The reaction between boron sulfide and carbon is given as:
2B2S3 + 3C → 4B + 3CS2
As per the law of conservation of mass, for any chemical reaction the total mass of reactants must be equal to the total mass of the products.
Given data:
Mass of C = 2.1 * 10^ 4 g
Mass of B = 3.11*10^4 g
Mass of CS2 = 1.47*10^5
Mass of B2S3 = ?
Now based on the law of conservation of mass:
Mass of B2S3 + mass C = mass of B + mass of CS2
Mass of B2S3 + 2.1 * 10^ 4 = 3.11*10^4 + 1.47*10^5
Mass of B2S3 = 15.7 * 10^4 g
 
        
             
        
        
        
Answer:
is there choices you have to pick from 
Explanation:
or do you have to describe a covalent bond ? 
 
        
                    
             
        
        
        
Answer:
KOH and H₂SO₄
Explanation:
Neutralization reaction:
It is the reaction in which acid and base react with each other and produce salt and water.
For example:
2KOH + H₂SO₄  →   K₂SO₄ + 2H₂O
1. Potassium hydroxide and sulfuric acid react to produce potassium sulfate salt and water.
2. Potassium hydroxide and phosphoric acid react to produce potassium phosphate and water.
H₃PO₄  + 3KOH  → K₃PO₄ + 3H₂O
3. Phosphoric acid sodium hydroxide react to produce sodium phosphate and water.
H₃PO₄  + 3NaOH   → Na₃PO₄ + 3H₂O
 
        
                    
             
        
        
        
Answer:Noble gases:
  are highly reactive.
  react only with other gases.
  do not appear in the periodic table.
  are not very reactive with other elements.
Explanation:Noble gases:
  are highly reactive.
  react only with other gases.
  do not appear in the periodic table.
  are not very reactive with other elements.
 
        
             
        
        
        
<span>Cesium-134 is an isotope. An isotope is two or more elements that have the same number of protons, but different number of neutrons. A Neutron is a subatomic particle that has about to same mass as a proton, but its not electrically charged. One atom of CS-134 has 78 neutrons.</span>