A bleaching solution requires 6.55 g of sodium hypochlorite. How many grams of a 21.5% by mass solution of sodium hypochlorite should be used

Ithink its solid. hope this

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.