Which of the following units would be the most appropriate for measuring the mass of a grain of rice? A. milligrams B. grams C.
2 answers:
You might be interested in
Answer: 480 kJ of energy is released when 3.5 mol of reacts.
Explanation:
The balanced chemical reaction is:
Thus it is given that the reaction is exothermic (heat energy is released) as enthalpy change for the reaction is negative.
1 mole of on reacting gives = 137 kJ of energy
Thus 3.5 moles of on reacting gives =
of energy
Thus 480 kJ of energy is released when 3.5 mol of reacts.