Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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A 59.7 g piece of metal that had been submerged in boiling water was quickly transferred into 60.0 mL of water initially at 22.0 °C. The final temperature is 28.5 °C. Use these data to determine the specific heat of the metal. Use this result to identify the metal.
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- A metal object with mass of 20.5 g is heated to 97.0 °C and then transferred to an insulated container containing 86.8 g of water at 20.5 °C. The water temperature rises and the temperature of the metal object falls until they both reach the same final temperature of 23.6 °C. What is the specific heat of this metal object? Assume that all the heat lost by the metal object is absorbed by the water.arrow_forwardA 93.82 g bar of iron was heated to 98.4 °C and then dropped into 38.1 mL of water at 15.3 °C. The temperature of the water increased to a maximum of 32.7 °C. Calculate the specific heat capacity of iron. Assume that the density of water is 1.00 g/mL. heat capacity (J/g°C)arrow_forwardThe specific heat of a substance is the amount of heat required to raise the temperature of one gram of the substance by one degree Celsius. The relationship between the amount of heat gained or released by a substance and the change in temperature of the substance is given by the equation ?=??Δ?q=msΔT where ?q is the heat gained or released, ?m is the mass of the substance, ?s is the specific heat of the substance, and Δ?ΔT is the change in temperature. 1. Rearrange the equation to solve for ?. 2. When a substance with a specific heat of 0.635 J/g⋅∘C0.635 J/g⋅∘C is heated from 25.2 ∘C25.2 ∘C to 71.4 ∘C,71.4 ∘C, it absorbs 422 J422 J of heat. Calculate the mass of the substance.arrow_forward
- The temperature of an object increases by 44.1 °C when it absorbs 3761 J of heat. The mass of the object is 355 g. Calculate the heat capacity of the object.arrow_forwardA 28.602 g sample of a metal is heated to 99.9°C in a hot water bath until thermal equilibrium is reached. The sample is quickly transferred to 55.604 g of water at 22.6°C contained in a calorimeter. When thermal equilibrium is reached the temperature of the water is measured to be 27.3°C. What is the specific heat of the metal? Specific heat of water is 4.184 J/ grams•°C In part A, (metal-water ) how was the initial temperature of WATER determined? In part A, (metal-water ) how was the initial temperature of METAL determined?arrow_forwardA chemist dissolved an 10.8-g sample of KOH in 100.0 grams of water in a coffee cup calorimeter. When she did so, the water temperature increased by 23.9°C. Based on this, how much heat energy was required to dissolve the sample of KOH? Assume the specific heat of the solution is 4.184 J/g - °C. %3D =Db Calculate the heat of solution for KOH in kJ/mol. kJ/mol heat of solution =arrow_forward
- Suppose a piece of iron with a mass of 21.5 g at a temp of 100.0 °C is dropped into an insulated container of water. The mass of the water is 132.0 g and its temperature before adding the iron is 20.0 °C. What will be the final temp of the system? Specific heat of iron is 0.449 kJ/kg K.arrow_forwardA sample of copper was heated to 120o C and then plunged into an insulated vessel containing 200.g of water at 25.00o C. The final temperature of the mixture was 26.50o C. Assuming no heat was lost to the surroundings, calculate the mass of the copper sample. The specific heat of copper is 0.385 J/go C and the specific heat of water is 4.184 J/go C.arrow_forwardA 45.90 g sample of pure copper is heated in a test tube to 99.40°C. The copper sample is then transferred to a calorimeter containing 61.04 g of deionized water. The water temperature in the calorimeter rises from 24.51°C to 29.10°C. The specific heat capacity of copper metal and water are J and 4.184 J respectively. g• °C 0.387 g• °C Assuming that heat was transferred from the copper to the water and the calorimeter, determine th heat capacity of the calorimeter. Heat capacity of calorimeter =arrow_forward
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