A reaction between 46 grams of sodium and 71 grams of chlorine formed table salt and heat. Assuming no other matter entered the reaction vessel, which of the following measurements
would most likely be the mass of the table salt?

a. 25 grams
b. 71 grams
C. 115 grams
d. 117 grams

d. 117 grams

Explanation:

The mass of the table salt produced will be 117 grams.

Chemical reactions obey the law of conservation of mass. In this regard, matter is neither created nor destroyed in the course of a chemical reaction. It is expected that the mass of the reactants and products remain the same.

 The reaction expression:

         2Na + Cl₂  →   2NaCl

So, mass of sodium  = 46g

      mass of chlorine formed = 71g

Mass of NaCl  = 46 + 71 = 117g

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