The density of ethane is 545 kg/m3. If its specific energy is found out to be -86.8 MJ/kg, what is the energy density of ethane? Use approximation.

Q: Consider these reactions: Reaction 1: H2(�)+Cl2(�)⟶2HCl(�)Δ�=−184.6 kJ  Reaction 2:…

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Q: When a 5 gram sample of a pure element absorbs 23.1 J of energy, it’s temperature increases from…

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Q: The enthalpy of formation for H2O(g), CO2(g), and C2H5OH(l), in kJ/mol, are given as follows:…

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Q: Ethanol (C2H5OH) is used as a base for many fuels. Assume it undergoes complete combustion. How much…

A: The complete combustion reaction for ethanol is given as: C2H5OH(l) + 3O2(g) ----> 2CO2(g) +…

Q: A local FM radio station broadcasts at a frequency of 90.8 MHz. ( 1 MHz = 106 s-¹) S Calculate the…

A: Here, we have to find the energy of the frequency 90.8 MHz.

Q: A 2.00 g aluminum wire and a 2.00 g gold wire are both initially at 25.0 °C. How much energy is…

A: Since Q = energy required = mCΔT  where m = mass C = specific heat capacity  ΔT = change in…

Q: In the late eighteenth century Priestley prepared ammonia by reacting HNO3(g) with hydrogen gas. The…

A: A reaction can be categorized as an endothermic or exothermic reaction. If the energy is released…

Q: How much energy is evolved during the formation of 102 g of Al2O3, according to the reaction…

A: Given, the heat evolved in the reaction is -852kJ.

Q: Assume that coal can be approximated as C(s) (again, not a great assumption, but sufficient for this…

A: Let, 2 C(s) + O2(g) → 2 CO(g)                                     Delta H = -222 kJ   Reaction 1…

Q: 5. Calculate the enthalpy of reaction for the following reaction that methanogenic bacteria use to…

A: Answer: Enthalpy of a reaction is always equal to the difference between enthalpy of formation of…

Q: how much energy in kilojoules is produced when 1.00 g of propane is completely combusted?

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Q: enthalpy of sublimation (direct conversion from solid to gas) of carbon dioxide is 26.1 kJ/mol. what…

A: Enthalpy of sublimation (direct conversion from solid to gas) of carbon dioxide is 26.1 kJ/mol. what…

Q: How much energy in kilojoules is required to convert 511 mL of water at its boiling point from…

A: Boiling point of water is 100°C. Boiling point is defined as temperature at which liquid convert…

Q: A chemist measures the enthalpy change AH during the following reaction: 2 HNO,) + Mg(s)→Mg…

A: Given thermodynamical Chemical equation is - 2HNO3(l) + Mg(s) -----> Mg(NO3)2(s) + H2(g)     ∆H =…

Q: Use the following enthalpy data and apply Hess's Law to calculate the formation of NH4Cl(s). 1/2…

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Q: what mass of CH4 (in g) must combust in order to produce 5.46 KJ of energy

A: Given :- CH4+2O2 ----------> CO2+2H20  ∆H = -802.3 kJ/mol  To calculate :- mass of CH4 (in g) to…

Q: A piece of silver with a mass 418 g has a heat capacity of 99.1 J/°C. What is the specific heat of…

A: Given, heat capcity 'c' of silver = 90.1 J/oC , mass of silver = 418 g, specific heat = ?

Q: what energy change occurs when 2.2 moles of methane (CH4) reacts?

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Q: In 2008 the approximate energy consumption for the entire population of earth for an entire year was…

A: The energy consumption for the entire population of earth is 4.74×1020Joules. The energy of the…

Q: A chemist measures the energy change H during the following reaction at 1 atm pressure and 25.00 C…

A: 36 g of H2O means 2 moles of water is produced . so from the equation  we can see that 1 moles of…

Q: Calculate the energy required to heat 591.0 mg of mercury from -7.8 °C to -2.3 °C. Assume the…

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Q: 5.137 Both glucose and fructose are simple sugars with the same molecular formula of C6H12O6.…

A: The number of moles of glucose in 2.0 g of glucose tablet is determined as follows.…

Q: How much work is done at 25 °C during the combustion of 2.03 g of ethanol, C2H5OH?

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Q: Use the standard enthalpies of formation to determine the molar enthalpy of combustion for pentane.…

A: The standard enthalpy of combustion of a compound is the reaction of a compound in the presence of…

Q: Consider the following reaction: 2 H, + O,-> 2 H,O A. H=- 483.6 kJ/mol rxn a Is this reaction…

A: Given that : enthalpy of reaction ∆H = 483.6 kJ/mol We need to check if reaction is exothermic or…

Q: The enthalpy of reaction is −2202.0 kJ/mol. How much energy (in joules) will be released if 61.95…

A: Energy released = number of moles × molar enthalpy of combustion

Q: A chemist measures the energy change AH during the following reaction: 2 H₂O(1)→ 2 H₂(g) + O₂(g) Use…

A: In an exothermic reaction, heat is released and in an endothermic reaction, heat is absorbed.

Q: A chunk of tungsten weighing 18.64 grams and originally at 97.78 °C is dropped into an insulated cup…

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Q: 1.2 moles of a compound reacts with a ΔHrxn=88 kJ/mole.  It proceeds 74% to completion.  How much…

A: Given: no of moles, n= 1.2 moles Enthalpy of reaction, ΔHrxn=88 kJ/mole completion % = 74 %

Q: When 2.0 mole of ZnO(s) decomposes to Zn(s) and O2 (g), the Δ H = 696 kJ of heat energy. What does…

A: Reaction involved:-  2ZnO(s) = 2Zn(s) + O2 (g)  ∆H = 696 kJ

Q: The combustion of propane is given by the following reaction. C3H8 + 3 O2 → 3 CO2 + 4 H2O The…

A: Given, Reaction : C3H8 + 3 O2 → 3 CO2 + 4 H2O Mass of propane = 55.11 grams Molar mass = 44.11 g/mol…

Q: How much energy is evolved during the reaction of 51.2 g of Al, according to the reaction below?…

A: Given reaction: Fe2O3(s) + 2 Al(s) → Al2O3(s) + 2 Fe(s)       ΔH°rxn = -852 kJ We have to find the…

Q: (Q19) In order to measure the heat capacity of a calorimeter, 50.0 mL of hot water at 60.0°C were…

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Q: If 7.30 kJ of energy are required to change the temperature of a sample of  water from 5.0 oC to…

A: The energy required to raise the temperature of 'M' g of a substance by 'T' degree celsius is given…

Q: Calculate the amount of energy released when 50.9 g of iron oxide reacts with an excess of hydrogen…

A: Given balanced reaction is 4 H2 + Fe2O4 --> 2 Fe + 4 H2O First convert the given grams of iron…

Q: Use the enthalpy for the combustion of propane (C3H8) to compare the energy from this common fuel to…

A: It is impossible to create energy from nothing in accord with the "conversation of energy" and…

Q: The standard free energy change = blank

A: Determine E° for the given reaction and then apply formula  ∆G° = -nFE°

Q: Determine the energy associated with each of these processes in order to recycle 1.26 mol Cu. The…

A: Total energy required = heat required to raise temperature of Cu from 250C to 1084.50C (q1) + heat…

Q: Suppose the 25.0 g of the following substances all initially at 27.0 °C absorb 2.35 kJ of energy.…

A: Amount of heat,Q required to change the temperature of a substance of mass ,m and specific heat…

Q: A chemist measures the enthalpy change AH during the following reaction: Sg(s) + 24 F,(g)→8 SF,(g)…

A: (i) +9672 kJ (ii) -2618 kJ (iii) +1612 kJ

Q: 7.312 g of dry ice (solid carbon dioxide) is placed in a sealed 2.000 L bag in a room where the…

A: Moles of carbon dioxide used = Mass of dry iceMolar mass of CO2=7.312 g44 g/mol=0.166 mol

Q: A chemist measures the energy change AH during the following reaction: 2 NH3(g) → N₂(g)+3H₂(g) Use…

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Q: A 40.0 kg industrial calorimeter has an overall specific heat capacity of 1.00 J/ (g°C). Complete…

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Q: The combustion of hexane is given by the following reaction. 2 C6H14 + 19 O2  12 CO2 + 14 H2O The…

A: Combustion :- When a substance is burnt in excess of air or in oxygen then the process is called…

Q: A serving of Chocobits cereal is 122 g.A 1.00-g sample of the cereal is burned in a bomb calorimeter…

A: The objective of this question is to calculate the energy content of a serving of Chocobits cereal…