Hydrogen cyanide is a highly poisonous,volatile liquid.One way in which it can be prepared is by the reaction: CH4 + NH3 producing HCN + 3H2

Q: Consider the hypothetical thermochemical equation 3 A + B 2 C for which AH = 59.3 kJ/mol. What would…

A: The reaction 2 C -----> 3 A + B is just the reverse of 3 A + B ------> 2 C   So the ΔH for the…

Q: When a 2.000-gram sample of pure phenol, C6H5OH(s), is completely burned according to the equation…

A: Mass of phenol sample taken = 2.000 gHeat released by combustion of 2.000 g of phenol = 64.98 kJIt…

Q: Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics…

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Q: One piece of copper jewelry at 105oC has twice the mass of another piece at 45oC. Both are placed in…

A: The heat lost (or) heat gained could given by expression is, q=mc∆T

Q: The standard enthalpy change for the following reaction is -3.35×103 kJ at 298 K. 4 Al(s) + 3…

A: We are given the reaction - 4 Al(s) + 3 O2(g)  →   2 Al2O3(s) We proceed as follows,for finding out…

Q: When 1 mol of CS₂(l) forms from its elements at 1 atm and 25C, 89.7 kJ is absorbed, and it takes…

A: The enthalpy change of the following reaction is ∆H1. The enthalpy change of the following reaction…

Q: Given the thermochemical expression below: CaO (s) + 3C (s) ----> CaC2 (s) + CO (g)…

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Q: A sample of bismuth undergoes a temperature change of +77.24 °C while absorbing 754.5 joules of…

A: Specific heat capacity is amount of heat needed to increase the temperature of one gram of substance…

Q: Given the thermochemical reaction below is this an exo- or endothermic process? 2H2 + O2 --> 2H2O…

A: In given reaction ∆H is negative so is reaction is exothermic. If we reverse any chemical reaction…

Q: An engineering student wants to study the heat transfer between a 50 g of heated block of iron (cFe…

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Q: Calculate how much heat 32.0g of Iron (Fe) absorbs when it is heated from 25oC go 80oc. How many…

A: Heat is absorbed by a system to raise its temperature. During this process there can also be a…

Q: A 75.0 mL of 2.0 M HNO3 at 25.0 C is mixed with 75.0 mL of 2.0 M NaOH also at 25.0 C in a…

A: The balanced equation is   NaOH + HNO3 ------> >NaNO3 (aq) + H2O (l)Number of moles of NaOH =…

Q: 11. Given the thermochemical equations, calculate the heat of reaction at 298 K for the reaction of…

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Q: 1. Nitrogen and oxygen gas combine to form nitrogen oxide acc.to the ffg reaction: N +20 2(g) 2(g)…

A: According to Hess's law enthalpy of reaction remains the same whether the reaction takes place in…

Q: Using the law of Dulong and Petit, determine the molar mass of an unknown metal with a specific heat…

A: Specific heat, c = 0.900J/gK Gas Constant,R = 8.314J/Kmol Specific heat = 3R/ M M is molar mass

Q: Nitric acid, HNO3, can be prepared by the following sequence of reactions:4NH3(g) + 5O2(g) ⟶ 4NO(g)…

A: Here we have a multi-step reaction:

Q: A copper cube measuring 1.53 cm on edge and an aluminum cube measuring 1.66 cm on edge are both…

A: Edge length of Cu Cube = a = 1.53 cm  Volume of Cu cube = a3 = (1.53 cm) 3   = 3.58 cm3 Density of…

Q: The oxidation of nitric oxide (NO(g)) to nitrogen dioxide is a key step in the formation of smog:…

A: To calculate the work done during this reaction, we need to consider the pressure-volume work (PΔV)…

Q: What is the ΔHrxn for the following reaction (not balanced):   ___P4O10(s) + ___PCl5(g)…

A: Given the following balanced thermochemical equations: P4(s) + 6 Cl2(g) -> 4 PCl3(g)…

Q: The atmosphere inside the room has 35 mol of CO2.The temperature decreases by 22°C.Solve for heat (…

A: The total heat absorbed by the CO2 is calculated as shown below. Q=nCO2Cm∆T

Q: The decomposition of hydrogen peroxide, H2O2, has been used to provide thrust in the control jets of…

A: To determine how much heat is produced by the decomposition of 1.25 moles of H2O2 under standard…

Q: A 5.18 g sample of aluminum, initially at 53.6 °C, is submerged into 25.1 g of ethanol at 18.5 °C in…

A: Given: Mass of Aluminium = 5.18 g  Initial temperature = 53.60C  Mass of ethanol = 25.1g

Q: Aqueous solutions of barium chloride (BaCl) and sodium carbonate (Na2CO3) react to form solid barium…

A: Given: The volume of the 0.200 M barium chloride added = 100 mL The volume of the 0.150 M sodium…

Q: Part A The optimum drinking temperature for a Shiraz is 15.0 °C. A certain bottle of Shiraz having a…

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Q: According to the following thermochemical equation, if 400 g of SO3 is produced, how much heat is…

A: The amount of heat released can be calculated from the moles of SO3 produced and ∆H of reaction.

Q: The balanced combustion reaction for C,H, is 2C,H,(1) + 15 0,(g) → 12 CO,(g) + 6 H,O(1) + 6542 kJ If…

A: Mass of C6H6 = 8.000 g  Molar mass of C6H6 = 6 (12 g/mol) + 6 (1 g/mol) = 78 g/mol Moles of C6H6 =…

Q: 10. P4(s) + 5 02 (g) → P4010 (s) AHran = - 2967.3 kJ/mol rxn Tetraphosphorus is reacted with 20.0…

A: heat released by the reaction is equal to the heat gain by the water  Q = MS∆T Q = heat transfer M =…

Q: Compounds of boron and hydrogen are remarkable for their unusual bonding and also for their…

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Q: What is the change in the internal energy of a gas that absorbs 225J of heat and expands from 10.0L…

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Q: Use Hess’s Law to calculate the ΔH°rxn for the chemical reaction below, the combustion of 1 mole of…

A: The combustion of propane can be represented by the chemical equation: C3H8(g) + 5O2(g) → 3CO2(g) +…

Q: The standard heat of formation of H2O(g) is -241.8 kJ/mol. Determine AHexn (in kJ) for the reaction:…

A: Hess's law  states that the amount of heat evolved or absorbed in a process is independent of the…

Q: B, Given the following thermochemcial equation: S(s) + 3/2 O2(g) > SO2(g)\Delta H = -148.5 kJ. Write…

A: Given compound is,Potassium hydroxide (KOH)

Q: According to the following thermochemical equation, if 1.902 kg of NO2 is produced, how much heat is…

A: The thermochemical equation given as, => 2 NO (g) + O2 (g) ---> 2 NO2 (g)…

Q: The molar heat capacity at constant pressure for CO2 is 36.61 J mol-1 K-1. How much heat in J is to…

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Q: Another option to substitute gasoline is methanol (CH3OH, which is used in certain high-performance…

A: Given that: Mass of methanol is 1.00 kgMolar heat capacity of liquid methanol is 81.6 J/ K molmolar…

Q: The standard heat of formation of solid potassium permanganate is -813.4 kJ. Write the chemical…

A: Standard formation reaction is the reaction in which 1 mole of the species are forming from the…

Q: When a 4.4 g metal ball at 15 °C is placed in 15 g water at 75 °C the final temperature is 74 °C.…

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Q: Energy in the amount of 5.0 J his attitude 0.50 g pieces of aluminum copper and magnesium that are…

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Q: n the thermochemical equation 2502la) + Ozlal – 2503lal. AHnen -198 kJimol, how much heat is evolved…

A: Molar mass SO2 is 64.066

Q: In the following reaction, how many moles of CH₃OH are required to produce -1761 kJ of heat? 2 CH₃OH…

A: Given, the chemical reaction as follows,2CH3OH(l)+3O2(g)→2CO2(g)+4H2O(g)  ,   ∆H° =-1280 kJwe are…

Q: Consider a balloon filled with 2115 L of helium at 1.00 atm pressure and 45.5°C. The temperature of…

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Q: 3. Given the thermochemical equation: SO₂(g) + O₂(g) → SO3(g) AHxn =-99 kJ Calculate how much heat…

A: Note: Since you have posted multiple questions, we will provide the solution only to the first…

Q: The thermochemical equation for the reaction is shown below: 4 Al(s) + 3…

A: The given thermochemical reaction is,                   4 Al(s)  +  3 O2(g)  →  2 Al2O3(s)…

Q: The atmosphere inside the room has 35 mol of Co(2). The temperature decreases by 22 °C. Solve for…

A: Given: Number of moles of CO2=35 mol Decreased temperature=22°C Heat capacity of carbon…

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains…

A: Given : Mass of water = 4.70 Kg = 4700 g…