4) The specific heat of copper is 0.385 J/g °C. Using the heat equation, Heat = mass x temperature change x specific heat calculate the mass of copper that absorbs 1.46 x 10 Joules to undergo a temperature change from 22 °C to 325 °C. Show your work.

4) The specific heat of copper is 0.385 J/g °C. Using the heat equation, Heat = mass x temperature change x specific heat calculate the mass of copper that absorbs 1.46 x 10 Joules to undergo a temperature change from 22 °C to 325 °C. Show your work.

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

Calculate the amount of heat liberated (in KJ) from 366 g of mercury when it cools from 77.0 °C to 12.0°C. The specific heat of mercury is 0.139 J/g•°C.
Rachel West Section 017 A thermometer placed in a solution undergoing a chemical reaction indicates an increase in temperature as ie reaction proceeds. Is this reaction endorhermic or exothermic? Describe if heat energy is lost or gained Trom the reaction (the system) to the surroundings. What is the sign of the enthalpy change (AH) of this reaction? A student performs a reaction and determines the enthalpy change (AH) to be 31.4 kJ. Will the cemperature of the surrounding solution increase or decrease as a result of this chemical process?
You take 126 g of a solid (melting point = 48.5 °C, heat of fusion = 514 J/g) and let it melt in 555 g of water. The water temperature decreases from its initial temperature to 52.3 °C. Ignoring the specific heat of the solid, calculate the initial temperature of the water.
They are all one question. In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction.A student heats 60.42 grams of chromium to 98.12 °C and then drops it into a cup containing 82.86 grams of water at 23.37 °C. She measures the final temperature to be 28.57 °C.The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.80 J/°C.Assuming that no heat is lost to the surroundings calculate the specific heat of chromium.Specific Heat (Cr) = ______J/g°C. In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction.Since the cup itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is…
A 21 gram piece of metal at 125 oC is dropped into 87 grams of water at 17 oC. The water temperature rose to 38 oC. Calculate the heat change of the metal in Joules. (DO NOT PUT UNITS IN YOUR ANSWER.) Assume that all of the heat lost by the metal is transferred to the water and no heat is lost to the surroundings. The specific heat of water is 4.184 J/g oC.
If 30.5 g of LiBr are dissolved 350.0 g of water at 20.0 °C in an insulated container, a temperature change is observed. The Δ H of solution of LiBr is -48.8 kJ/mol. Assuming that the specific heat of the solution is 4.184 J/(g C) and that no heat is gained or lost by the container, what will be the final temperature of the solution?
6) A block of rhenium metal (specific heat =0.0329 cal/ gC) is heated to 88.2C and then dropped into 100.0 g of water initially at 26.4 C. The final temperature of the mixture is 32.4C. What was the mass of the block of rhenium?
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?
A chemist carefully measures the amount of heat needed to raise the temperature of a 0.46 kg sample of a pure substance from 36.2 °C to 51.6 °C. The experiment shows that 33. kJ of heat are needed. What can the chemist report for the specific heat capacity of the substance? Round your answer to 2 significant digits.
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?