The B stands for Boron which is 5 on the periodic table.
The O stands for Oxygen which is 8 on the periodic table.
There is 1 Boron,        It's only 1 because there is only on B which doesn't have coefficent 
There is 2 Oxygen,     The 2 is from the 2 next to the O
        
             
        
        
        
A salt can be formed by an Alkali metal and A Halogen
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Belive1234
 
        
                    
             
        
        
        
Tranquil, unless there are other answer choice options
        
                    
             
        
        
        
Answer:
B) 3.34
Explanation:
V1/T1 = V2/T2 
So V2= (T2xV1)/T1
Side note Temp for using gas law is always kelvin (Celsius +273.15)
Volume is always in Liters 
So V2 = (372.6Kx2.65L)/295.55L
Which results in 3.34L