Iron can react with oxygen to give iron (III) oxide. If 5.58 g of Fe is heated in pure oxygen to give Fe2 O3 , how much thermal heat is transferred of the system?( at constant pressure).

Q: A small piece of calcium carbonate was placed in a constant-volume calorimeter (Ccal=0.488  kJ/°C),…

A: Given data :  1. Ccal=0.488 kJ/°C 2. Change in temperature = 3.5 oC

Q: A 5.52E1 g sample of water at 9.973E1 °C is placed in a constant pressure calorimeter. Then, 2.32E1…

A:

Q: How many grams of methanol must be combusted to raise the temperature of 377 g of water from 23.5°C…

A: This problem is based on combustion of methanol.

Q: A piston compresses the air in the cylinder by doing 84J of work on the air. As a result, the air…

A: Given,  What is change in internal energy = ΔU = ?

Q: a system performs 274.0 Joules of expansion work while absorbing 168.0 joules of heat. how many…

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

Q: 1.63 Ib of gas is stored in a tank of 2ft3. If the internal energy decreases by 27.4 BTU as…

A: Mass of gas = 1.63 lb  Initial temperature = 200 F  Final temperature = 100 F  Change in energy = -…

Q: Calculate the molar heat capacity of iron in J·mol-1·°C-1. Its specific heat is 0.4498 J·g-1·°C-1.

A:

Q: Butane, C4H10, is widely used as a fuel for disposable lighters. When one mole of butane is burned…

A:

Q: An automobile engine provides 545 Joules of work to push the pistons and generates 2395 Joules of…

A:

Q: 4. A system receives 75 J of electrical work, delivers 274 J of expansion work, and absorbs 168 J of…

A: Givens :   Work done by the system ,                         W   = 274 joules Heat absorbed by the…

Q: The standard heat of combustion of propanol, C3H7OH, is 2021 kJ/mol. How much heat would be…

A: Number of moles of any substance can be calculated by dividing the mass of the substance with its…

Q: A 30.5-g sample of an alloy at 93.0oC is placed into 50.0 g of water at 22.0oC in an insulated…

A: Given that, Mass of alloy, Malloy = 30.5 g = 0.0305 Kg Initial temperature of alloy, Tinitial-alloy…

Q: . What is the change in internal energy of the system (AU) if 82 kJ of heat energy is absorbed by…

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

Q: What is the ΔHsoln for KF?

A:

Q: During a certain chemical reaction 270 J of heat is absorbed by the system and 500 J of work is done…

A: △U = q-w  ∆U = change in internal energy q = heat absorbed by the system w = work is done

Q: The specific heat capacity of benezene (C6H6) is 1.74J/g.K. What is its molar heat capacity (in…

A: Molar mass of benzene is 78.11 g/mol

Q: During an isothermal compression of an ideal gas, 410 J of heat must be removed from the gas to…

A: Since 410 J of heat is removed from the gas, Hence heat transfer (q) = - 410 J Since the compression…

Q: A 30.5-g sample of an alloy at 93.0°C is placed into 50.0 g of water at 22.08C in an insulated…

A: Given: Mass of the sample= 30.5g= 0.0305 kg Initial temperature= 93°C= 366K Mass of water= 50g=…

Q: A balloon is inflated with air from an initial volume of 1.44E-1 L to 2.16E0 L against an external…

A:

Q: 9. A diamond weighing 310 mg requires 2.38 J to raise its temperature from 23.4°C to 38.7°C. A.…

A: Specific heat capacity of the elements are given by ratio of amount of heat absorbed to the mass of…

Q: What is the change in internal energy of a system that absorbs 600 KJ of heat energy at the same…

A: Given,  a system that absorbs 600 KJ of heat energy at the same time does 450 KJ of work. Therefore,…

Q: A 13.6 g metal block is warmed to 79.7°C and plunged into an insulated calorimeter containing 46.2 g…

A:

Q: A 237-g piece of molybdenum, initially at 100.0 Cis dropped into 244 g water at 10.0 degrees * C .…

A: Heat released by Molybdenum = Heat absorbed by water mMbcMb (T1 - T3) = mwcw (T3 - T2) Given…

Q: For a process, 153 J of heat was released by the system and 267 Jof work was done on the system.…

A:

Q: Given a system that absorbs 500 kJ of heat while doing 400 kJ of work, find the change in its…

A: Dear student since you have asked multiple questions but according to guidelines we will solve 1st…

Q: A gas is compressed in a piston with 8.80E1 J of work. As a result, 4.2E1 J of heat is given off to…

A: Solving only first question in accordance with the guidelines. We will answer this question using…

Q: A piece of metal of mass 12 g at 107 ◦C is placed in a calorimeter containing 55.7 g of water at…

A: Given : Mass of water = 55.7 g Mass of metal = 12 g Initial temperature of water = 20 oC Final…

Q: done against the system during compression of a gas, at the same time 385 J of heat is released from…

A: Answer  Apply 1st law  of thermodynamics  U  =  Q + W

Q: 5. 25 cm3 of 1.0 M hydrochloric acid and 25 cm3 of 1.0 M sodium hydroxide solution both at initial…

A: Q = m . s . (T2 - T1) Molar heat of neutralization = Q/Numbe of moles of acid or base Number of…

Q: An automobile engine provides 550 joules of work to push the pistons and generates 2120 joules of…

A: ∆W = -550 J (negative sign because the system is doing work) ∆Q = -2120 J (negative because heat is…

Q: A chemist mixes 1.00 g CuCl, with an excess of (NH4),HPO4 in dilute aqueous solution. He measures…

A: Number of moles of CuCl2 is determined as follows, No.of mol=MassMolar mass=1.00 g134.45…

Q: An automobile engine provides 646 Joules of work to push the pistons and generates 2258 Joules of…

A: According to the thermodynamics law  ∆U = Q + W Given Work done on the piston = - 646 J Heat…

Q: The internal energy of a gas decreases by 1.65kj when it transfers 1.87kj of energy in the form of…

A: Interpretation: The work done on the gas by the surroundings is to be determined. Concept…

Q: Imagine that a chemist wants to quantify the heat of reaction (ΔHrxn) for the following reaction…

A:

Q: Consider the following four cases: (i) A chemical process in which heat is absorbed, (ii) A change…

A: Given here four cases and we are asked in how many of these cases does the internal energy of the…

Q: chemical reaction requires 369.42 kJ of heat and performs 73.7 kJ of work on the surroundings. What…

A:

Q: a system receives 75.0 joules of electric work, delivers 274.0 joules of expansion work and absorbs…

A: A system receive 75 joule of electric work amd deliver 274 joule of expansion work and it absorb 168…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 566.0 mg sample…

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

Q: For the highly exothermic reaction H2(g) + 1/2 O2(g) → H2O(g) qrx =DHrx = -242 kJ, What quantity of…

A: Given: no of moles of H2 =17.9molno of moles of O2 = 1.13 molThe reaction is:H2(g) + 1/2 O2(g) →…

Q: 4. A 505 gram piece of copper tubing is heated to 99.0 °C and placed in an insulated vessel…

A: Heat capacity: The amount of heat required to increase the temperature of a substance by one-degree…

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

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: Suppose that the molar enthalpy of a reaction is 56.94 kJ/mol and 16.89 kJ of heat are absorbed by…

A: The amount of heat required to raise the temperature of the sample is given by: q = mc∆T 'q' is the…

Q: An automobile engine provides 551 J of work to push the pistons and generates 2250 J of heat that…

A: According to first law of thermodynamics, the change in internal energy of a reaction is equal to…

Q: Consider the specific heat capacity of the following metals. Metal Specific heat capacity ( J/ kg K)…

A: We have to predict the metal.

Q: What is the molar heat capacity of liquid water?

A: Molar heat capacity of a substance (sm) is calculated by multiplying the specific heat capacity (c)…

Q: What is the heat capacity (Cp) of a 7.5 g piece of tin if its temperature changes by 12.3°C when it…

A: Given that  Heat (Q) = 20 J  Change in temperature (∆T) = 12.3°C  Mass of tin (m) = 7.5 g

Q: A system initially at 1.50L changes its volume under an external pressure of 0.988atm while…

A: Given data:

Q: the difference between changes in enthalpy and internal energy for the explosion of…

A: Nbh

Q: A change in a system occurs such that 31.1 J of work is done by the surroundings and 22.4 J of heat…

A: Internal energy is the stored energy of the system. From the first law of thermodynamics it is clear…

Q: A Bar Of Aluminum Of Mass 45.5g Is Heated From 293K To 85°C. How Much C Heat Is Absorbed By The…

A: Since you have asked multiple questions, we will solve the first question for you. If you  want any…