Sodium and chlorine combine to form table salt. given the chemical reaction, how many grams of 2na + cl2 would be required to produce 4 grams of table salt?

The mass of required would be, 4 grams.

Explanation:

Law of conservation of mass : It states that the mass can neither be created nor be destroyed but it can only be transformed from one form to another form.  

This also means that total mass on the reactant side must be equal to the total mass on the product side.

The chemical equation for the reaction will be,

According to the law of conservation of mass,

Mass of reactant = Mass of product

Mass of = Mass of

Mass of = 4 grams

Hence, the mass of required would be, 4 grams.

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.