Unit Test: Unit 3. Thermal Physics
The graph represents the heating of 200 g an unknown liquid
with by a 1 kW heater.
a. Determine the boiling point of the liquid? [1]
b. Calculate the amount of heat given to the liquid before it
starts to boil.[3]
c. Calculate the specific heat capacity of the liquid.[2]
d. If the latent heat of vaporization is 8 x 106
Jkg-1 calculate the mass of liquid turned to gas.[2]
2. A 500g metal block at 500°C is placed in 5 liters of room temperature water raising its
temperature by 5°C. Calculate the specific heat capacity of the metal.[2]
The graph represents the heating of 200 g an unknown liquid
with by a 1 kW heater.
a. Determine the boiling point of the liquid? [1]
b. Calculate the amount of heat given to the liquid before it
starts to boil.[3]
c. Calculate the specific heat capacity of the liquid.[2]
d. If the latent heat of vaporization is 8 x 106
Jkg-1 calculate the mass of liquid turned to gas.[2]
2. A 500g metal block at 500°C is placed in 5 liters of room temperature water raising its
temperature by 5°C. Calculate the specific heat capacity of the metal.[2]
6. State Boyle ́s law [2]
7. The graph shows the pressure vs volume for a gas at
1000 K
a. Calculate the number of moles of gas [2]
b. Calculate the pressure if the temperature of 100 cm3 of
gas was raised to 2000 K [2]
c. Sketch the isotherm for the gas at 2000 K [2]
8. The graph shows the variation of V and T for the same gas
at fixed pressure.
a. State the law that this represents. [1]
b. Calculate the pressure [2]
PV = nRT
R = 8.31 Jmol-1K-1
Homework Answers
i tried working on it but I am a little lost. Sorry for the messy work...
i
tried working on it but I am a little lost. Sorry for the messy
work covering the page.
1. Heating causes the internal energy of 1.0 kg of some substance to change from a solid at -174°C to a gas at +158°C, as shown in the graph below. Determine the following: (a) The freezing-melting temperature. 114 (b) The boiling-condensing temperature. 70 (e) The specific heat capacity of the solid. I *2KJ= (1.069) 631-11.4°C-1-174°()) TIC G2 1.2 KJ/g °C As...
Select all accurate statements about the heating curve shown for ethanol (C)H,OH). C2H5OH 46.07 g/mol 161...
Select all accurate statements about the heating curve shown for ethanol (C)H,OH). C2H5OH 46.07 g/mol 161 C AHvap 42.59KJ/mol 78.5 AHfus A 5.021 kJ/mol Boiling Point 78.5°C Heat Added Freezing Point -117.3°C Specific Heat Capacity (c) of liquid 2.42 J/g°C Specific Heat 1.42 J/g°C Capacity (c) of gas Temperature (C) B The portion of the heating curve labeled "A represents the increase in the average kinetic energy of the liquid phase of ethanol. The portion of the heating curve labeled...
7. A cube of ice is taken from the freezer at -4.0 °C and placed in...
7. A cube of ice is taken from the freezer at -4.0 °C and placed in a 70 g aluminum calorimeter filled with 450 g of water at room temperature of 25.0 °C. The System reaches an equilibrium temperature of 20.0°C. Calculate the mass of the ice cube. Given that, Latent heat of fusion of ice Specific heat capacity of water 4186 Jkg-1 °C-1 Specific heat capacity of aluminum 880 Jkg-1K-1 333700 Jkg-1
Question: A kettle holding 1.18 L of water at T, 16.7 C is switched on. The...
Question: A kettle holding 1.18 L of water at T, 16.7 C is switched on. The kettle uses P 1286 W of electricity. The latent heat of vaporization is L 2.26 x 10Jkgwhile the latent heat of fusion is L3.33 x 10 Jkg Part 1) How much energy is required to increase the temperature of the water to 100 C? Q = Part 2) If the kettle is 100% efficient, with all the supplied power going into heating the water,...
Heating Curve for 1 Mole at 1 Atm heating of gas 500 gas 400 heating of...
Heating Curve for 1 Mole at 1 Atm heating of gas 500 gas 400 heating of lig 300 TK 200 solid I evaporation liquid/ 100+ b L Melning Freezing - Valporization 0 + 100 400 500 200 300 Energy added, kJ Use the heating curve in Model 2 to estimate values for the following parameters of the Assume that the molar mass of the substance is 120 g/mol. a. molar heat of fusion b. molar heat of vaporization c. specific...
1. Definitions. Fill in the blank with the LETTER of the most appropriate term from the...
1. Definitions. Fill in the blank with the LETTER of the most appropriate term from the following: A. Charles' Law B. neutralization C. heat of fusion D. Dalton's Law E. heat of vaporization F. heat capacity (specific heat) G. evaporation H. condensation I. melting J. Boyle's Law K. ideal gas law L. pressure M.PH N. Arrhenius acid S. Arrhenius base T. kinetic molecular theory states that pressure and volume are inversely proportional states that volume and absolute temperature are directly...
Physics Intro Heat/Thermodynamics Test (14 marks, 20 minutes) You must complete or attempt all questions. 1....
Physics Intro Heat/Thermodynamics Test (14 marks, 20 minutes) You must complete or attempt all questions. 1. 25 cm3 of hydrogen (H-1) gas at a temperature of 20 C exerts a pressure of 1.7 MPa on the walls of a container. a. How many moles of H-1 are in the container? (2 marks) b. How many atoms of H-1 are in the container? (2 marks) c. What is the average velocity of an H-1 atom in the container? (2 marks) 2....
3. 8 kg water in a dishwasher with a 6 kW resistance heater is to be...
3. 8 kg water in a dishwasher with a 6 kW resistance heater is to be heated up from 15°C to 65°C. 130 kJ of heat is lost to the surroundings during the heating. The specific heat capacity of water is 4.1813 kJ/kg.K. The atmosphere pressure is 100kPa, no boiling has taken place. Determine the required heating time.
8. Use the data in the Introduction calculate the total amount of heat in kcal required...
8. Use the data in the Introduction calculate the total amount of heat in kcal required to turn 100 g of ice at -20°C to steam at 120°C? liq gas equilibrium (heat goes into phase change) Steam - Water and steam allas (heat goes into temperature change) Temperature (°C) all liquid (heat goes into temperature change) -Water Ice and water all solid Nice solid/liq equilibrium (heat goes into phase change) - Time Heat On the 5 sections of the graph...
3. a) An electric water heater uses 5500 W (240 V) of electrical power. It has...
3. a) An electric water heater uses 5500 W (240 V) of electrical power. It has a capacity of 40 gallons (150 liters or 150 kg). If the initial temperature of the water in the water heater is 20° C, how long will it take to heat the water to a final temperature of 60° C at 100% efficiency? b) How long will it take to heat the water to a final temperature of 60°C at 80% efficiency? c)If electrical...
i
tried working on it but I am a little lost. Sorry for the messy
work covering the page.
1. Heating causes the internal energy of 1.0 kg of some substance to change from a solid at -174°C to a gas at +158°C, as shown in the graph below. Determine the following: (a) The freezing-melting temperature. 114 (b) The boiling-condensing temperature. 70 (e) The specific heat capacity of the solid. I *2KJ= (1.069) 631-11.4°C-1-174°()) TIC G2 1.2 KJ/g °C As...
Select all accurate statements about the heating curve shown for ethanol (C)H,OH). C2H5OH 46.07 g/mol 161 C AHvap 42.59KJ/mol 78.5 AHfus A 5.021 kJ/mol Boiling Point 78.5°C Heat Added Freezing Point -117.3°C Specific Heat Capacity (c) of liquid 2.42 J/g°C Specific Heat 1.42 J/g°C Capacity (c) of gas Temperature (C) B The portion of the heating curve labeled "A represents the increase in the average kinetic energy of the liquid phase of ethanol. The portion of the heating curve labeled...
7. A cube of ice is taken from the freezer at -4.0 °C and placed in a 70 g aluminum calorimeter filled with 450 g of water at room temperature of 25.0 °C. The System reaches an equilibrium temperature of 20.0°C. Calculate the mass of the ice cube. Given that, Latent heat of fusion of ice Specific heat capacity of water 4186 Jkg-1 °C-1 Specific heat capacity of aluminum 880 Jkg-1K-1 333700 Jkg-1
Question: A kettle holding 1.18 L of water at T, 16.7 C is switched on. The kettle uses P 1286 W of electricity. The latent heat of vaporization is L 2.26 x 10Jkgwhile the latent heat of fusion is L3.33 x 10 Jkg Part 1) How much energy is required to increase the temperature of the water to 100 C? Q = Part 2) If the kettle is 100% efficient, with all the supplied power going into heating the water,...
Heating Curve for 1 Mole at 1 Atm heating of gas 500 gas 400 heating of lig 300 TK 200 solid I evaporation liquid/ 100+ b L Melning Freezing - Valporization 0 + 100 400 500 200 300 Energy added, kJ Use the heating curve in Model 2 to estimate values for the following parameters of the Assume that the molar mass of the substance is 120 g/mol. a. molar heat of fusion b. molar heat of vaporization c. specific...
1. Definitions. Fill in the blank with the LETTER of the most appropriate term from the following: A. Charles' Law B. neutralization C. heat of fusion D. Dalton's Law E. heat of vaporization F. heat capacity (specific heat) G. evaporation H. condensation I. melting J. Boyle's Law K. ideal gas law L. pressure M.PH N. Arrhenius acid S. Arrhenius base T. kinetic molecular theory states that pressure and volume are inversely proportional states that volume and absolute temperature are directly...
Physics Intro Heat/Thermodynamics Test (14 marks, 20 minutes) You must complete or attempt all questions. 1. 25 cm3 of hydrogen (H-1) gas at a temperature of 20 C exerts a pressure of 1.7 MPa on the walls of a container. a. How many moles of H-1 are in the container? (2 marks) b. How many atoms of H-1 are in the container? (2 marks) c. What is the average velocity of an H-1 atom in the container? (2 marks) 2....
3. 8 kg water in a dishwasher with a 6 kW resistance heater is to be heated up from 15°C to 65°C. 130 kJ of heat is lost to the surroundings during the heating. The specific heat capacity of water is 4.1813 kJ/kg.K. The atmosphere pressure is 100kPa, no boiling has taken place. Determine the required heating time.
8. Use the data in the Introduction calculate the total amount of heat in kcal required to turn 100 g of ice at -20°C to steam at 120°C? liq gas equilibrium (heat goes into phase change) Steam - Water and steam allas (heat goes into temperature change) Temperature (°C) all liquid (heat goes into temperature change) -Water Ice and water all solid Nice solid/liq equilibrium (heat goes into phase change) - Time Heat On the 5 sections of the graph...
3. a) An electric water heater uses 5500 W (240 V) of electrical power. It has a capacity of 40 gallons (150 liters or 150 kg). If the initial temperature of the water in the water heater is 20° C, how long will it take to heat the water to a final temperature of 60° C at 100% efficiency? b) How long will it take to heat the water to a final temperature of 60°C at 80% efficiency? c)If electrical...
Most questions answered within 3 hours.
-
Accent Software faces the following conditions. All of these
support Accent’s use of a market-penetration pricing...
asked 37 minutes ago -
A mathematically inclined friend emails you the following
instructions: "Meet me in the cafeteria the first...
asked 39 minutes ago -
A monopoly sells in two countries . The demand curves in the two
countries are p1...
asked 1 hour ago -
A .15kg rubber ball is bounced off a wall. Before hitting the
wall, the ball moves...
asked 2 hours ago -
A manufacturing company preparing to build a new plant is
considering three potential locations for it....
asked 2 hours ago -
B. If compound Y has approximately the same values of solubility
in toluene as compound X,...
asked 3 hours ago -
Oscar Inc. has inventory in Japan valued at 39,051,000 Yen one
year ago. One year ago...
asked 3 hours ago -
If Canada suffered from "fundamental disequilibrium," and its
government choose not to devalue its currency, a...
asked 3 hours ago -
4. How many input & output Key Value Pairs are passed into,
and emitted out of...
asked 3 hours ago -
Why would your heart not function well if constructed of
skeletal muscle? What is the particular...
asked 3 hours ago -
Please respond to this essay question in full essay form for
Chemistry 1102 Organic and Biochemistry:...
asked 3 hours ago -
Determine the head loss and velocity of flow in a water supply main
of 15.0 cm...
asked 3 hours ago