How many grams of chlorine gas must react with sodium iodide to form 7.50 grams of sodum chloride

Mass of Chlorine gas : 4.544 g

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction Chlorine gas with Sodium iodide :

Cl₂(g)+2NaI(s)⇒2NaCl(s)+I₂(s)

Sodium chloride-NaCl produced = 7.5 g

mass NaCl(MW=58.5 g/mol) :

mol Cl₂ based on mol NaCl

From the equation, mol ratio Cl₂ : NaCl = 1 : 2, so mol Cl₂ :

mass Cl₂ (MW=71 g/mol) :

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.