5. 5.0 g of copper was heated from 20°C to 80°C. How much energy was used to heat Cu? q= (m) (a)(AT)

Q: A 455-g piece of copper tubing is heated to 89.5°C and placed in an insulated vessel containing…

A: The heat produced by the copper tube will be absorbed by water and the vessel. Let the temperature…

Q: What mass of iron in pounds is needed to absorb 5.4 kJ of energy if its temperature is to increase…

A:

Q: A typical candy bar weighs about 2.00 oz (1.00 oz = 28.4 g).   (a) Assuming that a candy bar is 100%…

A: a) Massof Candy bar=2.00 oz                                  (1.00 oz = 28.4 g)…

Q: A copper kettle weighs 1.09 kg. (The specific heat of copper is 0.384 J/g·°C) (a) What is the heat…

A: Heat capacity of kettle = Specific heat × weight of copper in gm…

Q: When methanol, CH3OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is…

A: Methanol, CH3OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is…

Q: A 46-kg woman cheats on her diet and eats a 685-Calorie (685 kcal) jelly doughnut for breakfast. (a)…

A:

Q: Given that iron has a specific heat capacity of 0.4490 J/g･°C, calculate the amount of heat (J) to…

A: The objective of this question is to calculate the amount of heat required to raise the temperature…

Q: Calculate DE, and determine whether the process is endothermic or exothermic for the following…

A: Given  (a) Absorb heat by the system = 334 KJ       Work done on the system   = 147 KJ       ∆E = ?…

Q: The following thermochemical equation is for the reaction of methane(g) with oxygen(g) to form…

A: CH4 + 2O2 ....> CO2 + 2H2O dH = -802KJ Here negative sign shows that reaction is exothermic. Mass…

Q: (Q3) How much heat (in J) is required to raise the temperature of a block made of pure copper was a…

A: Mass=6.98g   Change in Temperature=6.01°C

Q: What is the specific heat capacity of a metal if it requires 169.6 J of heat to change the…

A:

Q: An engineering student wants to study the heat transfer between a 50 g of a heated block of iron…

A:

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: 3 A backpacker collects snow at 0°C, and places it in a cooking pot on a camp stove. It takes 643 kJ…

A: It is given that: Total amount of heat (Q) = 643 kJ Specific heat capacity of water = 4.18 J/g.K…

Q: (a) Consider the following thermochemical data to: 2CO2(g) → 2 C (s, graphite) + 2 O2 (g) AH° =…

A: The enthalpy change of an reaction is extensive property i.e on changing the stoichiometry of…

Q: [References] Use the References to access important values if needed for this question. The…

A:

Q: The combustion of 0.579 g of benzoic acid in a bomb calorimeter caused a 2.08°C increase in the…

A: no of mol of benzoic acid = w/M = 0.579/122 = 0.004745 mol amount of heat released = 385.2*0.004745…

Q: Calculate the heat needed, in joules, to raise the temperature of 34 g iron, Fe, from 25oC to 78oC.…

A: The amount of heat absorbed (or released) by fixed amount of a substance to change its temperature…

Q: In an experiment to measure the specific heat of material, a student first measured the masses of…

A: Given data : Mass of cup = 2 gms Mass of cup + Mass of water = 60.5 gms Mass of aluminium sample =…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.54 kg sample…

A:

Q: 6.00 J of heat is added to 10.00 g of gold, which is initially at 25°C The heat capacity of gold is…

A:

Q: What is the final temperature of a system if 17.00 g of gold at 90.0°C is placed in 17.00 g of water…

A: In this question, final temperature of the system is to be determined. The given values are : Amount…

Q: Methane burns with oxygen to produce carbon dioxide and water as a gas. The balanced thermochemical…

A:

Q: Fifty (50.0) grams of hot water at 65.0oC is mixed with 40.0 g of cold water. The final temperature…

A: The amount of heat released or absorbed by a system is calculated by using the following expression:…

Q: In an experiment to measure the specific heat of material, a student first measured the masses of…

A: In order to change the temperature of a substance, the heat energy is supplied or heat is removed…

Q: Calculate DE, and determine whether the process is endothermic or exothermic for the following…

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.38 kg sample…

A:

Q: Based on the following heat capacity data, Material Iron Heat Capacity (J/g "C) 0.45 0.88 Cement…

A:

Q: What is the change in internal energy of a system that has 682 J of work done on it and gives off…

A: Given w = + 682 J ( as work is done on the system) q = -485 J ( as heat is given off )

Q: When a chemist burns ammonia according to the reaction below she finds that the reaction releases…

A: First, calculate the moles of ammonia by using its molar mass,

Q: 4 Fe(s) + 3 O2(g)  2 Fe2O3(s)      ΔH = -1652 kJ (a) How much heat is released when 3.38 mol iron…

A: 4Fe+3O2→2Fe2O3∆H=-1652 KJ4 mol iron produced 1652 KJSo ,     3.38 mol iron will produce 16524x3.38…

Q: A 22.0 g piece of metal is heated to 100.0 degrees C and placed in 75.0 g H20 at 25 degrees C. If…

A:

Q: A piece of unknown substance weighs 44.7 g and requires 2110 J to increase its temperature from 23.2…

A: Specific heat: Specific heat can be defined as quantity of heat required to raise the temperature of…

Q: 4) A 154.11 gtsample of concrete, with a specific heat capacity of 0.88 J/(g*•C), initially has a…

A: