N2(g) + 3 H2(g) → 2 NH3(g);  ΔH = −91.8 kJ How much heat is released when 1.521 ✕ 104 grams of ammonia is produced?

Q: if a system does 25 J of work on its surroundings and is cooled by 35 J, what is the net energy…

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Q: If a system absorbs 155 kJ of heat from its surroundings and the system does 53 kJ of work on its…

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Q: 3. When a 58.8 g piece of hot alloy is placed in 125 g of cold water (C = 4.184 J/g-°C) in a…

A: Given data,  Mass of hot alloy(ma) = 58.8 g  Mass of cold water (mw) = 125 g  The temperature change…

Q: What mass of methane must be burned to release 185 kJ of heat?

A: Given , CH4(g) +2O2(g) →CO2(g) +2H2O(g)      ∆Hrxn=-890 kJmol

Q: If a system absorbs 155.0 kJ of heat from its surroundings and the system does 45.0 kJ of work on…

A: Internal energy of a system is the overall energy that belongs to the system.  Heat is denoted by…

Q: If a system has 49.5 J of heat added to it, and the system does 75.5 J of work on its surroundings,…

A: According to the first law of thermodynamics, the relationship between work, heat and change in…

Q: How much heat is evolved when 453.5 g of ammonia (NH3) is produced according to the following…

A: Given Reaction is - N2 (g) + 3H2 (g) → 2NH3 (g)                  ΔH= -91.8 kJ

Q: How much heat is required to raise the temperature of 250.0 g of lead by 52 degrees C?

A: We have given that  mass of lead = m =250g ∆T = 52°C specific heat for lead = C = 0.16 J/g°C To find…

Q: A system releases 689 kJ of heat and does 105 kJ of work on the surroundings. ▾ Part A What is the…

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Q: what is the amount of internal energy (in joules) for a system that has performed 1478.714 J of work…

A: The internal energy of a system can be changed in two ways: (i) By allowing heat to flow into the…

Q: How many kilojoules of heat are released when 38.2 g of CH4 (g) reacts completely with O2 (g) to…

A: mass of CH4 = 38.2 g Chemical reaction - 2CH3OH → 2CH4 + O2                H = +252.8 kJ

Q: After absorbing 1.690 kJ of energy as heat, the temperature of a 0.500-kg block of copper is 43 °C.…

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Q: If 1495 J of heat is needed to raise the temperature of a 333 g sample of a metal from 55.0°C to…

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Q: Substance Specific Heat Capacity (in J/g x °C) Iron 0.449 Aluminum 0.897 Lead 0.129 4. Using the…

A: Given : Initial temperature of substance = 20 oC Final temperature of substance = 30 oC And equal…

Q: 3) The addition of CO2 to a solution containing calcium ions can lead to the formation of insoluble…

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Q: What is the change in internal energy of a system that has 275 kcal of work done to it and it…

A: Internal energy is a function of the volume and the temperature. In a closed system of constant…

Q: If 50.0g of benzene, C6H6, at 25.0c absorbs 2.71kJ of energy in the form of heat, what is the final…

A: The mass of benzene is = 50.0 g The initial temperature of benzene is = 25oC The amount of heat…

Q: If 2.0 KJ of heat energy raises the temperature of a calorimeter containing 45.0 g of water from…

A: 2.0 KJ of heat energy raises the temperature of a calorimeter containing 45.0 g of waterfrom 23.0°C…

Q: 2. A sheet of gold weighing 10 g and at a temperature of 18.0°C is placed flat on a sheet of iron…

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Q: How much heat (in kJ) is required to raise the temperature of a 525.0 mL sample of water from 22.1 C…

A: The heat required to raise the temperature is directly proportional to the mass of sample and the…

Q: A piece of a metal of a mass 4.68g absorbs 256J of heat when its temperature increases by 182C. What…

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Q: The reaction between sodium metal and chlorine gas produces 822 kJ of heat energy for every chlorine…

A: The balanced reaction taking place is given as, => 2 Na (s) + Cl2 (g) -----> 2 NaCl (s)…

Q: 1. How much work was done when 46 kJ of energy was spent on compressing a gas as it released 28 kJ…

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Q: What is the specific heat of lead if it takes 97.8 JJ to raise the temperature of a 75.1 g block by…

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Q: What is the change in energy (in J) for a system that lost 344 J of heat to the surroundings, and…

A: Assume that work (w) is done on the system, so w will be positive.Given:Heat lost, Q  = - 344 JWork…

Q: What is the heat capacity of 265 grams of water? The specific heat of water is 4.184 J/g °C.

A: • The values provided in the question are:-  i) Mass of water, m = 265 g  ii) Specific heat capacity…

Q: КОН, heat ETOH H,0(1), heat CH2 NH,(aq), heat HCN, heat ETOH KOH(aq), heat

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Q: If a system absorbs 155 kJ of heat from its surroundings and the system does 45 kJ of work on its…

A: Given, Amount of heat absorbs by the system q = 155 kJ work done by the system W = 45 kJ We are…

Q: What is the specific heat of lead if it takes 98.0 J to raise the temperature of a 75.4 g block by…

A: Given :- heat absorb = 98.0 J  mass of lead block = 75.4 g  change in temperature of block = 10.5°C…

Q: )How much will the temperature of a cup (180 g) of coffee at 95 °C be reduced when a 45g silver…

A: Specific heat capacity is defined as the amount of heat required to raise the temperature of 1…

Q: 1. A 275 J of work is done on a system that evolves 90 J of heat to the surroundings. a. What is the…

A: According to the first law of thermodynamics, the energy of the universe remains constant. For the…

Q: What is the heat capacity of a substance if it takes 6.9 kJ of heat to warm 396.1g by 30.6 C?

A: Heat capacity ( c ) is the quantity of heat energy required to increase the temperature of a…

Q: Calculate the temperature change when 7.52J of heat is released in a calorimeter having a heat…

A: Given,  Heat released = q = 7.52 J  Heat capacity of calorimeter = C = 470 J/°C  Temperature change…

Q: You add some of the white crystals to a small test tube filled with water. The water in the test…

A: This can be calculated by specifi heat formula, CP = (dH/dT)P dH = Enthalpy change  dT = Temperature…

Q: What is the specific heat (c) of a metal if the temperature of a 15.5g sample increases from 29.5℃…

A: The amount of heat required to increase the temperature of one kilo gram of a substance by one…

Q: How much heat is required to raise the temperature of 125 g of water by 10.0ºC? The specific heat of…

A: Given  Mass of water        (m)        = 125 gram  Temperature difference ( ∆T )  = 10 ℃ Specific…

Q: How much heat is released in kJ when 2.50 mol of O2 reacts completely with methane?

A: The combustion of methane reaction is given as: CH4(g) + 2O2 (g) → CO2 (g) + 2H2O (l)   ΔH = −890.3…

Q: How much heat (kJ) is released by a 200-gram piece of silver as it cools from 1023°C to 300°C?

A: Given :-  Mass of piece of silver (m) = 200 g  Initial temperature (T1) = 1023°C  Final temperature…

Q: When 36 g of a metal at 89 C is added to 48 g of water at 27 C, the temperature of the water rises…

A: specific heat (Q) =m x S x  ΔT MASS =m SPECIFIC HEAT =S CHANGE IN TEMPERATURE=ΔT

Q: Nitrogen monoxide, a gas recently found to be involved in a wide range of biological processes,…

A: Exothermic reaction: When heat is evolved by the system i.e. the value of ∆H°rxn is negative.…

Q: If a system absorbs 155.0 kJ of heat from its surroundings and the system does 75.0 kJ of work on…

A: Answer :-  The change in internal energy of the system is  +80.0 kJ.…

Q: 2. Carbon tetrachloride can be formed by reacting chlorine with methane: CH4 + 2 Cl2 → CCL4 + 2 H2…

A: CH4 + 2Cl2-----> CCl4 +2H2 ∆Hof (CH4) = -75 kJ/mol ∆Hof (CCl4 ) = -135 kJ/mol

Q: A system absorbs 196 kJ of heat and the surroundings do 117 kJ of work on the system. What is the…

A: Given  Heat absorb by system , q = + 196 kJ Work done on the System , w = + 117 kJ By First law of…

Q: If a system absorbs 155.0 kJ of heat from its surroundings and the system does 35.0 kJ of work on…

A: Since we know that according to the first law of Thermodynamics ∆E = q + w  Where , ∆E = change in…

Q: specific heat of gold is 0.129J/g C. what is molar heat capacity of gold?

A: The Question is about to calculate the Molar Heat Capacity of Gold -

Q: A piece of solid substance weights 4.0 g, and requires 150 J to increase its temperature from 30.0…

A: The certain heat energy amount that is applicable in the enhancement of substance's temperature per…

Q: Aluminum and iron samples, each weighing 2 kg, absorb 11.5 kJ of heat. Which material would have the…

A: The amount of heat required to increase the 1oC temperature of 1 g metal is known as the specific…

Q: Calculate the temperature change when 5.76J of heat is released in a calorimeter having a heat…

A: Heat release= heat capacity* rise in temperature

Q: 5. A system compresses when 457 J of work was done on it at the same time it decreases it energy to…

A: Given,  A system 457 J of work done when it compresses, at the same time it decreases energy to 234…

Q: 4. Determine the final temperature of water if 9.2 kJ of heat is added to 250 mL of 17°C water (the…

A: