80 cm3 of water takes 12 min to cool from 40?C to 15?C in a draft;...
80 cm3 of water takes 12 min to cool from 40?C to
15?C in a draft; it is contained in a copper calorimeter
of mass 150 g and specific heat 0.1 cal*g-1*K-1
. The same volume of a dilute suspension of ceramic particles in
alcohol, density 0.8 g/cm?3
, takes 8 min to cool from 40?C to 15?C in
the same draft, using the same calorimeter.
(a) Show that in both cases the time it takes to cool from 40?C to 15?C is in proportion to the heat capacity.
(b) Calculate the specific heat of the suspension in SI units.
Homework Answers
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80 cm3 of water takes 12 min to cool from 40?C to
15?C in a draft;...
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Metal Cu Ag Mass (g) 15 15 Specific heat (J/g·°C) 0.385 0.240 Density (g/cm3) 8.96 1.049 Both of these metals are heated with the same amount of heat energy for 10 minutes. Which sample will reach the higher temperature and why? Copper because it is less dense Silver becaue it is more dense Silver because it has a lower specific heat Copper because it has a higher specific heat
12. 10 g of a certain metal absorb 40 cal of heat and the temperature is observed to rise from 20°C to 60°C. The sp...
12. 10 g of a certain metal absorb 40 cal of heat and the temperature is observed to rise from 20°C to 60°C. The specific heat of this metal is_ "C. 021 0.67 17 O 0.42 0.10
When boiling water, a hot plate takes an average of 7 minutes (min) and 16 seconds...
When boiling water, a hot plate takes an average of 7 minutes (min) and 16 seconds [s] to boil 150 milliliters [ml] of water. Assume the temperature in the lab is 78 degrees Fahrenheit (°F). The hot plate is rated to provide 379 watts [W]. If we wish to boil 150 milliliters (ml) of acetone using this same hot plate, how long do we expect the process to take? Acetone has a boiling point of 56 degrees Celsius [°C]. [Hint:...
can someone please help me solve this lab? calorie since it takes 1.00 cal to rai...
can someone please help me solve this lab?
calorie since it takes 1.00 cal to rai at units for the amount of heat may be The specific heat of water is used to define the value of a calorie since it takes 1 the temperature of 1 gram of water 1°C. The measurement units for the amount converted using the conversion factor: 1 calorie = 4.184 Joules. The specific heats of several substances are shown in Table 1. Notice that...
Water is pumped at 15 C at a rate of 380 L/min from point A to...
Water is pumped at 15 C at a rate of 380 L/min from point A to
point B. A 3 inch , steel 40 pipe is used from point A to the pump,
and a 2 inch, steel 40 pipe from the pump to point B.Find the Power
if the efficiency of the pump is 70%.
4.12. Se bombea agua a 15°C a razón de 380 L/min desde un depósito hasta un tanque elevado 5 m sobre el almacenamiento. Se...
5.175 g of water was heated from 15 °C to 88 °C. How many kilocalories were...
5.175 g of water was heated from 15 °C to 88 °C. How many kilocalories were absorbed by the water? Given water has a specific heat of 1.00 cal/g °C. [10 pts.] 6. What are the products formed in an acid-base neutralization reaction? [3 pts.] A) an acid B) a base C) a salt and water D) an acid and water 7. The anhydrous compound that will absorb water from the atmosphere is. [2 pts.] a) hygroscopic b) a hydrate...
Qn:4 QUESTION 3 105? and applied voltage of water from 15°C to 90°C 3.2 If the...
Qn:4
QUESTION 3 105? and applied voltage of water from 15°C to 90°C 3.2 If the water equivalent of the kettle is 150g, find how long it will take to raise a second itre [10) The heater element of an electric kettle has a constant resistance of of 240V. Calculate time taken to raise the temperature of one litre assuming that only 80% of the power input to-the kettle is usefully employed. 3.1 (5) of water through the same temperature...
please identify the unknown and write a derivative Unknown compound 3 Clear liquid Physcial Properties Solubility...
please identify the unknown and write a derivative
Unknown compound 3 Clear liquid Physcial Properties Solubility Dissolve in ethyl ether Not dissolved in water Boiling point 77 IR spectrum Transmitance 3000 1000 2000 Wavenumber cm-1) Classification Positive test in Alkaline Iron (III) Hydroxamate test test CLASSIFICATION TESTS These tests must be done together with known AND FOLLOW PROCEDURE IN YOUR TEXT CARBOXYLIC ACIDS are detected by teating aqueous solutions with limus or pH paper. Also, disolve In NaHCO with bubbles...
For the preparation and standardization of NaOH with KHP im supposed to boil water for 1hr and 30 min to remove CO2
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please find the purpse, Discussion, conclusion un 27 Phoenix June 20 8:10 PM a 35AEXPERIMENT 35A...
please find the purpse, Discussion, conclusion
un 27 Phoenix June 20 8:10 PM a 35AEXPERIMENT 35A Triphenylmethanol PROCEDURE ether MgBr+ C-OH + MgBr(OH) OMgBr 0 Addct Addition of Benzophenone While the phenylmagnesium bromide solution is being heated and stirred under reflux, make a solution of 1.09 g benzophenone in 2 mL of anhrudrous ether in a 5-mL conical vial. Cap the vial until the reflux period is over. Once the Grignard reagent is cooled to room temperature, draw some of...
12. 10 g of a certain metal absorb 40 cal of heat and the temperature is observed to rise from 20°C to 60°C. The specific heat of this metal is_ "C. 021 0.67 17 O 0.42 0.10
When boiling water, a hot plate takes an average of 7 minutes (min) and 16 seconds [s] to boil 150 milliliters [ml] of water. Assume the temperature in the lab is 78 degrees Fahrenheit (°F). The hot plate is rated to provide 379 watts [W]. If we wish to boil 150 milliliters (ml) of acetone using this same hot plate, how long do we expect the process to take? Acetone has a boiling point of 56 degrees Celsius [°C]. [Hint:...
can someone please help me solve this lab?
calorie since it takes 1.00 cal to rai at units for the amount of heat may be The specific heat of water is used to define the value of a calorie since it takes 1 the temperature of 1 gram of water 1°C. The measurement units for the amount converted using the conversion factor: 1 calorie = 4.184 Joules. The specific heats of several substances are shown in Table 1. Notice that...
Water is pumped at 15 C at a rate of 380 L/min from point A to
point B. A 3 inch , steel 40 pipe is used from point A to the pump,
and a 2 inch, steel 40 pipe from the pump to point B.Find the Power
if the efficiency of the pump is 70%.
4.12. Se bombea agua a 15°C a razón de 380 L/min desde un depósito hasta un tanque elevado 5 m sobre el almacenamiento. Se...
5.175 g of water was heated from 15 °C to 88 °C. How many kilocalories were absorbed by the water? Given water has a specific heat of 1.00 cal/g °C. [10 pts.] 6. What are the products formed in an acid-base neutralization reaction? [3 pts.] A) an acid B) a base C) a salt and water D) an acid and water 7. The anhydrous compound that will absorb water from the atmosphere is. [2 pts.] a) hygroscopic b) a hydrate...
Qn:4
QUESTION 3 105? and applied voltage of water from 15°C to 90°C 3.2 If the water equivalent of the kettle is 150g, find how long it will take to raise a second itre [10) The heater element of an electric kettle has a constant resistance of of 240V. Calculate time taken to raise the temperature of one litre assuming that only 80% of the power input to-the kettle is usefully employed. 3.1 (5) of water through the same temperature...
please identify the unknown and write a derivative
Unknown compound 3 Clear liquid Physcial Properties Solubility Dissolve in ethyl ether Not dissolved in water Boiling point 77 IR spectrum Transmitance 3000 1000 2000 Wavenumber cm-1) Classification Positive test in Alkaline Iron (III) Hydroxamate test test CLASSIFICATION TESTS These tests must be done together with known AND FOLLOW PROCEDURE IN YOUR TEXT CARBOXYLIC ACIDS are detected by teating aqueous solutions with limus or pH paper. Also, disolve In NaHCO with bubbles...
please find the purpse, Discussion, conclusion
un 27 Phoenix June 20 8:10 PM a 35AEXPERIMENT 35A Triphenylmethanol PROCEDURE ether MgBr+ C-OH + MgBr(OH) OMgBr 0 Addct Addition of Benzophenone While the phenylmagnesium bromide solution is being heated and stirred under reflux, make a solution of 1.09 g benzophenone in 2 mL of anhrudrous ether in a 5-mL conical vial. Cap the vial until the reflux period is over. Once the Grignard reagent is cooled to room temperature, draw some of...
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