Answer:
4 moles of SO3 will be produced from 6 moles of oxygen.
Explanation:
From the reaction given
S8 + 12 O2 ----> 8 SO3
12 moles of oxygen reacts to form 8 moles of SO3
if 6 moles of oxygen were to be used instead, it has been reduced to half of the original mole of oxygen used. Then the moles of SO3 will also be reduced to half. 
6 moles of O2 will yield 4 moles of SO3
 12 moles = 8 moles
6 moles = ?
? = 6 * 8 / 12
? = 48/ 12
? = 4 moles of SO3.
 
        
             
        
        
        
Answer:
 t = 37.1 s
Explanation:
The equation for the reaction is given as;
                   2 N2O5(g)  --> 4 NO2 + O2
Initial:          0.110                  -             -
change:        -2x                  +4x        +x
Final:          0.110 - 2x           +4x        +x
But final = 0.150atm;
 0.110 - 2x    +  4x   +  x = 0.150 atm
3x = 0.150 - 0.110
x = 0.0133 atm
Pressure in reactant side;
0.110 - 2x
0.110 - 2 (0.0133) = 0.0834 atm
The integral rate law expression is given as;
ln ( [A] / [Ao] ) = -kt
k =  rate constant = 7.48*10^-3*s-1
ln (0.0834/0.11) = (7.48*10^-3)  t
upon solving, t = 37.1 s
 
        
             
        
        
        
According to the second law of thermodynamics, heat energy released by an organism is released into the <span>environment and unusable. This energy is also known as entropy which is defined as the tendency of things to be dispersed and spontaneous. This means that entropy is always random and becomes unavailable energy.</span>
        
                    
             
        
        
        
Answer:
His speed was 2 m/s, and his velocity was 0.  So it is B
Explanation:
took the test 
 
        
             
        
        
        
Expected to deal with what? Fires?