Not sure if this is correct but i would choose the steel tray.
 
        
                    
             
        
        
        
Answer:
Ka = 4.76108
Explanation:
- CO(g) + 2H2(g) ↔ CH3OH(g)
∴ Keq = [CH3OH(g)] / [H2(g)]²[CO(g)]
                       [ ]initial         change         [ ]eq
CO(g)              0.27 M       0.27 - x        0.27 - x
H2(g)              0.49 M       0.49 - x        0.49 - x
CH3OH(g)          0                0 + x               x = 0.11 M
replacing in Ka:
⇒ Ka = ( x ) / (0.49 - x)²(0.27 - x)
⇒ Ka = (0.11) / (0.49 - 0.11)² (0.27 - 0.11)
⇒ Ka = (0.11) / (0.38)²(0.16)
⇒ Ka = 4.76108
 
        
             
        
        
        
The electron configuration 
1
s
2
2
s
2
2
p
6
3
s
2
3
p
2
 is the element Silicon.
The key to deciphering this is to look at the last bit of information of the electron configuration 
3
p
2
.
The '3' informs us that the element is in the 3rd Energy Level or row of the periodic table. The 'p' tells us that the element is found in the p-block which are all of the Groups to the right of the transition metals, columns 13-18. The superscript '2' tells us that the element is found in the 2nd column of the p-block Group 14.