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Thermodynamics
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Questions (11,560)
The specific heat of granite is 0.80 kJ/kg·°C. If 2.0 MJ of heat are added to a 100−kg granite statue of James Prescott
4 answers
asked by
Anonymous
1,128 views
CONTINUE>>>>>>>>>>>
The enthalpy changes for two different hydrogenation reactions of C2H2 are: C2H2+H2---->C2H4 Delta H 1 (there
3 answers
asked by
Anonymous
1,064 views
Ammonia (NH3) boils at -33oC; at this temperature it has a density of 0.81 g/cm3. The enthalpy of formation of NH3(g) is
3 answers
asked by
Morgan
1,959 views
i.imgur. com/VWFwb. png
3 answers
asked by
Matthew
724 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
707 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
913 views
What does temperature measure?(1 point)
Responses average kinetic energy of the particles in an object or substance average
1 answer
asked anonymously
64 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
33 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
6,381 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
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
2,272 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
2,945 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
2,514 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
2,702 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
1,030 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
1,119 views
Calculate the energy absorbed when 8.5g of ice is melted at 0 Celsius.
thank you
4 answers
asked by
happy
2,495 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
905 views
If the pressure on the surface of water in the liquid state is 30 kpa, the water will boil at... 0, 30, 70, or 100 degrees c?
5 answers
asked by
lost
3,729 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
22,278 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
4,703 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
9,848 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
23,566 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
6,089 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
3,634 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
8,135 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
5,500 views
Under constant pressure, a system of gases is sealed in a cylinder and then allowed to expand. What can you conclude about the
11 answers
asked by
jessie
3,428 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
2,912 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
4,235 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
3,414 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
2,673 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
5,799 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
4,825 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
2,201 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
2,276 views
Calculate the total heat content of 10 kg of ice at -23°C. (Hint: absolute zero is -273°C.)
Be mindful of significant figure
5 answers
asked by
Kathryn
1,296 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)
4,171 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
3,087 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
6,784 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
1,414 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
2,275 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
3,213 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
11,171 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
3,092 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
1,630 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
3,668 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
3,051 views
Derive the general heat conduction equation in cylindrical coordinates by applying the first law to the volume element.
4 answers
asked by
Farant
1,989 views
A cube of ice is take from the freezer at -8.5C and placed in a 95g calorimeter aluminum cup containing 310g of water at 20degC.
4 answers
asked by
Mark
2,525 views
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