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Ответ:
Mass of Chlorine gas : 4.544 g
Further explanationA 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) :