The table lists the specific heat capacities of select substances. Specific heat capacity (J/g °C) 0.128 0.235 0.385 0.449 0.903 4.184 Substance lead silver copper iron aluminum water An unknown substance has a mass of 18.9 g. The temperature of the substance increases by 16.5 °C when 73.3 J of heat is added to the substance. What is the most likely identity of the substance? water lead O copper O iron O silver aluminum

The table lists the specific heat capacities of select substances. Specific heat capacity (J/g °C) 0.128 0.235 0.385 0.449 0.903 4.184 Substance lead silver copper iron aluminum water An unknown substance has a mass of 18.9 g. The temperature of the substance increases by 16.5 °C when 73.3 J of heat is added to the substance. What is the most likely identity of the substance? water lead O copper O iron O silver aluminum

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

When a brass black was dropped into a 124-gram water, the water temperature increased from 21.0°C to 36.8°C. What is the heat capacity of the brass block? The initial temperature of the brass was 314.2°C and the specific heat of water is 4.184J/gk. If the mass of the brass block is 77.764g, what is the specific heat of the brass?
If the same amount of heat is applied to 10 grams of the following four materials, which will reach the highest temperature? water (I), 4.184 J/g•°C aluminum (s), 0.900 J/g•°C copper (s), 0.385 J/g•°C ethanol (I), 2.46 J/g•°C
3. We all know that the hood of a car gets extremely hot in the summertime when a bright sun is shining on it. Suppose that a certain hood weighs 22.8 pounds and is composed of pure iron. If the specific heat of the iron is 0.450 J/g °C, what is the final temperature of the hood if it is heated from 20.0 °C by the addition of 4.0 x 102 kJ of sunlight? (Recall that 1 pound = 0.4536 kg)
It takes 55.0 J to raise the temperature of an 11.0 g piece of unknown metal from 13.0°C to 24.8 °C. What is the specific heat for the metal? Express your answer with the appropriate units.
It takes 47.0 J to raise the temperature of an 9.90 g piece of unknown metal from 13.0°C to 24.6 °C. What is the specific heat for the metal? Express your answer with the appropriate units.
A 2.50 g sample of zinc is heated, then placed in a calorimeter containing 65.0 g of water. Temperature of water increases from 20.00 °C to 22.50 °C. The specific heat of zinc is 0.390 J/g°C. What was the initial temperature of the zinc metal sample? (final temperatures of zinc and water are the same)
The temperature of the cooling water as it leaves the hot engine of an automobile is 240 °F. After it passes through the radiator it has a temperature of 175 °F. Calculate the amount of heat transferred from the engine to the surroundings by 10 grams of water with a specific heat of 4.184 J/g °C.
A 4.81 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee cup calorimeter. Before placing the sample in the water, the temperature of the salt and water is 23.72°C. After the salt has completely dissolved, the temperature of the solution is 28.54°C. If 3.12 × 10³ J of heat was gained by the solution, what is the total heat for the dissolution reaction of the 4.81 g of salt? How many moles of the unknown salt were used in the reaction ? _______ J?
3. A piece of metal with a mass of 97.6 grams was heated in a steam jacket to 94°C and then plunged into 243.6 grams of water at 21 °C, causing the temperature to rise to 24°C. What is the specific heat of metal? 4. How many cubic feet are there in a room measuring 6m x 10m x 3m?
Do not give handwriting solution.
1. A thermometer placed in a solution undergoing a chemical reaction indicates an increase in temperature as the reaction proceeds. Is this reaction endothermic or exothermic? Describe if heat energy is lost or gained from the reaction (the system) to the surroundings. What is the sign of the enthalpy change (AH) of this reaction? 2. A student performs a reaction and determines the enthalpy change (AH) to be 31.4 kJ. Will the temperature of the surrounding solution increase or decrease as a result of this chemical process? 3. If you hold 3 grams of ice in your hand at room temperature, your hand will become cold. a) Is the reaction H,O(s) – H,O(1) endothermic or exothermic? b) In which direction does heat flow?
Determine the most likely identity of the unknown metal sample. Mass of empty beaker = 50.45 g Mass of beaker and water = 81.26 g Mass of water 30.81 g (represents a calculation rather than a direct measurement) Initial water temperature = 25.5 C Mass of metal = 54.02 g Initial metal temperature = 102.5 C Final water and metal mixture temperature = 36.0 C The specific heat capacity of water is 4184 J/kg C