150. g of water (Cs = 4.184 J/g°C) at 20.0 °C is added to a coffee cup calorimeter. A 35.0 g sample of silver (Cs = 0.129 J/g°C) is then placed into the water.  At thermal equilibrium, the temperature of the calorimeter is 22.07 °C.  What was the initial temperature of the silver sample?

Q: When 10.0 g KOH is dissolved in 100.0 g of water in a coffee-cup calorimeter, the temperature rises…

A: Coffee-Cup calorimeter is a device which is used to measure the enthalpy of chemical process at…

Q: A sample of metal weighing 9.323 g was heated to 99.15 °C. It was then placed in a calorimeter…

A: Given data, The mass of water = 35.5 g The mass of metal = 9.323 g The initial temperature of  H2O =…

Q: An iron bar of mass 869 g cools from 94°C to 5°C. Calculate the heat released (in kilojoules) by the…

A: Q = m . s . ∆T

Q: The specific heat of copper metal is 0.385 J·g -1·C -1 how many J of heat are necessary to raise the…

A:

Q: A 10 g piece of copper at 145 oC is placed in 150 mL of water. The initial temperature of water is…

A:

Q: A piece of silver with a mass 418 g has a heat capacity of 99.1 J/°C. What is the specific heat of…

A: Given, heat capcity 'c' of silver = 90.1 J/oC , mass of silver = 418 g, specific heat = ?

Q: A 55.0 g piece of metal is heated in boiling water to 99.8 0 C and then dropped into cool water in…

A:

Q: Calculation of Calories per Mass of Food   Quantity Mass of can (g) 12.623 mass of can and water (g)…

A:

Q: A 75.0 gram sample of a metal is heated until it is at 100.0℃. A calorimeter contains 100.0 grams of…

A: Given that : Mass of sample of the metal (ms)= 75.0 g Its temperature = 100°C Mass of water in the…

Q: A piece of gold (specific heat of 0.129 J/g oC) at 190 oC is placed in 165 mL of water. The initial…

A: The heat lost by the piece of gold is absorbed by water. The amount of heat absorbed by water can be…

Q: A coffee cup calorimeter contains water at an initial temperature of 20°C and is calculated to have…

A: A coffee cup calorimeter contains water at initial temperature of 20°C and  Given data is: Initial…

Q: A 43.5-g sample of copper at 99.9 °C is dropped into a beaker containing 156 g of water at 18.7 °C.…

A: Given: Mass of copper = 43.5g Mass of water = 156g Initial temperature of copper = 99.9°C = 99.9 +…

Q: A metal object with mass of 29.0 g is heated to 97.0 °C and then transferred to an insulated…

A: Since the heat lost by metal + heat gain by water should be = 0 as no heat is lost in surroundings…

Q: Substance Specific Heat Capacity (in J/g x °C) Iron 0.449 Aluminum 0.897 Lead 0.129 4. Using the…

A: Given : Initial temperature of substance = 20 oC Final temperature of substance = 30 oC And equal…

Q: Magnesium metal reacts with HCl according to the following balanced equation: Mg(s)  +      2 HCl…

A:

Q: A 47.0-g sample of copper at 99.8 °C is dropped into a beaker containing 147 g of water at 18.6 °C.…

A: Given: Mass of copper sample                       = 47.0 g Initial temperature of copper sample =…

Q: 8. (Calorimetry - Determination of specific heat) A 5.1-gram piece of gold jewelry is removed from…

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: The enthalpy of combustion of methane gas is -890 kJ/mole. Write a balanced thermochemical equation…

A: Given, ∆H = -890 KJ/mol Mass of CH4 = 48 g

Q: A 625 g chunk of iron is removed from an oven and plunged into 525 g of water in an insulated…

A: The heat lost by iron = heat gained by water heat gained by water (q) = m x S x ΔT…

Q: The energy content of raisin bread is 13.1 kJ/g. Calculate the temperature increase when a slice of…

A: Given data:

Q: A chunk of metal having a mass of 49.7g was warmed to 95.5°C and then dropped into a calorimeter…

A: Mass of metal = 49.7g  Mass of water = 45.3g Heat capacity for water = 4.18J/g°C Final temperature =…

Q: Quantity Mass of can (g) 12.695 mass of can and water (g) 125.129 Initial mass of food sample (g)…

A:

Q: When carbon disulfide,CS2, forms from its elements, heat is absorbed. How much heat would be…

A: Applying concept of mole relationship with heat of reaction.

Q: What is the specific heat capacity of a piece of wood if 3500. g of the wood absorbs 47,550. joules…

A: From the formula of specific heat capacity we have solved this problem.

Q: A piece of metal weighing 57.3 g is heated to a temperature of 88.0°C and is then immersed in 155 g…

A: Since, heat energy = m.s.∆T        where m = mass                 s   = specific heat capacity…

Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

A:

Q: 1. In an experiment to determine the Specific Heat of Nickel, a 66.0 g sample of Nickel metal is…

A: Answer :-  The specific heat of Nickel determined by the experiment = 0.544 J/g.°C…

Q: What is the enthalpy change in kJ of a chemical reaction that raises the temperature of 250.0 mL of…

A: We have to calculate the enthalpy change

Q: A 500-mL bottle of water and a 2-L bottle of water were both at room temperature. Then they were…

A: Heat gained or lost,  Q = mCPΔTFrom the above equation it is clear that the heat lost or gained…

Q: When immersed in water, the temperature of a 102.1 gram sample of metal changes from 150.2 0C to…

A:

Q: You add some of the white crystals to a small test tube filled with water. The water in the test…

A: This can be calculated by specifi heat formula, CP = (dH/dT)P dH = Enthalpy change  dT = Temperature…

Q: A 100.0 g sample of an unknown metal is heated to 95.00°C. This hot metal is then placed into a foam…

A:

Q: A calorimeter was filled with 50 g of water with an initial temperature of 10 °C then hot water…

A: Heat capacity of water = 4.184 J/(g. °C) Mass of cold water at 10 °C = 50 g Mass of hot water at 99…

Q: When you mix two substances, the heat gained by one substance is equal to the heat lost by the other…

A: According to the specific heat equation : q = m. C. ∆ T Where  q = heat absorbed or released m =…

Q: A calorimeter holds 55 g water at 21.0°C. A sample of hot iron is added to the water. The final…

A: Given, Mass of water, m = 55g Temperature, T1 = 21.0oC Temperature, T2 = 24.0oC. Specific heat of…

Q: A student measures the following data regarding the heat of fusion of ice: 24.8 g ice at 0.0°C is…

A: Given: Heat capacity of calorimeter = 15.4 J/oC Initial temperature of calorimeter and water = 21.5…

Q: When 10.0 g KOH is dissolved in 100.0 g of water in a coffee-cup calorimeter, the temperature rises…

A:

Q: Calculate the specific heat capacity of a piece of wood if 1500.0 g of the wood absorbs 67,500…

A: Interpretation: The specific heat capacity of a piece of wood if 1500.0 g of the wood absorbs…

Q: When 10.99 g KOH is dissolved in 101.9 g of water in a coffee-cup calorimeter, the temperature rises…

A: When definite amount of substance in any reaction transforms into products, release or absorption of…

Q: Explain the difference between heat capacity and specific heat of a substance. Heat capacity refers…

A:

Q: Nitrogen monoxide, a gas recently found to be involved in a wide range of biological processes,…

A: Exothermic reaction: When heat is evolved by the system i.e. the value of ∆H°rxn is negative.…

Q: A sheet of gold weighing 10 g and at a temperature of 18.0°C is placed flat on a sheet of iron…

A:

Q: 22.214 g of a metal at 99.73°C was added to 14.2 g of water at 19.05°C. The temperature of the…

A: Given: Mass of metal = 22.214 g Initial temperature of metal = 99.73 °C  Mass of water = 14.2 g…

Q: A student heats a 5.0 g sample of an unknown metal to a temperature of 211 °C, and then drops the…

A: Given, Mass of sample metal = 5.0 g Mass of water in calorimeter = 66.0 g The initial temperature of…

Q: A 50.0-g sample of water at 100.00°C was placed in an insulated cup. Then 25.3-g of zinc at 25.00°C…

A: We are given sample of water mw=50.0 gm initial temperatureTwi=100°C final temperature of…

Q: If 4.168 kJ of heat is added to a calorimeter containing 75.40 g of water, the temperature of the…

A:

Q: 18. Two different metals, lead and copper, are heated to 100°C and each is immersed into a separate…

A: The principle behind the calorimeter is the heat released by the metal is received by the water. The…

Q: Two substances, lead and granite, initially at different temperatures, come into contact and reach…

A: Here, we shall answer only the first question which allows us to calculate the final temperature of…

Q: A group of students place 15.41g of a metal into a test tube. They place the test tube into a beaker…

A: Given, mass of the metal = Wmetal = 15.41 g  Mass of the water = Wwater = 10.47 g Initial…