HBr   +   NaOH

Please help me understand why this is the correct answer.  Question 1. If the change in internal energy is measured to be 0, and heat is absorbed by the system, which of the following reactions could be taking place? (Assume a closed container at constant temperature with a constant external pressure). Correct: BaCO3(s) → BaO(s) + CO2(g)Incorrect C2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(l)Incorrect N2(g) + 2O2(g) → 2NO2(g)Incorrect C(s) + O2(g) → CO2(g)Incorrect None of these reactions could apply. 2) What is the molar mass of an unknown organic liquid based on the data from analysis of the liquid? Vaporization of 230.0 mg of the compound in a 120 mL bulb at 130°C gives a pressure of 440.0 torr. Correct: 110. g/molIncorrect 230. g/molIncorrect none of these answers are correctIncorrect 33.1 g/molIncorrect 1.10×105 g/mol

Reaction Description of Ethanol: In this section, you will describe a reaction related to the production or use of the compound, ethanol. You must include the following: 1)Type of reaction—Describe the general class of reaction (combustion, acid/base, redox, etc.).2)Heat of reaction—Provide the amount of heat that must be added or removed from this reaction at the relevant temperature and whether this reaction is exothermic or endothermic.3)All products, reactants, and catalysts—Include a balanced equation with all states of participants.4)Special considerations—Document the safe operating range of this reaction, safety considerations, and side reactions that may produce unwanted products.5)Summary of other possible reactions—Provide either another reaction to produce the compound or an alternate use and its reaction.

Use the following information to answer Questions 6-9: A sample of NH4NO3 with a mass of 5.0 g is dissolved in 40.1 g of deoinized water in a calorimeter.  The initial temperature of the water is 21.2 oC.  The final temperature of the solution is 15.4 oC.  The calorimeter constant = 25.2 J/oC. Is the following statement true or false? This process is exothermic.  True  False

Using the equations H₂ (g) + Cl₂ (g) → 2 HCI (g) AH° = -184.6 kJ/mol C (s) + 2 Cl₂ (g) →→ CCI (g) AH° = -95.7 kJ/mol Determine the molar enthalpy (in kJ/mol) for the reaction C (s) + 4 HCI (g) → CCI (g) + 2 H₂ (g). 4 2

please complete 1 through 5!

Chemical reactions occur when molecules or atoms collide in a way that the bonds between atoms break and new bonds form. Breaking the bonds of the reactants requires energy, whereas bond formation releases energy. Select the true statements regarding energy changes during a reaction. When the activation energy is high, the reaction rate is fast. If the heat of reaction, AH, is positive, the energy of the products is lower than the energy of the reactants and the reaction is exothermic. Decreasing the temperature decreases the kinetic energy of the reactants, and the reaction goes more slowly. The energy of a collision between atoms or molecules must be greater than or equal to the activation energy, Ea, for bonds to be broken. Increasing the concentration of reactants increases the number of collisions, and the reaction goes faster. Reactants must collide with proper orientation and with energy greater than or equal to the activation energy for a reaction to occur. The activation…

1. What is the enthalpy of reaction per mole of HCl (g) in the following reaction.( Don't have to explain why) 4HCl (g) + O2 (g) → 2Cl2 (g) + 2H2O + 114.4 kJ a) -457.6 kJ / mol b) -114.4 kJ / mol c) -28.6 kJ / mol d) +114.4 kJ / mol 2. The standard enthalpy of formation of a compound represents: a) The thermal energy released by the decomposition of one mole of this compound. b) The change in enthalpy when a mole of this compound is formed from its elements under standard conditions. c) The change in enthalpy when one mole of an element turns into a compound. d)The thermal energy released by the complete combustion of one mole of this compound. e) The enthalpy change of the phase transition of one mole of this compound.

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Calculate ΔH° for the reaction using the given bond dissociation energies.   CH4(g)+2O2(g)⟶CO2(g)+2H2O(g) Bond ΔH° (kJ/mol) O–OO–O 142 H–OH–O 459 C−HC−H 411 C=OC=O 799 O=OO=O 498 C–OC–O 358 What type of reaction is this?