how many grams of solid lithium must be added to liquid after in order to obtain 15.0 L of hydrogen gas at STP?
1 answer:
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Answer: b. -100 kJ
Explanation:
Heat of reaction is the energy released or absorbed during the course of the reaction. It is represented by the symbol .
= enthalpy of reaction = ?
= enthalpy of products = 0 kJ
= enthalpy of reactants = 100 kJ
Thus the ΔH for the reaction is -100kJ