Homework Answers
- Heat lost by the metal = Heat gained by the water
-Qlost = Qgained
Negative sign indicates the loss of heat
-Qm = Qw
Mm x Cm x dt = Mw x Cw x dt
Mm x Cm x (tf-ti) = Mw x Cw x (tf-ti)
- 23.9 g x Cm x (29.9 - 97.8) = 52.4 g x 1.00 Cal/g C x (29.9-21.9)
23.9 x 67.9 x Cm = 52.4 x 8
Cm = 419.2 Cal/g C/1622.81 = 0.258 Cal/g C
Specific heat of metal = 0.258 Cal/g C
1. Calculate the heat (expressed in calories) required to heat 115 g of water from 15.4^C...
1. Calculate the heat (expressed in calories) required to heat 115 g of water from 15.4^C to 91.4^C 2. Calculate the heat (in calories) lost by 115 g of water as it cools from 91.4^C to 15.4^C 3. Calculate the temperature change caused by absorption of 3.85 kcal heat by 75.4 g water 4. Calculate the final temperature of 75.4 g of water originally at 12.6^C after it absorbs 3.85 kcal of heat 5. A 23.9 g piece of metal...
A piece of metal with a specific heat of 1.29 J/g°C is heated to 126.6°C and...
A piece of metal with a specific heat of 1.29 J/g°C is heated to 126.6°C and then placed in 133.868 g of water which is at a temperature of 10.9 °C. After a minute, the temperature of the water has stopped changing and is now 45.6°C. Assuming that there are no heat losses to the container or surroundings, what is the mass of the piece of metal in grams? Assume that water has a specific heat of 4.184 J/g°C. Enter...
A 95.0g piece of metal (with a specific heat of 1.55 J/g°C) is heated to 375°C...
A 95.0g piece of metal (with a specific heat of 1.55 J/g°C) is
heated to 375°C and then placed into a calorimeter, which contains
60.0g of ice in equilibrium with 40.0g of liquid water. How many
grams of ice will melt in this process? A) 7.3, B) 16.6, C) 34.2,
D) 22.9, or E) 52.4. [The key says the answer is B]. Please show all work. Thank
you!
9. A 95.0 g piece of metal (with a specific heat of...
Following the procedure in lab, a student heated their 36.353 g metal sample to 100.0°C ....
Following the procedure in lab, a student heated their 36.353 g metal sample to 100.0°C . The metal was added to a coffee cup calorimeter containing 20.079 g of water at 21.9 *C . The final temperature of the water was 36 "С . Assuming no heat was absorbed by the calorimeter, calculate the specific heat of the metal. Report your answer in units of
URGENT 4 pts Question 6 A 600 g piece of metal was heated to 100 °C...
URGENT
4 pts Question 6 A 600 g piece of metal was heated to 100 °C and then put it into 100 mL of water initially at 23.7 °C). The metal and water were allowed to come to an equilibrium temperature, determined to be 278°C. Assuming no heat lost to the environment calculate the specific heat of the metal (the specific heat of water is 1.00 cal/g °C). X DE E
Specific Heat Capacity A 21.5-g sample of an unknown metal is heated to 94.0°C and is...
Specific Heat Capacity A 21.5-g sample of an unknown metal is heated to 94.0°C and is placed in a insulated container containing 128 g of water at a temperature of 21.4°C. After the metal cools, the final temperature of the metal and water is 25.0°C. Calculate the specific heat capacity of the metal, assuming that no heat escapes to the surroundings. Heat loss=Heat gained. Specific Heat Capacity of water is 4.18 J/g/K in this temperature range. Submit Answer Incompatible units....
3. A 32.520 g piece of unknown metal was heated in a hot water bath at 99.80°C. The hot metal was then transferred...
3. A 32.520 g piece of unknown metal was heated in a hot water bath at 99.80°C. The hot metal was then transferred to a coffee-cup calorimeter containing 100.0 mL of water. Time-Temperature data was collected and plotted. From the plot, the initial and final tem- peratures for the water were determined to be T 23.76°C and T 26.18°C. and qse (Assume C 21.0 J°C.) a. Calculate cal b. Calculate qnetal Calculate cmetal d. Calculate the molar mass for the...
A 21.3 g sample of a metal was heated to 61.67°C. When the metal was placed...
A 21.3 g sample of a metal was heated to 61.67°C. When the metal was placed into 17.8 g of water in a calorimeter, the temperature of the water increased from 25.00°C to 30.00°C. What is the specific heat of th metal? The specific heat of water is 4.18 J/g. °C). Specific heat- J/g °C) Submit Answer Try Another Version 10 item attempts remaining
2. DANS A piece of unknown metal weighs 100.0 g. It is heated to 98.0°C before...
2. DANS A piece of unknown metal weighs 100.0 g. It is heated to 98.0°C before it was dropped into a calorimeter containing 50.0 g of water at 22.0°C. The final temperature was observed to be 26.4'C. Calculate the specific heat capacity of the metal. Type your answer
A metal object with mass of 20.8 g is heated to 97.0 °C and then transferred to an insulated container containing 8...
A metal object with mass of 20.8 g is heated to 97.0 °C and then transferred to an insulated container containing 86.6 g of water at 20.5 °C. The water temperature rises and the temperature of the metal object falls until they both reach the same final temperature of 23.2 °C. What is the specific heat of this metal object? Assume that all the heat lost by the metal object is absorbed by the water. specific heat: cal
A piece of metal with a specific heat of 1.29 J/g°C is heated to 126.6°C and then placed in 133.868 g of water which is at a temperature of 10.9 °C. After a minute, the temperature of the water has stopped changing and is now 45.6°C. Assuming that there are no heat losses to the container or surroundings, what is the mass of the piece of metal in grams? Assume that water has a specific heat of 4.184 J/g°C. Enter...
A 95.0g piece of metal (with a specific heat of 1.55 J/g°C) is
heated to 375°C and then placed into a calorimeter, which contains
60.0g of ice in equilibrium with 40.0g of liquid water. How many
grams of ice will melt in this process? A) 7.3, B) 16.6, C) 34.2,
D) 22.9, or E) 52.4. [The key says the answer is B]. Please show all work. Thank
you!
9. A 95.0 g piece of metal (with a specific heat of...
Following the procedure in lab, a student heated their 36.353 g metal sample to 100.0°C . The metal was added to a coffee cup calorimeter containing 20.079 g of water at 21.9 *C . The final temperature of the water was 36 "С . Assuming no heat was absorbed by the calorimeter, calculate the specific heat of the metal. Report your answer in units of
URGENT
4 pts Question 6 A 600 g piece of metal was heated to 100 °C and then put it into 100 mL of water initially at 23.7 °C). The metal and water were allowed to come to an equilibrium temperature, determined to be 278°C. Assuming no heat lost to the environment calculate the specific heat of the metal (the specific heat of water is 1.00 cal/g °C). X DE E
Specific Heat Capacity A 21.5-g sample of an unknown metal is heated to 94.0°C and is placed in a insulated container containing 128 g of water at a temperature of 21.4°C. After the metal cools, the final temperature of the metal and water is 25.0°C. Calculate the specific heat capacity of the metal, assuming that no heat escapes to the surroundings. Heat loss=Heat gained. Specific Heat Capacity of water is 4.18 J/g/K in this temperature range. Submit Answer Incompatible units....
3. A 32.520 g piece of unknown metal was heated in a hot water bath at 99.80°C. The hot metal was then transferred to a coffee-cup calorimeter containing 100.0 mL of water. Time-Temperature data was collected and plotted. From the plot, the initial and final tem- peratures for the water were determined to be T 23.76°C and T 26.18°C. and qse (Assume C 21.0 J°C.) a. Calculate cal b. Calculate qnetal Calculate cmetal d. Calculate the molar mass for the...
A 21.3 g sample of a metal was heated to 61.67°C. When the metal was placed into 17.8 g of water in a calorimeter, the temperature of the water increased from 25.00°C to 30.00°C. What is the specific heat of th metal? The specific heat of water is 4.18 J/g. °C). Specific heat- J/g °C) Submit Answer Try Another Version 10 item attempts remaining
2. DANS A piece of unknown metal weighs 100.0 g. It is heated to 98.0°C before it was dropped into a calorimeter containing 50.0 g of water at 22.0°C. The final temperature was observed to be 26.4'C. Calculate the specific heat capacity of the metal. Type your answer
A metal object with mass of 20.8 g is heated to 97.0 °C and then transferred to an insulated container containing 86.6 g of water at 20.5 °C. The water temperature rises and the temperature of the metal object falls until they both reach the same final temperature of 23.2 °C. What is the specific heat of this metal object? Assume that all the heat lost by the metal object is absorbed by the water. specific heat: cal
Most questions answered within 3 hours.
-
1. The catabolic Activation Protein (CAP) is a regulatory
protein associated with several carbohydrate metabolism operons...
asked 12 minutes ago -
A car company was preparing their marketing materials for the
2020 version of their popular SUV....
asked 23 minutes ago -
7.13 LAB: Word frequencies (lists)
Write a program that first reads in the name of an...
asked 26 minutes ago -
how
much is the energy of co2 per mole increased when it absorbs
infrared radiation with...
asked 31 minutes ago -
which reagent CAN convert the glucose ring into a linear
chain?
a) HCl (aq)
b) H2CrO4...
asked 44 minutes ago -
USING MATLAB.
Design a program which uses a for…end loop to add 10 to
a variable...
asked 45 minutes ago -
The raft is made up of
ten 18 cm diameter logs, each with a length of...
asked 48 minutes ago -
Batteries are one of the major imports of the US from China.
Batteries cost 10 Yuan...
asked 1 hour ago -
the
Kb of ammonia (NH3) at 25.0 C is 1.75 x 10-5. Calculate the pH of...
asked 1 hour ago -
aluminum maker Alcoa has a beta of about 1.86, whereas Hormel
Foods has a beta of...
asked 1 hour ago -
Hewtex Electronics manufactures two products, headsets and
electronic calculators, and sells them nationally to wholesalers
and...
asked 1 hour ago -
PHP
Create an HTML Form that asks for a series of
personal information from the user,...
asked 1 hour ago