2. Calcium carbide, CaC2, is the raw material for the production of acetylene (used in welding torches). Calcium carbide is produced by reacting calcium oxide with carbon. Carbon monoxide is also produced in this reaction. When one mole of calcium carbide is formed, 464.8 kJ is absorbed (a) Write a thermochemical equation for this reaction. (b) Is the reaction exothermic or endothermic?

Q: Suppose that the reaction of 2.172 moles consumes 3.21 kJ of heat. What is the molar enthalpy of the…

A: The answer to the following question is :

Q: A gold ball with a mass of 138 g has been heated to a temperature of 92.4°C and is then dropped into…

A:

Q: 150.0 mL of dilute hydrochloric acid is placed in a coffee cup calorimeter. The initial temperature…

A: Volume of HCl = 150.0 mL Initial temperature = T1 = 14.5 °C Mass of Mg = 0.575 g Molar enthalpy…

Q: Suppose that the reaction of 1.116 moles consumes 30.34 kJ of heat. What is the molar enthalpy of…

A: Enthalpy change  is associated  with change of one substance undergoing  any change is called as…

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: Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions…

A: The balanced reaction taking place is given as, 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s)…

Q: Given the following reactions N2 (g) + O2 (g) → 2NO (g) 2NO(g) + O2(g) → 2N (g) the enthalpy of…

A:

Q: Water gas, a mixture of carbon monoxide and hydrogen, is produced by treating carbon (in the form of…

A: Given :  Mass of carbon = 5.35 kg  Since , 1 kg = 1000 gm  => Mass of carbon = 5350 gm  Also,…

Q: A 42.5 gram piece of chromium is heated to a temperature of 98.70ºC. The metal is then dropped into…

A: Mass of chromium = 42.5 g Mass of water = 36.0 g To find final temperature

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: with 2 mol O2 (g) to produce 1 mol CO2 (g), 2 mol H2O(l), ​and 890 kJ of heat. Write a…

A: when any substance which burns in presence of oxygen that reaction is called as combustion reaction.…

Q: Determine the amount of heat (in kJ) associated with the production of 1.76 × 104 g of NO2 according…

A: Molar mass of nitrogen dioxide is 46 g/mol

Q: If 890 kJ is released during the combustion of 1 mol of methane, what is the heat of reaction if…

A:

Q: What is the final temperature when a 5.0 g sample of brass initially at 25 oC absorbs 75 J of heat?…

A: Equation for finding the heat absorbed by brass is as follows. Q=mc∆TQ=heat absorbed by brassm=mass…

Q: The enthalpy change for the reaction of hydrogen gas with fluorine gas to produce hydrogen fluoride…

A:

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

A:

Q: The reaction between nitrogen and oxygen gases requires the absorption of 43 kJ of energy per mole…

A: The balanced reaction taking place is given as, => N2 (g) + O2 (g) -----> 2 NO (g)…

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: 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: Suppose that the reaction of 0.224 moles consumes 23.58 kJ of heat. What is the molar enthalpy of…

A: Molar enthalpy of the reaction can be defined as the formation of one mole of compound. Consider the…

Q: What is the change in internal energy for a system that performs 213 kJ of work on its surroundings…

A: Given, System performs 213 KJ of work on its surrounding And system loses 79 KJ of heat in the…

Q: 12. An aluminum kettle weighs 1.05 kg.(a) What is the heat capacity of the kettle?(b) How much heat…

A: (a) Given that mass of aluminium kettle =1.05 kg = 1050 g Now, heat capacity is explained as the…

Q: Hydrazine, N2H4, is a liquid used as a rocket fuel. It reacts with oxygen to yield  nitrogen gas and…

A: Molar mass of hydrazine (N2H4) = 32.045 g/mol

Q: The reaction between nitrogen and oxygen gases require the absorption of 43 kJ of energy per mole of…

A:

Q: Exactly 46.33 kJ of heat is transferred to a 1.389 kg slab of nickel at a temperature of 12.7°C. (a)…

A:

Q: 5) A 120.0-g piece of metal at 60.0 °C is placed in 150 g of water at 19.0 °C contained in a…

A: Calculating the heat released or absorbed for the process:            ......(1) In a system, the…

Q: (a) Consider the hypothetical element X. XO reacts with hydrogen gas to form XH;OH. Calculate the…

A: Here we have to find out the enthalpy of the reaction of XO with the hydrogen gas to form XH3OH.  XO…

Q: A sample of 35.41 g of Cus at 96.73 degrees celcius was added to a calorimeter containing 148.3 g of…

A: Given:…

Q: When 0.215 g of sodium metal is added to an excess of hydrochloric acid, 2230 J of heat are…

A: Enthalpy is a thermodynamic property which is equal to the heat content of the system.

Q: 1. When, a volume of 200 cm³ of Lithium hydroxide solution of concentration 1.00 mol/dm3 and 200 cm…

A: a) endothermic reaction:- A chemical reaction in which heat is absorbed during the process.…

Q: A student mixes 67.0 mL of a 2.01 M sodium hydroxide solution with 22.4 mL of 6.45 M hydrochloric g…

A:

Q: If 0.0181 moles reacted, and 372.8 J of heat were absorbed by the reaction in a coffee cup…

A: When 0.0181 mole of the reactant reacts the heat absorbed is = 372.8 J The enthalpy change in kJ/mol…

Q: When a 7.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of…

A:

Q: Consider the following reaction. (a) Is the reaction exothermic or endothermic? exothermic…

A:

Q: Energy and the First Law of Thermodynamics: We have discussed in the previous discussion the…

A: According to First law of Thermodynamics- ∆U = q + wwhere∆U = total change in internal energy of a…

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: 1. 25 g of sodium (Na) is put into 200 mL of water. The reaction between the two produces sodium…

A: Enthalpy change calculated As heat chage(q) of the system.

Q: When 1.42 g of iron reacts with 1.80 g of chlorine, 3.22 g of iron(II) chloride (FeCl2, molar mass =…

A: Iron reacts with chlorine to form iron(II) chloride. When 3.22 g of  is formed, 6.8 kJ of heat is…

Q: The common fertilizer NH,NO;(s), can explosively decompose according to the following reaction. What…

A: Mass of NH4NO3 = 80.06 g

Q: A 4.1-g sample of Colorado oil shale is burned in a bomb calorimeter, which causes the temperature…

A: Mass of the colarado oil = 4.1 g