The CH2 wag of formaldehyde appears at 1165 cm–1. How much energy does this correspond to? Group of answer choices 1.99 x 10–25 J 7.72 x 10–29 J 2.86 x 10–12 J 2.31 x 10–20 J

predict ΔrH for the following reaction in kj/mol HCΞCH  +  2 H2  →  H3C-CH3

Determine E, H, G, and S for CH4 at standard pressure and 25°C. σ equals 12 for methane and the atomization energy of CH4 is 1163 kJ/mol.

Given these reactions, where X represents a generic metal or metalloid 1) H, (g) + 0,(g) → H,0(g) AH1 = -241.8 kJ 2) X(s) + 2 Cl,(g) → XCl,(s) AH2 = +475.9 kJ 3) H,(g) + CL,(g) HCl(g) АНз 3 —92.3 kJ → 4) X(s) + O,(g) –→ XO,(s) AH4 = -748.7 kJ 5) Н, О(2) — н,00) AH5 = -44.0 kJ what is the enthalpy, AH, for this reaction? XCI, (8) + 2H,О() — ХО,(8) + 4 HCI(g)

Find delta S for the formation CH2CL2 (g) from its elements on their standard states.

A is -1214 Ethen 23.molar mass

The combustion of propane gas (C3H8; molar mass = 44.09 g/mol) occurs according to the following equation:                  C3H8(g)  +  5O2(g)  -->  3CO2(g)  +  4H2O(g)    Given the following standard molar enthalpy of formation (DHof), how much energy in kilojoules is produced when 1.00 g of propane is completely combusted?               DHof[C3H8] = -103.8 kJ/mol;  DHof[CO2] = -393.5 kJ/mol, and  DHof[H2O(g)] = -241.8 kJ/mol          (A) 2043.9 kJ          (B) 531.5 kJ          (C) 12.1 kJ          (D) 46.4 kJ

A) 425.66J/2.0360 g. Convert to kj/mol. Show the work. Molar mass = 39.99 NaOH B) 425.32J/ 1.9532g. Convert to kj/mol. Molar mass = 80.043 Na4NO3

Given the enthalpy of formation data in the table below, what is the enthalpy of reaction for the reaction you performed in this lab? How does this compare to your experimental results? To calculate the enthalpy of reaction, use the formula below. AHran=EAH; (products) - EAH; (reactants) ΔΗ, Note that you will need the balanced chemical equation for the reaction performed in the lab, which can be found in the Background in your Hayden-McNeil course site. Also note that AHⓇ for standard state elements is 0 kJ/mol. Substance AH₁ (kJ/mol) MgCl₂(aq) -785.1 kJ/mol HCl(aq) -167.2 kJ/mol