Dethesda Figure 5.21 The combustion of gasoline is very exothermic. (credit: modification of work by “AlexEagle"/Flickr)

Q: Iron has a specific heat capacity of 0.45 J/g C. If a piece of iron at 95 C is added to 175 g of…

A:

Q: All of the heat from the combustion of 30.69 mL of C,H, is transferred to 7.513 L of water at…

A: 2C6H6(l) + 15O2(g) → 12CO2(g) + 6H2O(l) ΔHo = −6535 kJ Given, Volume of C6H6 = 30.69ml  Density of…

Q: A sample of nickel is heated to 99.8C and placed in a coffee-cup calorimeter containing 150.0 g…

A: Heat change in a body is depends on the mass and temperature change of the body. heat change = mass…

Q: A chemical reaction in a bomb calorimeter produces 5.17 kJ of heat. If the heat capacity of the…

A:

Q: A 1.69 gram sample is heated to an initial temperature of 75 oC. The sample is then placed in a…

A:

Q: 7. A 10.0 g sample of a metal is heated to 75.0 °C and then added to 20.0 g of water at 22.7 °C in…

A:

Q: A gas is compressed from an initial volume of 5.55 L to a finalvolume of 1.22 L by an external…

A: The expression for the work done,  W=-P(Vf-Vi)W=-1.00 atm (1.22 L-5.55 L)W=4.33 L (101.33 J)1 L…

Q: A 37.2 g sample of zinc is heated to 124oC. It is then placed in a coffee cup calorimeter containing…

A: Mass of sample of Zinc = MZn = 37.2 g Specific heat of zinc = cZn = 0.387 J/(g oC)  Temperature of…

Q: Under Measurements show that the enthalpy of a mixture of gaseous reactants increases by 206. kJ…

A:

Q: 21) A 4.50-g sample of liquid water at 25.0 °C is heated by the addition of 112 J of energy. The…

A: To solve this problem, we can use the formula: q = mcΔT where q is the heat energy absorbed by the…

Q: The addition of 1.210 g of zinc metal to 0.100 L of 0.1851 M HCl in a coffee cup calorimeter causes…

A: In any particular reaction, enthalpy change that causes at pressure constant condition is considered…

Q: The change in internal energy for a given gas-phase system is –1465 J. The system loses 455 J of…

A: The objective is to determine the final volume of gas. Given Data:Internal energy change, U is −1465…

Q: A sample of methane experiences a temperature change of -92.79 °C while releasing 487.4 joules of…

A:

Q: The specific heat capacity of a pure substance can be found by dividing the heat needed to change…

A: Given - Heat capacity of the substance = 4.78Jg.°C            Mass of the substance = 189 g…

Q: In a calorimetry experiment, a 22.5 gram metal object was heated to 64.23oC. It was placed into a…

A:

Q: 6. A 40.00 g sample of water at 22.00°C is put in a calorimeter. After 60.00 g of water at 65.00°C…

A: (6) Given - Mass of water at 22.00°C = 40.00 g  Mass of water at 65.00°C = 60.00 g  Final…

Q: 12.755 g of a metal initially at 99.0ºC are placed into 75.0 g of water intially at 23.0ºC. The…

A:

Q: Your favorite snack undoubtedly has a nutrition label that indicates the total number of calories…

A:

Q: 2. A sample of lithium goes through a temperature change of +56.36 K while absorbing 17776 joules of…

A: Amount of heat,Q required to increase the temperature of a substance of mass ,m and specific heat…

Q: A 8.50-g sample of aluminum pellets (specific heat capacity=0.89 C-g) and a 22.50-g sample of iron…

A: we have to calculate the final temperature

Q: A 2.62E1 g sample of aluminum at 1.008E2 °C is added to 1.002E2 g of water at 2.22E1 °C in a…

A: For a chemical reaction or physical process to occur a certain amount of energy should be furnished…

Q: . A piece of an iron metal of unknown mass is heated to 325.9 o C and then placed in a styrofoam…

A: Given, Initial temperature of iron = 325.9 °C Volume of water = 225.2 mL Initial temperature of…

Q: A chemist measures the energy change AH during the following reaction: 2 Fe₂O3(s) → 4 FeO(s) + O₂(g)…

A: During a chemical reaction, when heat is released it is called as exothermic reaction and when heat…

Q: In order to determine the heat capacity of their latest phone, CrabappleTM engineers cool the phone…

A: Heat absorbed by phone = heat given by the calorimeter C1× Change in temperature of phone = C2 ×…

Q: A particular natural gas consists, in mole percents, of 83.0% CH4 (methane), 11.2% C₂H6 (ethane),…

A: First of all, Number of moles of gas is calculated using PV = nRT and mole percent  Then, total heat…

Q: Three metal cylinders – one piece of iron, one piece of copper, and one piece ofaluminum – are…

A: Since heat capacity = specific heat capacity X mass  Specific heat capacities of metal are (using…

Q: A chemist measures the energy change AH during the following reaction: 2 Fe₂O3(s) 4 FeO(s)+O₂(g)…

A: Answer:During a chemical reaction, when heat evolves it is called as exothermic reaction and when…

Q: Magnesium oxidizes via the reaction: 2 Mg + O2 → 2 MgO The reaction has a △Hrxn = -1203 kJ. How…

A: 2Mg+O2→2MgO∆Hrxh=-1203 KJNumber of moles of O2=3 moles

Q: All of the heat from the combustion of 39.10 mL of C,H, is transferred to 5.175 L of water at…

A: Given values: Volume of C6H6 is 39.10 mL Volume of water is 5.175 L. Initial temperature is 26.9°C.…

Q: The combustion of how many moles of ethane (C2H6) would be required to heat 559 g of water from…

A: Given information:Mass of water = 559 gInitial temperature = 25.0 ℃Final temperature = 98.0 ℃

Q: 4.Determine the specific heat capacity of titanium if a 43.5 g sample absorbs 0.476 kJ (476J) as its…

A: Mass of titanium=43.5 gram Absorbed energy=0.47 6KJ=476J Temperature change=32°C-53°C