a coffee cup calorimeter, 44.0 mL of 0.11 M nitric acid (HNO,) and 44.0 mL of 0.11 M potassium hydroxide (KOH) are xed to observe the heat released during the neutralization reaction. Based on the data in the table, what is the enthalpy of the utralization reaction between HNO, and KOH? Hox Initial temperature in the calorimeter (C) Final temperature in the calorimeter (C) Final mass of the neutralized solution (g) Calorimeter constant (I/C)) -5.38 x10¹ 19.1 19.8 87.71 4.75 kJ/mol

When 6.30 g sample of solid potassium hydroxide (MM= 56.11g/mol) is dissolved in 101.00 g of water (at 21.2 degrees Celsius) the temperature of the resulting solution is 38.8 degrees Celsius. What is the AH for this dissolution reaction? Assume the specific heat of the solution is the same as water. Only include the numerical value not units or labels.

4. Consider the equations for these reactions: % N2 + % O2 → NO NO2 → NO + % 02 AH = +90.4 kJ AH = +56.5 All reactants are gaseous. What is the heat of formation (AH;) for NO2 gas?

Consider an endothermic reaction that takes place in 303 mL of solution.  If the reaction requires 4,468 J of energy and the initial temperature of the solution is 26.7, what will the final solution temperature be? (3 sf) The density of solution is 1.00 g/mL and the specific heat of the solution is the same as that of water.