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Entropy
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Questions (178)
calculate the increase in entropy when 1gm of ice at -10C is converted into steam at 100C. specific heat of ice=0.5,
3 answers
asked by
mitu
735 views
You allow a gas to expand freely from volume V to volume 2V. Later you allow the gas to expand freely from volume 2V to volume
3 answers
asked by
chx
636 views
what is the residual entropy at T=0 k for 1 mol of C6H5Br Bromobenzene?
3 answers
asked by
Jamie
406 views
Determine the entropy change for the following displacement reaction. Cl2(g) + PbBr2(aq) → PbCl2(aq) + Br2(l).
DS: (J/K mol)
3 answers
asked by
Lily
1,431 views
Calculate S (measure of total entropy) for the following reaction at 25C and 1atm, and tell whether the entropy is increasing or
3 answers
asked by
Christina
931 views
1. Calculate ∆Sº for the reaction below:
N2(g)+O2(g)⇄2NO(g) where ∆Sº for N2(g), O2(g), & NO(g), respectively, is 191.5,
5 answers
asked by
apple
1,281 views
Let X,Y be discrete random variables related as Y=g(X), where g is a deterministic function. The ordering of their entropies
2 answers
asked by
digital communication
521 views
X and Y are discrete jointly distributed discrete valued random variables. The relation between their joint entropy H(X,Y) and
2 answers
asked by
digital communication
526 views
if delta s is high which means positive high entropy, then when a drug binds to a protein why is it negative delta s?
1 answer
asked by
suz
327 views
A sample of methane gas of mass 35 g at 250 K and 12.5 atm expands isothermally until its
pressure is 1.5 atm. Determine the
1 answer
asked by
AHMED
429 views
In which of the following physical states does a given substance have the highest entropy?
A. solid B. gas C. liquid D. all of
3 answers
asked by
louren
872 views
Help me please...! take home quiz >.<
A 1Kg of Water at 80 degree Celsius is added to 0.8Kg of water at 20 degree Celsius find
1 answer
asked by
shane
418 views
at its melting point, O c, the enthalpy of fusion of water is 1.435 kcal/mol. what is the molar entropy change for the melting
3 answers
asked by
thomas
779 views
Calculate the standard entropy change for the following reaction at 25 °C.
2 Al (s) + 3 ZnO (s) --> Al2O3 (s) + Zn (s) answer is
2 answers
asked by
Jen
1,186 views
A communication channel accepts the input X ?{0,1, 2,3} and outputs Y=X+Z whereZ is a binary random variable taking values -1
1 answer
asked by
Shanu
508 views
One end of a metal rod is in contact with a thermal reservoir at 745 K, and the other end is in contact with a thermal reservoir
1 answer
asked by
SUZAN
608 views
4. A 4.50-kg block of ice at 0.00 °C falls into the ocean and melts. The average temperature of the ocean is 3.50 °C,
3 answers
asked by
acinad
1,725 views
What is the value for ∆Soreaction for the following reaction, given the standard entropy values? 2 Al (s) + 3Cl2(g) 2AlCl3(s)
a
2 answers
asked by
gi
754 views
Cell Designation : E (measured)
= Sn I Sn^2+ II Cu^2+ I Cu Temp= 3 Celsius Temp= 276.15 Kelvin Delta G= ????? Show work
5 answers
asked by
Anonymous
428 views
The entropy of an isolated system always do what when natural processes occur?
4 answers
asked by
jasmine
574 views
When an amount of heat is transferred at a steady temperature, what happens to the entropy of the system gaining the heat?
a.It
1 answer
asked by
Janis
345 views
I need help with answering this question.
What is the absolute entropy of 1.9 mol of gaseous ammonia at 2.8 bar and 298 K?
1 answer
asked by
Anonymous
320 views
I need help with answering this question.
Thanks! What is the absolute entropy of 1.9 mol of gaseous ammonia at 2.8 bar and 298
1 answer
asked by
Anonymous
304 views
1/2 mole CCl4 @ 25 C was mixed with 1/2 mole CH2Cl2 @ 25C. The final T was 27 C. Calculate delta S mixing, delta S for CCl4 on
1 answer
asked by
Anonymous
370 views
What is the absolute entropy of 2.5 mol of gaseous methane at 1.3 bar and 298 K?
1 answer
asked by
Jason
412 views
A 0.5kg piece of metal (c = 600/kgK) at 300 degree celcius is dumped into a large pool of water at 20 degrees celcius. Assuming
3 answers
asked by
christ
523 views
what is the entropy of 10 molecules in a system of 100 boxes?
1 answer
asked by
sarah
723 views
A 95.1-g ice cube is initially at 0.0°C.
(b) What is the change in entropy of the environment in this process? ___________J/kg
2 answers
asked by
Ame
535 views
Given the standard molar entropies measured at 25 C and 1 ATM pressure calculate delta S for the reaction 2al + 3 mg0 ---> 3mg +
2 answers
asked by
Tilly
545 views
Entropy
1. Suppose a room has n molecules of a gas. We divide the room into k equal parts. How many ways can the molecules be
1 answer
asked by
Layla
429 views
Which choice below has the highest standard molar entropy?
SiCl4(s), CCl4(g), CCl4(l), Si(Cl4(l) I know that the gas state has
5 answers
asked by
Hannah
1,187 views
Biphenyl (C1 2H1 0) burned in a bomb calorimeter in
order to determine its heat of combustion. The heat capacity of the
1 answer
asked by
Anonymous
529 views
Consider a system consisting of two glass bulbs, each with volume V, and each containing n moles of gas. Bulb A contains nA
1 answer
asked by
Becky
421 views
Find the net change in entropy when 213 g of water at 0.0°C is added to 213 g of water at 96.9°C.
1 answer
asked by
melisa
359 views
when triangle s (entropy) is positive does that mean that the disorder has increased or decreased? Explain
1 answer
asked by
Maci
448 views
An ideal gas (volume 1.1m3, pressure 103600 Pa, temperature 400 K) undergoes an isothermal process during which it absorbs 2000
1 answer
asked by
Nick
371 views
An ideal gas (volume 1.1m3, pressure 103600 Pa, temperature 400 K) undergoes an isothermal process during which it absorbs 2000
1 answer
asked by
Kristy
419 views
determine the entropy change for the displacement reaction represented by the following equation :
Cl2 + PbBr2 -> PbCl2 + Br2 Cl2
2 answers
asked by
Capella
1,174 views
suppose a compound could point in any of the three directions in the solid and still have the same energy. how many molecules
1 answer
asked by
chemistry
498 views
Calculate S (measure of total entropy) for the following reaction at 25C and 1atm, and tell whether the entropy is increasing or
1 answer
asked by
Christina
923 views
A reaction has deltaHrxn=-127 kJ and delta S rxn=314 J/K. At what temperature is the change in entropy for the reaction equal to
4 answers
asked by
Natash
1,573 views
Which of the following conditions MUST be true for the entropy of a pure solid to be zero?
a) T must be 0 K b) The solid must be
4 answers
asked by
Sarah H
654 views
Which provides the greatest increase in entropy for a mole of substance?
a)Water melts at 0°C. b)Liquid water is heated from
2 answers
asked by
Sarah H
596 views
Tungsten has been used to make light bulb filaments since 1908. The melting point of tungsten is 3422C and the heat of fusion is
4 answers
asked by
Matt
551 views
I have a couple questions:
1. When analyzing which has greater entropy, do you look at the larger number or the smaller number?
2 answers
asked by
Taasha
585 views
1. Cl2(g) -> 2Cl(g)
2. H2(g) at 5.0 atm -> H2(g) at 1.0 atm 3. sublimation of solid CO2 4. 2H2(g) + O2(g) -> 2H20(g) 5. PCl5(g)
2 answers
asked by
alexa
840 views
Bobpursley:
Which of the following systems have high entropy? Which systems have low entropy? a. papers scattered randomly across
1 answer
asked by
anonymous
1,020 views
CCl3F boils at 23.8 degrees Celcius, and its molar heat of vaporization is 24.8 kJ/mol. Calculate the molar entropy of
4 answers
asked by
Kay
5,195 views
Identify the true statement(s) regarding the entropy of chemical substances.
a. All pure substances have a positive entropy at
5 answers
asked by
Anonymous
3,230 views
Calculate the value of ΔS when 1.10mol of Br2(l) is vaporized at 58.8 ∘C
3 answers
asked by
Austin
2,351 views
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Parent Categories (19)
Chemistry
Energy and Thermodynamics
Gas Laws
Heat Transfer
Ideal Gas Laws
Information Theory
Phase Changes
Physics
Probability and Statistics
Properties of substances
Reactions
Solid State Physics
Solution Chemistry
Solutions
States of Matter
Stoichiometry
Thermochemistry
Thermodynamics
Thermodynamics and Chemical Reactions