Compound ΔHf° (kJ/mol) CH3OH(l) –238.7 O2(g) 0.00 CO2(g) –393.5 H2O(l) –285.8 How many grams of methanol must be combusted to raise the temperature of 441 g of water from 19.5°C to 44.16°C? Assume that the transfer of heat from the methanol flame to the water is 100% efficient.

Q: Zinc metal reacts with hydrochloric acid according to the following balanced equation:…

A: Given reaction is:    Zn (s) + 2 HCl (aq) → ZnCl2 (aq) + H2 (g)

Q: 2.045 g of a new compound with formula C9H8O2 is burned in a bomb calorimeter.  During the…

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Q: Find the molar enthalpy in kJ per mol of H2 of the reaction: H2(g) + Cl2(g) → 2 HCl(g) given that…

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Q: Calculate the change of enthalpy for the reaction CH4 (g) + NH3 (g) --> HCN (g) +3H2 (g) from the…

A: Answer:- this question is answered by using the simple concept of Hess law of constant summation of…

Q: A sample of NaOH (MM = 40.00 g/mol) with a mass of 1.812 g was added to a solution of HNO3 in a…

A: Heat absorbed = heat emitted

Q: Given the following reactions: Reaction 1: Fe2O3 (s) + 3CO (s) ¬ 2Fe (s) + 3CO2 (g) ΔH = -28.0 kJ…

A: Given reactions =' 1. Fe2O3 (s) + 3CO (s) ¬ 2Fe (s) + 3CO2 (g) ; ΔH = -28.0 kJ  2.  3Fe (s) + 4CO2…

Q: You place 50.0 mL of a 0.500 M solution of NaOH in a coffee-cup calorimeter at 25.00°C. You then…

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Q: The complete combustion of  1.05 g of cinnamaldehyde (C9H8O, one of the compounds in cinnamon) in a…

A: Given information,    1.05 g of cinnamaldehyde    Ccalorimeter =  3.60 kJ/°C    Increase in…

Q: What is the enthalpy change for the reaction below 8 CO2(g) + 10 H2O(l) → 2 C4H10(g) + 13 O2(g) If…

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Q: using the standard molar enthalpies of formation here below. Give the answer in kJ/mol-rxn (write…

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Q: The standard enthalpy change for the following reaction is -851 kJ at 298 K. 2 Na(s) + O2(g) +…

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Q: When ammonia reacts with dinitrogen oxide gas (ΔHf° = 82.05 kJ/mol), liquid water and nitrogen gas…

A: To determine the heat is liberated or absorbed by the reaction that produces 355 mL of nitrogen gas…

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Q: Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) + O2(g)2PBO(s) AH° =…

A: Given that -  (1) 2Pb(s) + O2(g) ----> 2PbO(s) , ∆H°1 = -434.6 kJ    (2) Pb(s) + Cl2(g) ---->…

Q: If 0.315 moles of hexane (C6H14) are burned in a bomb calorimeter containing 5.65 liters of water,…

A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…

Q: What mass of water, measured at 177 K and 0.720 atm, is required in order to release 1500 kJ of heat…

A: Given -> CH4(g) + 2O2(g) ----> 2H2O(l) + CO2(g) ∆H°=-890.3 kJ Temperature (T) = 177 K…

Q: 26 The standard enthalpy change for the following reaction is 6492.0 kJ/molpxn: What mass (in g) of…

A: Standard enthalpy of formation is the energy change during formation of respective compound.

Q: Given the following equation and the molar enthalpy of combustion of methane gas:…

A: ∆H°comb of methane = -802.5 kJ  Means, it is of one mole of methane. One Mole (16.04g) of methane…

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Q: The standard enthalpy of combustion of solid carbon to form carbon dioxide gas is -393.7 kJ per mol…

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Q: Calculate the heat of neutralization (kJ/mole) for the reaction of 50.0 mL of 0.177 M potassium…

A: The reaction taking place between is, 2KOH+H2SO4 →  K2SO4+2H2O

Q: Calculate the enthalpy change for the reaction of ti

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Q: Determine the amount of heat (in kJ) associated with the production of 3.26 ×104 g of ammonia…

A: From the given reaction we can see that 2 moles of ammonia is formed when heat associated with the…

Q: Calculate the change of enthalpy for the reaction CH4 (g) + NH3 (g) --> HCN (g) +3H2 (g) from the…

A: Calculate:- CH4 (g) + NH3 (g) --> HCN (g) +3H2 (g)  Given:- Reaction 1: N2 (g) + 3H2 (g) -->…

Q: The Bunsen burner in your labs are fueled by natural gas, which is  mostly methane, CH4. The…

A: The thermochemical equations for the combustion of methane (burning in oxygen) is: CH4(g)    +  2…

Q: Calculate the total enthalpy change (kJ) for the following reaction:   H2O (s, 90 g, –10. oC)…

A: In the above process, 3 steps are involved 1) Heating of 90 grams ice from –10 oC to 0 oC  2) fusion…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2C(s) + 2H2(g) C2H4(g) AH°…

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Q: Determine the enthalpy change, AH, in kJ, for the following reaction: CS₂ (1) + 302 (g) --> CO₂ (g)…

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Q: 5) Write the standard for

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Q: Given the standard enthalpy changes for the following two reactions: (1) N2(g) + 202(g)N½O4(g) AH° =…

A: You have given a reaction that follows the Hess Law of enthalpy formation.

Q: When a 6.50 g sample of solid sodium hydroxide dissolves in 100.0g of water in a coffee-cup…

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