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Thermodynamics
Page 2
Questions (11,562)
The temperature of earth atmosphere drops 5°C for every 1km elevation above the earth surface. If the air temperature at ground
5 answers
asked by
Eurt
8,211 views
The molar heat capacity of C6H6(ℓ) is 136 J/mol ·◦C and of C6H6(g) is 81.6 J/mol · ◦C.
The molar heat of fusion for
4 answers
asked by
bob
2,831 views
Which is the best example of a thermal conductor?(1 point)
Responses plastic ice-cube tray copper plating on bottom of a skillet
5 answers
asked by
HAELP
636 views
A small pebble is heated and placed in a foam cup calorimeter containing 25.0 mL of water at 25.0 degrees Celsius.The water
5 answers
asked by
Anonymous
5,264 views
An orange contains 445 kJ of energy. What mass of water could this same amount of energy raise from 25.0 degrees C to the
5 answers
asked by
Anonymous
3,312 views
A 50.0 g sample of lead starts at 22 degrees Celsius and is heated until it absorbs 8.7 X 10^2 of energy. Find the final
4 answers
asked by
Princess
1,910 views
If the temperature of a 500.0-g sample of liquid water is raised 2.00c how much heat is absorbed by the water?The specific heat
6 answers
asked by
gabriella
5,796 views
A mass 20.0g of petrol was burnt in air. The heat produced was used to heat 2.5 litres of water. Given that the heat value of
5 answers
asked by
mary
1,165 views
Determine the enthalpy of 5.0 kg of water at 850 kpa
5 answers
asked by
Nafa
828 views
When measuring specific heat, why should your final temperature be the maximum temperature reached calorimeter?
4 answers
asked by
miyabi
2,788 views
If a gas in a closed container is pressurized from 12 atm to 25 atm and tis original temperature was 32 degrees C, what would
4 answers
asked by
Anonymous
1,335 views
The heat capacity of a material shows the amount of heat that can be taken in before the Material increases in temperature.
7 answers
asked by
Love
759 views
A gas occupies 210 mL at -73°C. To have the same gas occupy 360 mL:
Should the temperature be increased or decreased? What is
5 answers
asked by
ginger
4,040 views
If delta H°rxn and delta S°rxn are both positive values, what drives the spontaneous reaction and in what direction at
7 answers
asked by
Alexis
11,109 views
five mole of an ideal gas are kept at a constant temperature of 53 degree celcius while the pressure of the gas is increased
5 answers
asked by
bed
4,842 views
Calculate the amount of work done for the conversion of 1.00 mole of Ni to Ni(CO)4 in the reaction below, at 75oC. Assume that
7 answers
asked by
Joshua Chang
5,605 views
How many kilojoules of heat are required to melt a 10.0 g popsicle at 0 degress C? Assume the popsicle has the same molar mass
7 answers
asked by
Anonymous
8,307 views
what is the Ka for ethylammonium cation,C2H5NH3^+, at 25 celsius?(Kb for C2H5NH2=4.7x10^-4 at 25 Celsius)
5 answers
asked by
Bb
5,337 views
A balloonist is preparing to make a trip in a helium-filled balloon. The trip begins in early morning at a temperature of 15
5 answers
asked by
Amber
1,746 views
An engine has an efficiency of 25% and produces 2000J of mechanical work during one cycle. How much energy is transferred out of
5 answers
asked by
Gram
2,378 views
The standard enthalpy of combustion of C2H6O(l) is -1,367 kJ mol-1 at 298 K. What is the standard enthalpy of formation of
4 answers
asked by
abby
4,391 views
Calculate the amount of energy in kilojoules needed to change 225 g of water ice at -10 C to steam at 125 C. The following
5 answers
asked by
Eddie
6,862 views
2 H2S (g) + SO2 (g) <===> ƒnƒn3 S (s) + 2 H2O (g)
1) At 298 K, the standard enthalpy change, H¢X, for the reaction represented
4 answers
asked by
JJ
2,760 views
calculate the final temperature of a 400g of water at 80 degree celsius if it is poured into a 100g pot at 30 degree celsius.
4 answers
asked by
Kaye
2,261 views
1. Calculate the standard enthalpy change for the reaction:
C2H4(g) + H2(g) → C2H6(g) given that the enthalpy of combustion for
4 answers
asked by
John
7,464 views
A gas expands from I to F in the figure.
The energy added to the gas by heat is 468 J when the gas goes from I to F along the
1 answer
asked anonymously
31 views
If 100.0 g of water at 90'C is added to 50.0 g of water at 10'C, estimate the final temperature of the water. explain your
4 answers
asked by
Perrie E.
1,042 views
a 1.0 kg sample of metal with a specific heat of 0.50KJ/kgCis heated to 100.0C and then placed in a 50.0g sample of water at
5 answers
asked by
nate
4,545 views
Some say that the hot air balloons with which the Montgolfier brothers performed their first flight had a volume of 1700 cubic
5 answers
asked by
Nick
4,813 views
Calculate ΔSfus and ΔSvap for HF.
Determine the entropy change when 7.60 mol of HF(l) freezes at atmospheric pressure. I
6 answers
asked by
Srah
20,668 views
How many days does it take for a perfect blackbody cube (0.0100m on a side, 30.0 degree C)to radiate the same amount of energy
5 answers
asked by
Joy
3,287 views
A sample of ethanol, C2H5OH, weighing 2.84 g was burned in an excess of oxygen in a bomb calorimeter. The temperature of the
4 answers
asked by
Lance
4,447 views
A brass measuring tape is correct at 20 degree Celsius. The value obtained when the length of a field is measured with the rule
11 answers
asked by
Samuel
4,883 views
Camphor (C10H16O) has a heat of combustion of 5903.6 kJ/mol. When a sample of camphor with a mass of 0.124 g is burned in a bomb
5 answers
asked by
Nisah
3,095 views
how many grams of solid calcium oxide must react with excess water to liberate the same quantity of heat as does the combustion
4 answers
asked by
maddie
1,499 views
If 3.20 kcal of heat is added to 1.00 kg of ice at 0 degrees C, how much water at 0 degrees C is produced, and how much ice
4 answers
asked by
Anonymous
2,940 views
A concrete sidewalk is constructed between two buildings on a day when the temperature is 25 0C. The sidewalk is 6 m long and
1 answer
asked by
Pam
752 views
At some point in the combustion cycle of an engine, the temperature of a combusted air-fuel mixture is 582 degrees Celsius.
6 answers
asked by
Nick
4,022 views
Energy is added to a piston-cylinder arrangement. The piston is withdrawn in such a way that the temperature remains constant.
5 answers
asked by
chris
5,039 views
The heat of combustion of propane is -2,220.1 kJ/mol
calculate the heat of formation, delta Hf, of propane given that delta Hf of
4 answers
asked by
Anonymous
4,565 views
A gas takes up a volume of 17 liters, has a pressure of 2.3 atm, and a temperature of 299K. If I raise the temperature to 350K
5 answers
asked by
sam
5,678 views
If 25.4 kg of copper at 33°C receives 240 kJ of heat. Calculate the final temperature of the metal.
4 answers
asked by
jay
2,033 views
Under constant-volume conditions the heat of combustion of glucose is 15.57 kJ/g. A 2.500g sample of glucose is burned in a bomb
4 answers
asked by
lily
2,472 views
a balloon with a volume of 1.375 L is released from earths surface at sea level. what will the balloon occuy at an altitude of
7 answers
asked by
amie
1,833 views
In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial temperature of the
5 answers
asked by
Katherine
17,262 views
if some of water in calorimeter splash out when tranfering the metal block, will it affect the experiment result?
5 answers
asked by
jane
4,658 views
you are working in your kitchen preparing lunch for your family. you have decided to make egg salad sandwiches and are boiling
4 answers
asked by
maya
1,361 views
A heat engine operating between 100 degree celcius and 700 degree celcius has an efficiency equal to 40% of the maximum
11 answers
asked by
MZAOEM
2,746 views
The enthalpy of combustion of carbon to carbon dioxide is -394 kJ according to the equation: C (s) + O2 (g) --> CO2 (g) How many
4 answers
asked by
lo
1,803 views
What mass of liquid water a t room temperature (25°C) can be raised to its boiling point with the addition of 40.0 kJ of
6 answers
asked by
Anonymous
5,508 views
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