A 12.18 g sample of a shiny, orange-brown metal is heated to 65.0oC then added to 25.0 g of water in a coffee-cup calorimeter. The water temperature changes from 25.55oC to 27.25oC. What is the unknown metal?

Q: The combustion of 1 mol of glucose, C6H12O6 liberates 2.82 x 103 kJ of heat. If 1.25 g of glucose is…

A:

Q: One piece of copper jewelry at 105°C has exactly twice the mass of another piece, which is at…

A: Given data:

Q: A metal object with a mass of 19.2 g is heated to 96 °C and then transferred to a calorimeter…

A:

Q: You heat 22.05 g of a solid in a test tube to 100.00oC and add it to 50.00 g of water in a…

A: The specific heat capacity of the solid has to be calculated,

Q: A piece of chromium metal with a mass of 24.41 g is heated in boiling water to 98.3 °C and then…

A: Specific heat- It is the amount of heat required to raise the temperature of 1g of substance by 10…

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

A: Given: mass of CuSO4 = 3.32 g mass of H2O = 113.60 g Temperature change from 23.47 to 26.70 °C heat…

Q: 28.0g of a substance with a molecular weight of 52.0 g/mol is placed in a bomb2 calorimeter with a…

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Q: When a 0.740-g sample of trinitrotoluene (TNT), C7H5N206, is burned in a bomb calorineter, the…

A: In a bomb calorimeter, heat of combustion is calculated as: q=mC∆T where m is mass, C is heat…

Q: A piece of iran, which has a specific heat capacity of 0.452 J-g1. C, with a mass of 54.3218 g is…

A: Specific heat capacity of iron (C) = 0.452 J.g-1 oC-1                          Mass of iron (m) =…

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

A: Since you have posted multiple questions, the answer for first question is given below. Kindly…

Q: 4. A 5.00 gram sample of an unknown metal was placed in a beaker of boiling water (99.58 °C). After…

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Q: When a 0.740-g sample of trinitrotoluene (TNT), CH,N,0, Is burned in a bomb calorimeter, the…

A:

Q: A student wishes to determine the specific heat capacity of a certain material. After she places…

A: We have to calculate the specific heat capacity of material.

Q: A copper rod with a mass of 21.0 g cools from 95.0oC to 45.0oC when placed in a water bath. If the…

A: The following equation relates that the quantities between heat and specific heat capcacity: q=mCΔT…

Q: The combustion of 1.00 mole of glucose, C6H12O6, liberates 1.90 x 103 kJ of heat. If 2.30 g of…

A: Recall the following relation according to law of calorimetry       Q=m×C×∆t given that 1.00 mole of…

Q: When 25 mL of chemical A and 25 mL of chemical B were mixed in a calorimeter the following reaction…

A: The question is based on the concept of chemical thermodynamics. We have  mixed two solutions. we…

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: calculate the enthalpy of dissolution of CsCl(s) in kJ/mol.

A: change in enthalpy as a substance is dissolved in solution is known as a enthalpy of dissolution. it…

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

A: The amount of heat lost or gained by a substance depends in the specific heat capacity of the…

Q: 2. The reaction of hydrochloric acid, HCl and sodium hydroxide, NaOH in water is an exothermic…

A: Given, Volume of HCl & NaOH solution = 50.0 mL Concentration of HCl & NaOH solution = 1.00 M…

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

A: Since the temperature of the solution is increased, heat is released by the dissolution reaction of…

Q: A chemical reaction in a bomb calorimeter evolves 3.15 kJ of heat. If the temperature of the…

A: From given data q = 3.15 kJ = 3150 J  T1= 19.19°C = 292.19 K T2= 22.03°C = 295.03 K  Formula used…

Q: 30.0 g H2O at an unknown temperature is mixed with 27.0 g of water at 15.8°C in a coffee-cup…

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Q: The addition of hydrochloric acid to a silver nitrate solution precipitates silver chloride…

A: A numerical problem based on enthalpy of reaction, which is to be accomplished.

Q: When 0.0801 mol of an unknown hydrocarbon is burned in a bomb calorimeter, the calorimeter increases…

A: The relation between the enthalpy change involved in the combustion reaction and heat capacity of…

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

A: Mass of CaCl2 dissolved = 2.02 gmass of water = 114 g = MInitial temperature of water = 23.70°CFinal…

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

A: Mass of metal = 22.5 g Temperature(T1) = 64.23 °c Mass of water = 30.0 g Temperature = 23.98 °c…

Q: When a 0.740-g sample of trinitrotoluene (TNT), C7H5N2O6, is burned in a bomb calorimeter, the…

A:

Q: A bottle contains 905 grams of chloroform,CHCl3,with a specific heat capacity of 0.96J/(g·ºC). How…

A: Given, Mass of chloroform (m) = 905 g Specific heat capacity of chloroform (Cp) = 0.96 J/g.°C…

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

A: The enthalpy of dissolution at constant pressure is the enthalpy change associated with dissolution…

Q: If the water in a coffee cup calorimeter absorbed 300 J of energy (q = +300 J) during a reaction…

A: Energy absorbed by water in coffee cup calorimeter = 300 J qwater = + 300 J

Q: A 60.86-g stainless steel ball bearing at 115.81°C is placed in a constant-pressure calorimeter…

A:

Q: Consider the thermochemical equation for the combustion of acetone (C3H6O), the main ingredient in…

A: Acetone reacts with oxygen to form carbon dioxide and water. The combustion reaction of acetone is…

Q: A 26.1−g sample of an alloy at 93.00°C is placed into 50.0 g of water at 22.00°C in an insulated…

A: Given: Mass of alloy = 26.1 g. Initial temperature of alloy = 93.00 oC Mass of water = 50.0 g…

Q: If a substance has a specific heat capacity of 1.0 J/g· oC and a density of 2.0 g/mL, how much…

A: We know that the relationship between heat and temperature connected with the mass and specific…

Q: 5.037g piece of iron is heated to 100°c and placed in a coffee cup calorimeter that initially…

A: As we know, Heat(q) = ms.□T where, m = mass of substance   s = specific heat capacity  □T =…

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

A:

Q: In an experiment, 28.0 g of metal was heated to 98.0°C and then quickly transferred to 150.0 g of…

A:

Q: A 33.58 g stainless steel ball bearing at 117.82°C is placed in a constant-pressure calorimeter…

A: We are given that the weight of stainless steel ball-bearing is 33.58g and its temperature is…

Q: periment, a 1.0150 g sample of L-asorbic acid is burned completely in a bomb calorimeter. The…

A: the heat absorbed or released by a substance is guided by the heat capacity.q=mcTf-Tim is mass of…

Q: A 1.800-g sample of phenol (C6H4O2) was burned in a bomb calorimeter whose total heat capacity is…

A: Total heat(q) produced by 1.800 g of phenol can be calculated using following expression…

Q: In a gas expansion, 74 J of heat is absorbed from the surroundings, and the energy of the system…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: A 29.00 g sample of metal alloy is heated to 92.6 °C; then placed in 55.23 g of water in an…

A:

Q: 31.  When a 0.740-g sample of trinitrotoluene (TNT), C7H5N2O6, is burned in a bomb calorimeter, the…

A: Given: Mass of TNT, m = 0.740 g Initial temperature, Tinitial = 23.4oC Final temperature, Tfinal =…

Q: 75.0 mL of 1.80 M CUSO 4 solution is mixed with 150 mL of 1.80 M NAOH solution in a coffee cup…

A: 75.0 mL of 1.80 M CuSO 4 solution is mixed with 150 mL of 1.80 M NaOH solution in a coffee cup…

Q: When 100 mL of 0.200 M NaCl(aq) and 100 mL of 0.200 M AgNO3(aq), both at 21.9 °C, are mixed in a…

A: Given that  Initial temperature = 21.9 °C Final temperature = 23.5 °C To calculate the amount of…

Q: In an experiment, a 0.5021 g sample of heptadecanoic acid (C,H0,) is burned completely in a bomb…

A: Bomb calorimeter: It is a devices which is used for finding Heat content of reaction at fixed volume…

Q: When a 0.740-g sample of trinitrotoluene (TNT), C7H5N2O6, is burned in a bomb calorimeter, the…

A: Given data: Mass of trinitrotoluene, m is 0.740 g Initial temperature, Tinitial  is23.4oC Final…

Q: The air within a piston equipped with a cylinder absorbs 545 J of heat and expands from an initial…

A: The work done against a constant external pressure is given by  W = -Pext∆V  Pext = constant…

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

A: The heat of dissolution of MgCl2=heat absorbed by calorimeter+Heat absorbed by the solution.…