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The volume of chlorine molecules produced at STP would be  96 dm³.
<h3>Stoichiometric problem</h3>
Sodium chloride ionizes during electrolysis to produce sodium and chlorine ions as follows:

This means that 1 mole of sodium chloride will produce 1 mole of sodium ion and 1 mole of chlorine ion respectively.
Recall that: mole = mass/molar mass
Hence, 234 g of sodium chloride will give:
                          234/58.44 = 4.00 moles.
Thus, the equivalent number of moles of chlorine produced by 234 g of sodium chloride will be 4 moles.
Recall that:
1 mole of every gas at Standard Temperature and Pressure = 24 Liters.
Hence:
4 moles of chlorine = 4 x 24 = 96 Liters or 96 dm³.
More on stoichiometric problems can be found here: brainly.com/question/14465605
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Explanation:
The reaction expression is given as; 
                  2H₂ +  O₂
   +  O₂ →   2H₂O
   →   2H₂O
From the balance reaction expression: 
  2 mole of hydrogen gas combines with 1 mole of oxygen gas on the reactant side; 
 
This produces 2 mole of water on the product side of the expression. 
The product is in liquid form. 
  This reaction is a synthesis reaction because a single product is formed from two reactants. 
 
        
             
        
        
        
Answer:
1. 4FeCl3 + 3O2 → 2Fe2O3 + 6Cl2
2. 6 moles of Cl2 
Explanation:
1. The balanced equation for the reaction. This is illustrated below:
4FeCl3 + 3O2 → 2Fe2O3 + 6Cl2
2. Determination of the number of mole of Cl2 produce when 4 moles of FeCl3 react with 4 moles. To obtain the number of mole of Cl2 produced, we must determine which reactant is the limiting reactant. 
This is illustrated below:
From the balanced equation above, 
4 moles of FeCl3 reacted with 3 moles of O2. 
Since lesser amount of O2 (i.e 3 moles) than what was given (i.e 4 moles) is needed to react completely with 4 moles of FeCl3, therefore FeCl3 is the limiting reactant and O2 is the excess reactant. 
Finally, we can obtain the number of mole Cl2 produced from the reaction as follow:
Note: the limiting reactant is used as it will produce the maximum yield of the reaction since all of it is used up in the reaction. 
From the balanced equation above, 
4 moles of FeCl3 will react to produced 6 moles of Cl2. 
 
        
             
        
        
        
No of Neutrons =Mass No-No of protons 


- Hence it has atomic no 38
The element is Stroncium(Sr)