Hess's law, to 285.8 kJ -174.1 kJ - 28.4 kJ

Q: Consider these reactions: Reaction 1: H2 (g) + Cl2 (g) → 2HCI(g) AH = -184.6 kJ %3D Reaction 2: 20F2…

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Q: The heat capacity of silver (Ag, 107.9 g mol-1), is 0.232 Jg K-1. Calculate the energy needed to…

A: Given:-         Heat capacity CP=0.232 J/g‐K                                      q=?        No.…

Q: A sample of solid gold is heated with an electrical coil. If 15.3 Joules of energy are added to a…

A: q = mc∆T  q is the amount of heat energy absorbed m is the mass of substance  c is the specific heat…

Q: A 45.61 g sample of a substance is initially at 24.6 °C. After absorbing 2495 J of heat, the…

A: Mass of sample m = 45.61 gramInitial temperature T1 = 24.6 °CFinal temperature T2 = 119.5 °CHeat…

Q: Calculate the change in internal energy and indicate whether the energy of the system has increased…

A: #2: The change in internal energy(∆U), heat(q), and work done(w) are related through the 1st law of…

Q: The AE of a system that absorbs 252.4 J of heat and has 120.8 J of work done on it by the…

A: According to first law of thermodynamics  ∆E=Q-W where  Q = heat absorbed by system              W =…

Q: A chemical reaction in a bomb calorimeter produces 5.17 kJ of heat. If the heat capacity of the…

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Q: What is the change in energy of a gas at a pressure of 135 kPa, if the gas loses 250 J of energy as…

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Q: Consider these reactions: Reaction 1: H2 (g) + Cl2 (g) 2HCI(g) AH =-184.6 kJ %3D Reaction 2: 20F2(g)…

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Q: A 55.0kg sample of an unknown metal X requires 675kof energy to heat it from 25.0 to 118.0C. What is…

A: The mass of an unknown sample is 55.0 kg. The initial temperature is 25.0˚C. The final temperature…

Q: What is the change in internal energy for a system if the system absorbs 322 kJ of heat and has…

A: Given that: Work done on the system (W) = 750.0 kJ Heat absorbs (q) = 322 kJ (since heat is…

Q: how to write the enthalpy cycle?

A: The previous answer has shown all the necessary calculations and enthalpy changes.  In case you want…

Q: 21) A 4.50-g sample of liquid water at 25.0 °C is heated by the addition of 112 J of energy. The…

A: To solve this problem, we can use the formula: q = mcΔT where q is the heat energy absorbed by the…

Q: System Calorimetry Determine the final temperature of a system when 100.g of water at 82.7-C is…

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Q: How did you calculate to get 17.6 KJ

A: Here, clausis clapeyron equation is used to calculate the heat and by putting all the values, heat…

Q: Discuss the definition of the terms exothermic and endothermic. Give an example of an thermochemical…

A: The exothermic reaction is the reaction that releases heat. The heat of the reactant is higher than…

Q: When NO(g) reacts with O2(g) according to the following reaction, 57.1 kJ of energy are evolved for…

A: Given ,Reaction : Objective : Determine the complete thermochemical reaction.

Q: 6. A 128g piece of Iridium at 95 C is dropped into a 45.2g of water at 17.3 C. The final temp of the…

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Q: A 32.25 g sample of polymer A is initially at 21.4 °C. This substance then absorbs 1,557 J of heat,…

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Q: . A 50.0g sample of water is heated from 25.0 °C to 75.0 °C. Calculate the amouunt of heat energy…

A: In the given question, mass of water is given and the temperature change is given.  We have to…

Q: Determine the enthalpy change in the following equation: 2 NH3(g) → N2(g) + 3 H2(g) AH°f NH3(g)…

A: Chemical equation for the formation of ammonia: 1/2N2  +  3/2H2  ----->  NH3   ∆Hof = -46.11…

Q: 1. Use the given data to answer 1.1-1.3 questions. The reaction is PCI, (g)- Cl, (g) PCI, (g)…

A: Recall the reaction, PCl3(g) + Cl2(g) -----> PCl5(g) ∆H = ?  ∆S = ? ∆G=?

Q: Part D A1.6 kg block of iron at 28 °C is rapidly heated by a torch such that 18 kJ is transferred to…

A: Given that,  Weight of Iron block m = 1.6 Kg Initial temperature of iron block Ti, i = 28°C Final…

Q: 3. Sodium hydroxide gives off 44.5 kJ of heat per mol when dissolved in water. Write the balanced…

A: An EXOTHERMIC ( heat is released) thermochemical reaction equation is written as Reactants…

Q: The specific heat of a certain type of metal is 0.128 J/(g.°C). What is the final temperature if 305…

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Q: When 5.88 g of copper is heated from 17.6℃ to 485.0℃, what is the value of q? The specific heat…

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Q: What is the change in energy of a gas at a pressure of 135 kPa, if the gas loses 250 J of energy as…

A: A gas is compressed from 42.8L to 31.3L at a pressure of 135KPa. The gas loses 250J of energy. What…

Q: A 21.74 g sample of a substance is initially at 24.4 °C. After absorbing 2903 J of heat, the…

A: A numerical problem based on thermodynamics that is to be accomplished.

Q: An automobile engine provides 565 Joules of work to push the pistons. In this process the internal…

A: In this question, we want to determine the amount of heat that must be carried away by the cooling…

Q: 12. The work done to compress a gas is 50 J. As a result, 20 J of heat is given off to the…

A: Work done to gas = +50 J  Heat lost = -20 J

Q: A 28.79 g sample of a substance is initially at 21.2 ∘C. After absorbing 1817 J of heat, the…

A: Introduction The specific heat of any particular metal basically denotes the heat quantity required…

Q: Calculate the energy required to heat 430.0 mg of iron from -2.1 °C to 12.1 °C. Assume the specific…

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Q: A 981.8 g sample of bismuth goes through a temperature change of +46.75 °C while absorbing 784.6…

A: 1. Given :-  Mass of sample of Bi = 981.8 g  Temperature change i.e. ∆T = +46.75°C  Amount of heat…

Q: What is the specific heat of a 74.01g piece of an unkown metal that exhibits a 45.2 Celcius…

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Q: 4.Determine the specific heat capacity of titanium if a 43.5 g sample absorbs 0.476 kJ (476J) as its…

A: Mass of titanium=43.5 gram Absorbed energy=0.47 6KJ=476J Temperature change=32°C-53°C

Q: 55.69 kJ of work are done by the system, which produces 80.17 kJ of heat. Determine the overall…

A: Work done = 55.69 KJ  Heat = 80.17 KJ Overall change in  internal energy = ?

Q: 4. INTERNAL ENERGY OF A SYSTEM a. Calculate the change in the internal energy of a liquid system…

A: According to the first law of thermodynamics, the change in internal energy is given by: ∆E = q +…

Q: What is the change in internal energy for a system if the system absorbs 322 kJ of heat and has…

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Q: Calculate the energy required to heat 249.0 g of aluminum from -3.2 °C to 6.9 °C. Assume the…

A: • The values provided in the question are:-  i) Mass of aluminium, m = 249.0 g  ii) Initial…

Q: 4. In an experiment, 1.010 g of sugar (molar mass = 3423 gmol) gave off 16.7 kJ of hest in a…

A: Heat of combustion : It is defined as the amount of energy released when one mole of a substance is…

Q: When 1 mole of 12(g) reacts with Cl₂(g) to form ICI(g) according to the following equation, 26.8 kJ…

A: Recall the given equation,                                I2 g  +  Cl2 g  →  2 ICl gWhen 1 mole of…

Q: For a process at constant pressure, 6.20 x 10* calories of heat are released. This quantity of heat…

A: Inorder to convert kilocalorie to joule, multiply the energy value by 4184. So, 1 kcal = 4184 J 1…