People often confuse the concepts of "temperature" and "heat" This exercise is designed to illustrate that...

Question

Question

People often confuse the concepts of temperature and heat This exercise is designed to illustrate that it is possible to be adding heaf to a system while its temperature remains constant A beaker contains 50 g of water initially at a temperature of 72.4°C. After 5 min, the temperature has fallen to 55.7°C. How much energy did the water lose? Give the answer in J. 1. What is the magnitude of the average rate of energy loss over the 5 minute interval? (This is power, since it is a rate of change of energy.) 2. At what average rate must energy be added to the water to keep the temperature constant? Explain. 3. 4. If we use a burner or some other device to put energy into the water at the rate specified in 3, is heat being added to the water? changing? Is the temperature

science physics

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

五つ-55.7 -55 3495-3厂 Yes VO

Add a comment

Answer 2

Similar Homework Help Questions

People often confuse the concepts of "temperature" and "heat" This exercise is designed to illustrate that...

People often confuse the concepts of "temperature" and "heat" This exercise is designed to illustrate that it is possible to be adding "heaf" to a system while its temperature remains constant A beaker contains 50 g of water initially at a temperature of 72.4°C. After 5 min, the temperature has fallen to 55.7°C. How much energy did the water lose? Give the answer in J. 1. What is the magnitude of the average rate of energy loss over the 5...
A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat of combustion of fue...

A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. In an experiment, a 0.3320 g sample of naphthalene (C10Hg) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.092x103 g of water. During the combustion the temperature increases from 22.54 to 25.04 °C. The heat capacity of water is 4.184 Jg=1°C-1 The heat capacity of the calorimeter was determined...
Learning Goal: To understand specific heat and heat of transformation and how they are related to...

Learning Goal: To understand specific heat and heat of transformation and how they are related to temperature versus time graphs Energy can be added to a system either by doing work w an it or by adding heat tot Energy transfer by work equires a force to act through some distance Energy ansfer in the form of heat occurs between objects that are different temperatures with onergy spontaneously aveling from the higher temperature object to the lower mperature one. When...

please help me with these annoying multiple choice questions. Thanks Which of the following statements about the reaction shown on the right, in figure 2, is correct? 8. a.) The activation...

please help me with these annoying multiple choice questions. Thanks Which of the following statements about the reaction shown on the right, in figure 2, is correct? 8. a.) The activation energy of the reverse reaction is smaller than that On patential of the forward reaction b.) The reaction is endothermic c.) The second step of the reaction mechanism is the rate determining step d.) This mechanism is composed of two steps Figure 2: Potential energy diagram of a hypothetical...
Exercise 5: I was changing 34 around too much that I just made it a separate...

Exercise 5: I was changing 34 around too much that I just made it a separate exercise. Suppose 310. grams of ethanol (ethyl alcohol) is in an aluminum cup of 90.0 grams. Both of these are at 30.0C. A mass m of ice at - 8.5C is taken from a freezer and added to the alcohol in the cup. The final temperature of all the components is 18.0C. Assuming no heat was lost from the system, calculate the mass m...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has...

e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has its own characteristic atom in which a. the atomic mass is constant. b. the atomic number is constant. c. the mass number is constant. d. Two of the above are correct. e. All of the above are correct. 2. Which of the following is not a trace element in the human body? a. iodine b. zinc c. iron d. calcium e. fluorine 3. A...

summarizr the followung info and write them in your own words and break them into different...

summarizr the followung info and write them in your own words and break them into different key points. 6.5 Metering Chamber: 6.5.1 The minimum size of the metering box is governed by the metering area required to obtain a representative test area for the specimen (see 7.2) and for maintenance of reasonable test accuracy. For example, for specimens incorporating air spaces or stud spaces, the metering area shall span an integral number of spaces (see 5.5). The depth of...
summatize the following info and break them into differeng key points. write them in yojr own...

summatize the following info and break them into differeng key points. write them in yojr own words apartus 6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
Need answers. thank you VOCABULARY BUILDER Misspelled Words Find the words below that are misspelled; circle...

Need answers. thank you VOCABULARY BUILDER Misspelled Words Find the words below that are misspelled; circle them, and then correctly spell them in the spaces provided. Then fill in the blanks below with the correct vocabulary terms from the following list. amino acids digestion clectrolytes nutrients antioxident nutrition basal metabolic rate extracellulare oxydation calories fat-soluble presearvatives catalist glycogen processed foods cellulose homeostasis saturated fats major mineral coenzyeme trace minerals diaretics metabolism water-soluable 1. Artificial flavors, colors, and commonly added to...

10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated...

10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...

People often confuse the concepts of "temperature" and "heat" This exercise is designed to illustrate that...

Homework Answers