10. In an experiment to determine the specific heat capacity of a certain metal, a student obtained the values given below; Mass of water Mw = 44.3g Mass of calorimeter, Mc = 58.7g Initial temperature of water before boiling, T₂= 18.4 °C Final temperature reached by the heated water, T₁= 85.4 °C Final temperature reached by the mixture (water+ calorimeter+ specimen metal), TF = 20.2 °C Calculate the specific heat capacity, C₁ of the specimen metal using the equation; C₁= {[(MwCw+ McCc) (TF-T₂)] / M₁(T1-TF)} Where; specific heat capacity of water, Cw=4186J/Kg K - specific heat capacity of the calorimeter, Cc= 386J/Kg K

10. In an experiment to determine the specific heat capacity of a certain metal, a student obtained the values given below; Mass of water Mw = 44.3g Mass of calorimeter, Mc = 58.7g Initial temperature of water before boiling, T₂= 18.4 °C Final temperature reached by the heated water, T₁= 85.4 °C Final temperature reached by the mixture (water+ calorimeter+ specimen metal), TF = 20.2 °C Calculate the specific heat capacity, C₁ of the specimen metal using the equation; C₁= {[(MwCw+ McCc) (TF-T₂)] / M₁(T1-TF)} Where; specific heat capacity of water, Cw=4186J/Kg K - specific heat capacity of the calorimeter, Cc= 386J/Kg K

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter14: Heat And Heat Transfer Methods

Section: Chapter Questions

Problem 27PE: What would be the final temperature of the pan and water in Calculating the Final Temperature When...

See similar textbooks

Similar questions

Calculate the rate of heat conduction out of the human body, assuming that the core internal temperature is 37.0 , the skin temperature is 34.0 , the thickness of the fatty tissues between the core and the skin averages 1.00 cm, and the surface area is 1.40 m2.
For the human body, what is the rate of heat transfer by conduction through the body’s tissue with the following conditions: the tissue thickness is 3.00 cm, the change in temperature is 2.00C, and the skin area is 1.50m2. How does this compare with the average heat transfer rate to the body resulting from an energy intake of about 2400 kcal per day? (No exercise is included.)
One easy way to reduce heating (and cooling) costs is to add extra insulation in the attic of a house. Suppose the house already had 15 cm of fiberglass insulation in the attic and in all the exterior surfaces. If you added an extra 8.0 cm of fiberglass to the attic, then by what percentage would the heating cost of the house drop? Take the single story house to be of dimensions 10 m by 15 m by 3.0 m. Ignore air infiltration and heat loss through windows and doors.
A Styrofoam box has a surface area of 0.80 m and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0C, and the outside temperature is 25C. If it takes 8.0 h for 5.0 kg of ice to melt in the container, determine the thermal conductivity of the Styrofoam.
Suppose a person is covered head to foot by wool clothing with average thickness of 2.00 cm and is transferring energy by conduction through the clothing at the rate of 50.0 W. What is the temperature difference across the clothing, given the surface area is 1.40m2 ?
A high-end gas stove usually has at least one burner rated at 14 000 Btu/h. (a) If you place a 0.25-kg aluminum pot containing 2.0 liters of water at 20.C on this burner, how long will it take to bring the water to a boil, assuming all the heat from the burner goes into the pot? (b) Once boiling begins how much time is required to boil all the water out of the pot?
What would be the final temperature of the pan and water in Calculating the Final Temperature When Heat Is Transferred Between Two Bodies: Pouring Cold Water in a Hat Pan if 0.260 kg of water was placed in the pan and 0.0100 kg of the water evaporated immediately, leaving the remainder to come to a common temperature with the pan?
At what net rate does heat radiate from a 275m2 black roof on a night when the roof’s temperature is 30.0C and the surrounding temperature is 15.0C ? The emissivity of the roof is 0.900.
An electrician is wiring new electrical outlets in a house and has stored a 50.0-m length of copper wire outside where the temperature is 15.0C. When the wire is brought inside and warmed to 23.0C, by what amount in centimeters will the wires length increase due to the temperature change? (See Section 10.3.)
During heavy exercise, the body pumps 2.00 L of blood per minute to the surface, where it is cooled by 2.00C. What is the rate of heat transfer from this forced convection alone, assuming blood has the same specific heat as water and its density is 1050kg/m3 ?
A wooden wall 4.00 cm thick made of pine with thermal conductivity 0.12 W/m K) has an area of 48.0 m2. If the temperature inside is 25C and the temperature out-side is 14C, at what rate is thermal energy transferred through the wall by conduction? (See Section 11.5.)
What are the main methods of heat transfer front the hot core of Earth to its surface? From Earth's surface to outer space? When our bodies get too warm, they respond by sweating and increasing blood circulation to the surface to transfer thermal energy away from the care. What effect will this have on a person in at 40.0C hot tub? Figure 14.30 shows a cutaway drawing of a thermos battle (also known as a Dewar flask), which is a device designed specifically to slow down all terms at heat transfer. Explain the functions of the various parts, such as the vacuum, the silvering of the walls, the thin-walled long glass neck, the rubber support, the air layer, and the stopper. Figure 14.30 The construction of a thermos bottle is designed to inhibit all methods of heat transfer.