1]
Oxidation: anode
 ..[2]
..[2]
Oxidation reaction occurs at anode and reduction reaction occurs at cathode.
To calculate the  of the reaction, we use the equation:
 of the reaction, we use the equation:


The overall reaction will be:
2 × [1] + 3 × [2] :

Electrons on both sides will get cancelled : 

Numbers of electrons transferred in the electrolytic or voltaic cell is 6 electrons.
 
        
             
        
        
        
Hey there
the answers are
A.
and
 D. He could spray the fire extinguisher in the opposite direction of the space station 
hope this helps 
 
        
                    
             
        
        
        
<u>Answer:</u> No crystals of potassium sulfate will be seen at 0°C for the given amount.
<u>Explanation:</u>
We are given:
Mass of potassium nitrate = 47.6 g
Mass of potassium sulfate = 8.4 g
Mass of water = 130. g
Solubility of potassium sulfate in water at 0°C = 7.4 g/100 g
This means that 7.4 grams of potassium sulfate is soluble in 100 grams of water
Applying unitary method:
In 100 grams of water, the amount of potassium sulfate dissolved is 7.4 grams
So, in 130 grams of water, the amount of potassium sulfate dissolved will be 
As, the soluble amount is greater than the given amount of potassium sulfate
This means that, all of potassium sulfate will be dissolved.
Hence, no crystals of potassium sulfate will be seen at 0°C for the given amount.
 
        
             
        
        
        
2 Al+ 3 CuO-> 1 Al2O3+ 3Cu