The heat of combustion of butane is -2877 kJ/mol. Use this value to find the heat of formation of butane.

Q: how many millimoles of ethanol would need to be burned to generate 8370 joules of energy? the heat…

A: Heat of combustion is defined as the heat released when 1 mole of reactant is combusted. Hence, heat…

Q: The complete combustion of a small wooden match produces approximately 512 cal of heat. How many…

A: Given, The approximate amount of heat produced by the combustion of a small wooden match = 512 cal…

Q: A work of 657 J is done on a system that releases 434 J of heat. What is the energy change in the…

A: According to first law of thermodynamics, internal energy of the system is equal to the sum of work…

Q: Propane (C3H8 readily undergoes combustion. When 1.00 kg of propane is burned, how much heat is…

A: Combustion of propane can be represented as C3H8 (g) + O2 (g) ---------> 3 CO2 (g)  +4 H2O (l)…

Q: A sample of aluminum metal absorbs 9.86 J of heat, upon which the temperature of the sample…

A: Using the following equation, the mass of the metal is calculated.

Q: what is the anwser to  A student heats a 200 g sample of water from 20oC to 80oC. The specific heat…

A: The answer to the following question is-

Q: 1) The three combustion reactions are: C(s, gr) + O>(g) --> CO,(g) AH =-393.50 kJ H,(g) + ½0,(g)…

A: Solution:    The change in enthalpy of formation is the enthalpy change when the formation of one…

Q: Tin has a specific heat of 0.21 J/g°C. If a 3.2 kg sheet of tin absorbs 8.4 kJ of energy, by how…

A: According to the equation, Q=mcdTQ=heat absorbedm=mass of substancedT= change in…

Q: A chemist placed a 1.195 g sample of fuel in a bomb calorimeter which was immersed into 2.00 L of…

A: The mass of the fuel sample is = 1.195 g The increase in the temperature of the water is = 20.1oC to…

Q: The specific heat of an unknown metal is calculated to be 3.74J/g*C. What is the mass of the sample…

A: Answer is explained below.

Q: (d) Consider the complete combustion of Benzene (CeH6). If the density of benzene is 0.88 g/mL, what…

A: Given reaction is : 2C6H6 (l) + 15 O2 (g) ----------> 12CO2 (g) + 6H2O (g) , ΔH0rxn = -6278 KJ…

Q: The mixture of gas and air inside a cylinder reacts, releasing 400 kJ of total energy. If the system…

A: 150 kJ of heat is released from the system

Q: The temperature of a brass bar by 10.0°C when it absorbs 2.00kJ of energy by heat. The mass of the…

A:

Q: Consider the following reaction: 2 Al (s) + Fe2O3 (s) → 2 Fe (s) + Al2O3 (s)    ΔH = -850 kJ What…

A: Given the chemical reaction as follows,2 Al (s) + Fe2O3 (s) → 2 Fe (s) + Al2O3 (s)   ;  ΔH = -850…

Q: If 801 J of heat is available, what is the mass in grams of iron (specific heat = 0.450 J/g•°C) that…

A: Given,  specific heat = 0.450 J/g.oC heat = 801 J , mass = ? , ∆T= 120°C - 22.5°C = 97.5°C

Q: In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used…

A:

Q: A metal object with a mass of 19 g is heated to 96°C and is transferred to a calorimeter containing…

A: Given data: The mass of metal = 19 g. The temperature of the metal =  96°C. The mass of water = 75…

Q: The energy absorbed by a certain system is -130 kj . If the system does 90kj of work on the…

A:

Q: When 514 J of heat is added to a sample of liquid water, the temperature rises from 27.8°C to…

A: Specific heat capacity is the amount of heat needed to raise the temperature(usually 1°C) of given…

Q: 3. 842 J of works was done for a gas to be compressed. At the same time, it releases 451 J of heat.…

A: Given -> Work = +842 J ( work done on the system) Q = -451 J ( heat released)

Q: For the combustion of methane(CH4)   CH4 (g)  + 2 O2 (g)  -->  CO2 (g) + 2H2O (g)       Δ H = -882…

A: In a thermochemical equation, the term, ∆H , represents the change in heat energy per mol reaction.…

Q: In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used…

A: CALCULATION OF SPECIFIC HEAT CAPACITY

Q: 105 The heat change that accompanies the formation of 1.00 mol of carbon dioxide from its elements…

A:

Q: If a system does 73.0 kJ of work on its surroundings and releases 105 kJ of heat, what is the change…

A:

Q: What are the internal energy changes, ∆E, if a system; (a.) absorbs 67 J of heat and does 67 J…

A: Answer to all the parts are given below.

Q: If 171.4 grams of water must be heated from 8.00°C to 85.0 °C to make a cup of tea, how much heat…

A: The solution is as follows :

Q: what is the mass in grams of iron

A:

Q: A gas sample does 214 J of work upon expanding and the cools, losing 34 J of heat. What is the total…

A: The first law of thermodynamics is given asΔU=Q−W, Δ U = Q − W , whereΔU is the change in internal…

Q: In the laboratory a student finds that it takes 666 Joules to increase the temperature of 10.7 grams…

A: The heat required (q) to raise the temperature of 'm' g of a substance is given as: q=mc∆Twhere, c…

Q: What is specific heat? Write the specific heat of water. What is the standard enthalpy?

A: Specific heat and standard enthalpy are related to the concept of thermodynamics. Heat is also known…

Q: How much heat is required to raise the temperature of 25g of water from 25.0°C to 30.0°C? The…

A: Mass of water, m = 25 g Specific heat of water, Cs = 4.184 J/g °C Initial Temperature, Ti = 25 °C…

Q: What is the specific heat of solid iron when a 15.75 gram sample gains 1,086.75 Joules of heat…

A: The calorimetry method is used the find the total amount of heat transferred in a system. In this…

Q: How much thermal energy (in joules) is required to heat 18.1 g of a metal (specific heat = 0.397 J/g…

A:

Q: 1. A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and is temperature changes from…

A: Since you have posted multiple questions, we will solve only the first question for you according to…

Q: .A sample of solid sodium was reacted with chlorine gas to give 4.36 g of pure NaCl.  The energy…

A: Heat of formation of a compound is the heat change when one mole of that particular compound formed…

Q: If a system does 84.0 kJ of work on its surroundings and releases 105 kJ of heat, what is the change…

A: According to FLT , Change in internal energy = Q + W

Q: specific heat

A:

Q: The complete combustion of propane, C3H8 (g), is represented by the following unbalanced equation…

A:

Q: When 2 mol of potassium chlorate crystals decompose to potassium chloride crystals and oxygen gas at…

A: A thermochemical equation for a given reaction can be defined as the balanced stoichiometric…

Q: In an experiment, 26.5 g of metal was heated to 98.0°C and then quickly transferred to 150.0 g of…

A:

Q: 1.What is the specific heat of a metal whose mass is 94.5 g if the temperature changes from 250° to…

A: The heat required to raise the temperature of a sample of mass 'm' having specific heat 'c' from T1…

Q: What is the energy change of a system as it does 12 J of work and absorbed 27 J of heat?

A: To calculate the energy change of the system if the work done by the system is 12 J and it absorbs…

Q: In the laboratory a student finds that it takes 706 Joules to increase the temperature of 13.3 grams…

A: The mass of water is = 13.3 g The increase in the temperature of the water is = (36.4-23.0)oC =…

Q: If 801 J of heat is available, what is the mass in grams of iron (specific heat = 0.450 J/g °C) that…

A: For the first question simply it follows the  q= ms∆t equation.   For the second one it is the case…

Q: Iron bar of mass 869 g cools from 94 degree C to 5 degree C. Calculate the heat released by the…

A: Given : Mass of iron = 869 g Initial temperature of iron = 94 oC And final temperature of iron = 5…

Q: The heat of combustion for ethane, C2H6, is 47.8 kJ/g. How much heat is produced if 9.0 moles of…

A: Mass of ethane is calculated as,

Q: How much energy is evolved as heat when 0.1 L of water at 0 degrees celcius solidifies to ice. (The…

A: The density of water at 0oC is 0.99987 g/mL. The mass of 0.1 L of water at 0oC is; 1.0 L=1000.0…

Q: Consider the reaction: 2C4H10g) + 1302(g) 8CO28) + 10H20(), AH = -5756 kJ When a 0.571 mol of C4H10…

A:

Q: The internal energy of a system increased by 982 J when it absorbed 492 J of heat. Was work done by…

A: When a system absorbs energy it means work done on the system, We know that, ∆U=982 Jq=492 J…

Q: If a system does 62.0 kJ of work on its surroundings and releases 105 kJ of heat, what is the change…

A: Ca (s)  + 1/2 O2  (g)  -------> CaO (s)    ΔH°=-635kJ/mol to get desired equation we have to…