Fifty (50.0) grams of hot water at 65.0oC is mixed with 40.0 g of cold water. The final temperature of the mixture is 45.0oC. (a) How much heat energy did the hot water lose? (b) How much heat energy did the cold water gain? (c) What was the initial temperature of the cold water?

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: 1.30 kg of an unknown substance was heated up using 7,198 cal energy from 46.8 degree celsius to…

A: Given: Mass of the substance, m=1.30 kg=1.30 x 1000=1300 g Heat provided,q =7,198 cal =7198 x 4.184…

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: Methanol, CH3OH, boils at 65°C. What is the enthalpy change during the process in which 16.0 g of…

A: Mass of liquid methanol    = 16 g specific heat of methanol  = 2.53Jg oC

Q: When 0.395 g of sodium metal is added to an excess of hydrochloric acid, 4110 J of heat are…

A: Given: Weight of sodium metal is 0.395 g Heat produced is 4110 J The given reaction is,…

Q: How much heat will be released (AH) if 0.4391 mol of NHs are mixed with 0.20 mol of O2 in the…

A: Change in enthalpy (∆H) is proportional to the number of moles of reactants and products associated…

Q: 5) When 45.0mL of 1.20M sulfuric acid (H2SO4) are added to 130.0mL of 1.00M sodium hydroxide, the…

A: 5. Given:…

Q: 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s), ΔH = -1652 kJ (c) How much heat is released when 1.21 g iron is…

A: Given -  Heat released in the given reaction = 1652 kJ Mass of iron = 1.21 g

Q: Sucrose (C₁₂H₂₂O₁₁, table sugar) is oxidized in the body by O₂ via a complex set of reactions that…

A: Given: The oxidation of sucrose (C12H22O11) in the body using O2 through a complex set of reactions,…

Q: C (s) + 02 (g) → CO2 (g) AH° = -393.5 kJ Calculate the heat change if 2.54 g of C is reacted.

A: The given reaction is: C(s)+O2(g)→CO2(g)       ∆H°=-393.5 kJ Calculation of no. of mol of C: No. of…

Q: 4Al(s) + 3O2 (g) --> 2 Al2O3 (s) Δ H = -3351 kJ     How much heat will be released when 85 g of Al…

A: Given thermochemical reaction equation is 4Al(s) + 3O2 (g) --> 2 Al2O3 (s) Δ H = -3351 kJ…

Q: (a) A piece of aluminum with mass of 25.0 g is immersed in 25.0 g of water. This system is heated…

A: a. Given: Mass of aluminium = 25.0 g Mass of water = 25.0 g Change in temperature is 27.6 to 41.8 oC…

Q: 6. A 128g piece of Iridium at 95 C is dropped into a 45.2g of water at 17.3 C. The final temp of the…

A:

Q: When methanol, CH, OH, is burned in the presence of oxygen gas, O,, a large amount of heat energy is…

A:

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: Which of the following equations represents a reaction that provides the heat of formation of…

A: The standard enthalpy of formation of a compound is the change in the standard enthalpy when one…

Q: (a) What is the molar heat capacity of liquid water? J/mol °C 75 (b) What is the heat capacity of…

A:

Q: heat for the combustion of sucrose (table sugar, C12H22O11) is -5,647 kJ for

A: Number of moles = mass/ molar mass  Number of moles of O2 = mass of O2/molar mass of O2

Q: ) If a gas absorbs 2.0 J of heat from the surroundings and then performs 15.2 J of work, what is the…

A: • The values provided in the question are:-       i) Quantity of heat absorbed by the gas, Q = 2.0 J…

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…