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Thermodynamics
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Questions (11,562)
i.imgur. com/VWFwb. png
3 answers
asked by
Matthew
727 views
Question: 0.19 litre of an ideal monatomic gas (Cv,m = 3R/2) initially at 83 °C and 47 atm pressure undergo an expansion
2 answers
asked by
Ashley
711 views
Liquid water boils at 100 degrees C. In other words, this is the temperature at which the thermal energy between two molecules
2 answers
asked by
Ana
917 views
Determine if each statement is true or false.
Removing thermal energy decreases kinetic energy. The amount of thermal energy in a
1 answer
asked by
LostCoward
36 views
Which of the following statements is correct?
A) The internal energy of a system increases when more work is done by the system
12 answers
asked by
Ana
6,386 views
Water enters the heater at 25⁰C and leaves at 80⁰C. What is the temperature change in ⁰Fahrenheit, ⁰Kelvin, and
5 answers
asked by
Coke15
2,816 views
A cylinder in a car engine takes Vi = 4.50 10-2 m3 of air into the chamber at 30° C and at atmospheric pressure. The piston
4 answers
asked by
opp
1,792 views
If 100.0mL water of at 50.0C is added to 100.0 mL of water at 20.0C. What temperature would
the mixture of water reach? Assume
4 answers
asked by
beti
2,275 views
The air in a dry, sealed 2L soda bottle has a pressure of 0.998 atm at sea level at a temperature of 34C. what will be it's
5 answers
asked by
Courtney
2,948 views
Aluminum has specific heat capacity of 900J/kg what does this mean
5 answers
asked by
Anonymous
2,826 views
Using the thermodynamic data provided below, calculate the standard change in entropy when one mole of sodium nitrate is
4 answers
asked by
Nicole
2,519 views
If a copper calorimeter of 100g mass containing 200g of water was used. The thermometer contained 0.8 centimeter cube of mercury
8 answers
asked by
Mikee
2,705 views
At 6 p.m., the temperature was -2°F. By midnight, the temperature had dropped 5 degrees. what was the temperature at midnight?
4 answers
asked by
korblox
1,033 views
The standard enthalpy change of the reaction:
C2H4(g)+H2O(g)=C2H5OH(l) can be calculated from standard enthalpy changes of
4 answers
asked by
Anonymous
1,121 views
Calculate the energy absorbed when 8.5g of ice is melted at 0 Celsius.
thank you
4 answers
asked by
happy
2,496 views
the molar heat of vaporization for water is 40.79 kJ/mol. How would you express this heat of vaporization in joules per gram.
5 answers
asked by
Sienna
3,026 views
At what temperature will the root-mean-square speed of oxygen molecules have the value of 640 m/s? 1 kilomole of oxygen has a
4 answers
asked by
christ
907 views
2C2H2(g) + 5O2(g)→4CO2(g) + 2H2O(g)
a. Determine the enthalpy change for the reaction. ΔH = (4(-393.5)+ 2(-241.8)) – (2(227)
6 answers
asked by
Morgan
22,281 views
Melting Snowball: A spherical snowball melts at a rate proportional to its surface area. Show that the rate of change of the
5 answers
asked by
Eli
4,707 views
The standard internal energy change for a reaction can be symbolized as ΔU°rxn or ΔE°rxn.
For the following reaction
6 answers
asked by
jake
9,852 views
Which of the following substances have a standard heat of formation (ÄHf°) of zero?
O2(g) at 25.0 degree C and 1 atm Fe at 1200
5 answers
asked by
Anonymous
23,570 views
five hundred kcal of heat is added to 2-kg of water at 80 degree Celsius. how much steam is produced?
5 answers
asked by
xam
6,093 views
A 0.500 g sample of TNT (C7H5N2O6) is burned in a bomb calorimeter containing 610 grams of water at an initial
temperature of
5 answers
asked by
Anonymous
3,636 views
If 3 moles of a compound use 12 J of energy in a reaction, what is the Hreaction in kJ/mol?
A. -4 kJ/mol B. -0.004 kJ/mol C.
9 answers
asked by
princess
8,137 views
How many grams of Butane (C4H10) must be burned to release 6375 KJ of heat?
Given: Molar mass of C4H10 =
4 answers
asked by
Kell
2,916 views
An object is moved from the outdoors, which is at a temperature of 100 ºF, to a room at a temperature of 70 º F. What happens
5 answers
asked by
anon
4,239 views
A 3.00 gram lead bullet travels at a speed of 240 m/s and hits a wooden post. If half the heat energy generated remain with the
4 answers
asked by
Nina
3,419 views
1. A 0.400 kg sample of aluminum (c = 9.20 x 102 J/kg°C) at 95.0 °C is dropped into a 0.550 kg pot of water which is at 18.0
5 answers
asked by
anonymous
2,675 views
Calculate the heat given off when 177 g of copper cools from 155.0 c to 22.0 c. The specific heat capacity of copper is 0.385
5 answers
asked by
Andrew
5,802 views
A coffee cup calorimeter contains 100.0 g of
water at 10.0 ◦C. A 72.4 g sample of iron is heated to 100 ◦C and dropped into
6 answers
asked by
kika
4,829 views
Determine the specific heat of iron if 6.1 J of energy are needed to warm 1.50 g of iron from 20 degrees C to 29 degrees C
5 answers
asked by
Anonymous
2,204 views
Find the ΔHr0 for the reaction:
Na2CO3(s) +2HNO3(aq) → 2NaNO3(s) +CO2(g) +H2O(l) ΔHr0=+125.7kJ ΔHr0=-67.2kJ ΔHr0=-45.3kJ
5 answers
asked by
Anna
2,279 views
A gas at 65 degrees Celsius occupies 4.22L. At what Celsius temperature will the volume 3.87L, assuming the same pressure?
-kay
7 answers
asked by
kLb
9,301 views
Lake Erie contains roughly 4.00 1011 m3 of water.
(a) How much energy is required to raise the temperature of that volume of
4 answers
asked by
PLEASE HELP(DUE SOON)
4,174 views
A metal bar of mass 100g is warmed from 20°c to 80°c. How much heat is absorbed by the metal bar if the specific heat capacity
7 answers
asked by
Anonymous
1,706 views
The standard heat of formation of solid ammonium nitrate. NH4NO3 is -330kJ/mol. The equation that represents this process is:
a)
5 answers
asked by
Bobby
3,091 views
Use an enthalpy diagram to calculate the lattice energy of CaCl2 from the following information. Energy needed to vaporize one
5 answers
asked by
Luke
6,789 views
Calculate the calorimeter constant if 25g of water at 50C was added to 25g of water at 25C with a resulting temperature of 35C?
T
4 answers
asked by
Lance
1,418 views
calculate the heat of combustion for the following reactions from the standard enthalpies of formation
2H2(g) + O2(g) = 2H2O(l)
4 answers
asked by
TROUBLED
2,279 views
A weather ballon is designed to expand to a maximum radius of 20 m at its working altitude, where the air pressure is 0.030 atm
5 answers
asked by
Y0gi
3,216 views
Using the following data calculate Delta Sfus and Delta Svap for K in J/mol-k
Tm(K) = 336, Delta H Fus(kJ/mol) = 2.33, Tb (K) =
5 answers
asked by
Katherine
11,174 views
What will be the equilibrium temperature when a 245-g block of copper at 285„aC is placed in a 145-g aluminum calorimeter cup
4 answers
asked by
lisa
3,094 views
Why does the calculated values of enthalpy change different from the reference values? Suggest two reasons.
4 answers
asked by
tina
3,590 views
An aluminum block absorbs 1.0 x 104 J of energy from the Sun when its temperature increases by 5.0 °C. What is the mass of the
4 answers
asked by
emily
1,634 views
The molar enthalpy of solution for ammonium chloride is 14.8kJ/mol. What is the final temperature observed when 20.0g of
4 answers
asked by
Han
3,671 views
A metal rod is 40.125 cm long at 20 °C and 40.148 cm long at 35 °C. calculate the coefficient of linear expansion of the rod
4 answers
asked by
selena
3,054 views
Derive the general heat conduction equation in cylindrical coordinates by applying the first law to the volume element.
4 answers
asked by
Farant
1,993 views
An empty aerosol-spray can at room temperature (20 ◦C) is thrown into an incinerator where the temperature reaches 458◦C. If
5 answers
asked by
Madi
5,182 views
A physicist converted 2 kg of water at 37 degrees celcius to steam at 100 degrees celcius. Assuming no heat is lost, calculate
4 answers
asked by
i need help
1,998 views
If 4.168 kJ of heat is added to a calorimeter containing 75.40 g of water, the temperature of the water and the calorimeter
4 answers
asked by
Anonymous
2,895 views
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