Answer :
The question seeks to determine the heat released when 150 grams of ZnS reacts with excess oxygen, which requires the chemical equation and enthalpy change for the calculation.
The question is asking about the amount of heat released when a given mass of zinc sulfide (ZnS) reacts with excess oxygen. To solve this, one would need the balanced chemical equation for the reaction and the enthalpy change for the reaction, which can then be used to calculate the amount of heat released using the relationship between enthalpy change, moles of reactant, and mass of the reactant.
