Answer:
The answer is 105.98844. 
<h3>Explanation: </h3>
We assume you are converting between grams Na2CO3 and mole. You can view more details on each measurement unit: molecular weight of Na2CO3 or mol This compound is also known as Sodium Carbonate.
 
        
             
        
        
        
The answer is: the mass of oxygen is 16.95 grams.
The overall balanced photosynthesis reaction:  
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂.  
m(C₆H₁₂O₆) = 15.90 g; mass of glucose.
n(C₆H₁₂O₆) = m(C₆H₁₂O₆) ÷ M(C₆H₁₂O₆).
n(C₆H₁₂O₆) = 15.9 g ÷ 180.18 g/mol.
n(C₆H₁₂O₆) = 0.088 mol; amount of glucose.
From chemical reaction: n(C₆H₁₂O₆) : n(O₂) = 1 : 6.
n(O₂) = 6 · 0.088 mol.
n(O₂) = 0.53 mol; amount of oxygen.
m(O₂) = 0.53 mol · 32.00 g/mol.
m(O₂) = 16.95 g; mass of oxygen.
 
        
                    
             
        
        
        
For every 2 Mol NaOH you would get 1 Mol N2H4
        
             
        
        
        
The answer is:  "second order" .
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