The reaction between nitrogen and oxygen is given below: N2(g) + O2(g) → 2 NO(g) We therefore know that which of the following reactions can also occur? | 2 NO2(g) → 2 NO(g) + O2(g) 2 NO(g) → N2(g) + O2(g) 2 NO(g) + 02(g)→ 2 NO2(g) O None of the Above

In a coffee-cup calorimeter, 110.0 mL of 1.2 M NaOH and 110.0 mL of 1.2 M HCl are mixed. Both solutions were originally at 22.5°C. After the reaction, the final temperature is 30.5°C. Assuming that all the solutions have a density of 1.0 g/cm³ and a specific heat capacity of 4.18 J/°C.g, calculate the enthalpy change for the neutralization of HCl by NaOH. Assume that no heat is lost to the surroundings or to the calorimeter. AH = 0.182 kJ/mol

Suppose a pair of chemical compounds A and B can react in two different ways: A+B C Reaction 1 gives product C. A+B D Reaction 2 gives product D. The following facts are known about the two reactions: . Both reactions are exothermic, but the heat of reaction of Reaction #1 is larger. • If a reaction vessel is charged ("filled") with A and B, then at first C is produced faster than D. Use these facts to sketch a qualitative reaction energy diagram for both reactions. Note: because these sketches are only qualitative, the energies don't have to be exact. They only have to have the right relationship to each other. For example, if one energy is less than another, that fact should be clear in your sketch. energy ^ A + B Reaction 1 reaction coordinate energy ^ A+B Reaction 2 reaction coordinate X Ś

Determine the energy associated with each of these processes in order to recycle 1.26 mol Cu. The smelting of copper occurs by the balanced chemical equation: CuO(s)+CO(g)Cu(s)+CO2​(g)where ΔH°f,CuO is = –155 kJ/mol. Assume the process of recycling copper is simplified to just the melting of the solid Cu starting at 25°C. The melting point of Cu is 1084.5°C with ΔH°fus = 13.0 kJ/mol and a molar heat capacity, cP,Cu = 24.5 J/mol·°C.