A scientist measures the standard enthalpy change for the following reaction to be -111.2 kJ : 2NO(g) + O2(g)2NO2(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of NO2(g) is  _______kJ/mol.

A scientist measures the standard enthalpy change for the following reaction to be -576.2 kJ: H_2CO(g) + O_2(g) --> CO_2(g) + H_2O(I) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of CO_2 (g) is _______ kJ_mol. Note: underscore represents subscript.

Il Metro by T-Mobile 1:06 AM n 24% Question 15 of 35 Submit Specific Heat Capacity J/(g•°C) Metal Aluminum 0.90 Сopper 0.38 Iron 0.45 Magnesium 1.00 Silver 0.23 Tin 0.32 Titanium 0.52 A) Fe B) Sn C) Ag D) Cu Tap here or pull up for additional resources

What is the change in enthalpy for the reaction: 2B (s) + 3H2(g) → B2H6 (g) given these thermochemical equations? B2H6 (g) + 302 (g) →B2O3 (s) + 3 H₂O (g) AH = -2032 kJ 2B (s) + 3/2 O2 (g) → B2O3 (s) AH = -1272 kJ H2(g) + 1/2 O2 (g) → H2O (g) AH -241.8 kJ -4029 kJ +518.2 kJ +34.6 kJ -3546 kJ

A scientist measures the standard enthalpy change for the following reaction to be -901.4 kJ:2NH3(g) + 3 N2O(g)-------->4N2(g) + 3 H2O(g)Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of H2O(g) is __________  kJ/mol.

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A scientist measures the standard enthalpy change for the following reaction to be 184.8 kJ:Fe3O4(s) + 4 H2(g) 3Fe(s) + 4 H2O(g)Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of Fe3O4(s) is kJ/mol.

Use the References to access important values if needed for this question. A scientist measures the standard enthalpy change for the following reaction to be 31.1 kJ: CO2(g) + H2(g)–→CO(g)+ H2O(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of H20(g) is kJ/mol. Submit Answer Try Another Version 3 item attempts remaining

Use the References to access important values if needed for this question. A scientist measures the standard enthalpy change for the following reaction to be -103.2 kJ: 4HCl(g) + O2(g) → 2H₂O(g) + 2Cl₂ (g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of HCl(g) is I kJ/mol red Species AH (kJ/mol) H₂O(g) -241.8 Cl₂(g) 0.0 0₂ (9) 0.0

Hot water heaters often use natural gas (methane) to generate heat. Methane and oxygen react to form carbon monoxide according to the overall equation: 2CH4(g)+3O2(g) = 2CO(g)+4H2O(g) The enthalpy of formation for each compound are as follows: CH4: - 74.6 O2: 0 CO: - 110.5 H2O: - 285.8 Part A: calculate the overall enthalpy change of the reaction. Part B: A typical water heater contains 40.0 gallons of water. After a long vacation, you come home and turn your water heater from "vacation mode" to hot. How many moles of methane must be combusted to heat the water in your water heater from 30.0°C to 48.0°C? The density of water is 3.79 kg/gal, the specific heat capacity of water is 4.182 J/g°C, and the water heater has a heat capacity of 850.0 J/g°C.