d) How many kilojoules of heat are released when 38.5 g of CH4(g) reacts completely with O2(g) at constant pressure?

Q: The enthealpy óf coI (C6H5COOH) which is often used to calibrate calorimeters, is-3227 k.J/mol. When…

A: Given, Enthalpy of combustion(∆H) =-3227 kJ/mol Mass of benzoic acid =1.092 g Moles of benzoic acid…

Q: 1. Consider the reaction in which methane CH4(g) is reacts with O2(g) to form CO₂(g) and H₂O(g).…

A: In the given reaction methane CH4 (g) is reacts with O2 (g) to form CO2 (g) and H2O (g)

Q: Given that the molar enthalpy of combustion for propan-1-ol, C3H7OH(l), is –2008.6 kJ/mol,  what is…

A:

Q: if 0.0102 moles reacted and 476.5 J of heat were absorbed by the reaction in a coffee cup…

A:

Q: An aluminum kettle weighs 1.05 kg.(a) What is the heat capacity of the kettle?(b) How much heat is…

A: Specific heat- It is the amount of heat required to raise the temperature of 1g of substance by 10…

Q: . (a) We place 77.7 g of a metal at 10.00 ◦C in 333.3 g of water at 70.00 ◦C. The water is in a…

A: Dear student, we are authorised to solve only one question at a time. Please post rest of the…

Q: 5(b)

A: The heat in a calorimeter, qcal is given as :

Q: 7) When 0.180 mole of sodium nitrate, NaNO, was dissolved in water in a constant-pressure…

A:

Q: In the lab you measured the quantity of heat evolved when 0.20 g of Mg was placed in 100 ml of 1M…

A: The reaction taking place in case of Mg is given as, => Mg (s) + 2 HCl (aq) -------> MgCl2…

Q: if 0.0221 moles reacted and 633.2 J of heat were absorbed by the reaction in a coffee cup…

A: We will calculate the enthalpy of reaction using relation between heat and enthalpy

Q: When 20.0 g of aqueous solution B(aq) at 22.0°C is added to 60.0 g of aqueous solution A(aq), also…

A: Given that,The mass of the aqueous solution of B is 20.0 g.The mass of the aqueous solution of A is…

Q: You mix 125ml of 0.180 m csoh with 50.0 ml of 0.450 m hf in a coffee cup calorimeter and the…

A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…

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: Using the information provided, determine the enthalpy (in kJ/mol) for the reaction C₃H₈ (g) + 5 O₂…

A: Given,            ∆Hf°C3H8(g) = -108.4  KJ/mole.             ∆Hf°O2(g) = 0  KJ/mole.…

Q: To make the perfect cup (approximately 252.6 mL) of hot chocolate, you are searching for a…

A: The mass of the 252.6 mL of chocolate, having a density of 1.06 g/mL, is;…

Q: When 23.6 g of calcium chloride, CaCl, was dissolved in water in a constant-pressure calorimeter,…

A: The mass of calcium chloride is = 23.6 g Increase in the temperature of the calorimeter is =…

Q: If the reaction of 2.5 g of Ca transfers 487 J of heat to a solution in a calorimeter (i.e. qsoln =…

A: Given : Mass of Ca reacting = 2.5 g And amount of heat transferred to the solution = 487 J Atomic…

Q: A 63.5-g piece of an unknown metal is heated to 92.40°C and quickly added to 100.0 g of water in a…

A: Given, mass of unknown metal, mu=63.5 g initial temperature of metal, Tiu=92.40°C mass of water,…

Q: When 23.6g of calcium chloride, Was dissolved in water in a constant pressure calorimeter, the…

A: For heat capacity ,heat and temperature ,there is a relation for all: q=c×△TWhere:q= Heat…

Q: chemical reaction has a negative enthalpy of reaction (-ΔHrxn) What does this tell you about the…

A: We have to find which option is correct

Q: (b) Calculate the gross calorific value of a coal from the following data: Mass of coal = 0.25 g,…

A:

Q: Consider the reaction of chlorine with water vapor, H₂O(g) to form hydrogen chloride and oxygen: 1/2…

A: Enthalpy change of a reaction is a state function. If we reverse a chemical reaction than the sign…

Q: 1. During an experiment, a student added 35 J of heat to a system. At the same time, the environment…

A: According to first law of thermodynamics , increase in internal energy of the system is given by ∆U=…

Q: During an experiment, a student adds 1.23 g Ca0 to 200.0 mL of 0.500 M HCI. The student observes a…

A: Generally the heat released in the reaction is absorbed by the solution and raises the temperature…

Q: Using standard heats of formation, calculate the standard enthalpy change for the following…

A:

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: Is the dissolving of ammonium chloride an endothermic or exothermic process?

A: From the above data we are supposed to find whether it is a endothermic or an exothermic reaction…

Q: Unit 10 Q#17 When a 25.0 g sample of ethyl alcohol is burned, how much energy is released as heat?…

A: Given: Mass of Ethyl alcohol = 25 g ∆Hrxn = -1.37 × 103 KJ/mol That means on burning 1 mole of…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.38 kg sample…

A: Answer: Heat capacity can be calculated by below shown formula: Q=nC∆TQn∆T=CC=Qn∆There:Q=heat…

Q: piece of metal weighing 45.0 g was heated to 95.0oC, and the hot metal was added to 50.0 g of cold…

A: We know that the heat lost by the metal will be equal with the heat gained by the water.  Thus…

Q: A chemist wastes a delicious brownie by burning it in a bomb calorimeter.  Before burning, the…

A:

Q: A gas expands and does P-V work on the surroundings equal to 284 J. At the same time, it absorbs 201…

A: Given  Work done by the system on surrounding = 284 Joule  Heat absorb                  = 201 Joule…

Q: You mix 125 mL of 0.210 M CsOH with 50.0 mL of 0.525 M HF in a coffee-cup calorimeter, and the…

A: Volume and conc. of CsOH=125ml and 0.21MVol.  and conc. HF =50 ml and. 525MInitial temperature =…

Q: Calculate the mass of water (H,O, CHO = 4.181 J g-l °C-) at 20.0°C that would be requireć to cool a…

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 533.0 mg sample…

A: We know the expression for the molar heat capacity is => q = n×cp×ΔT where, q is the heat, n is…

Q: When O.376 g of sodium metal is added to an excess of hydrochloric acid, 3910 J of heat are…

A:

Q: Consider the hypothetical thermochemical equation 3 A + B → 2 C for which AH = 63.1 kJ/mol. Which…

A:

Q: (b) In one experiment, a 25 g sample of an alloy was heated to a certain temperature. The heated…

A:

Q: The heat capacity of a bomb calorimeter was determined by burning 6.85 g of methane (energy of…

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.81kg sample…

A: