14 Answered Questions for the topic Entropy

03/13/21

#### How can I use standard entropies and heats of formation to calculate ΔGƒ° at a certain temperature (°C)?

Use standard entropies and heats of formation to calculate ΔGƒ° at 25°C for the following compounds:a) ammonium nitrate (s)b) chloroform, CHCl3(l)﻿c) potassium chloride (s)

03/11/21

#### (Entropy, ΔS°) Predict the sign of ΔS for the following.

a) a lake freezingb) precipitating lead chloridec) a candle burningd) weeding a garden
Entropy Chemistry

07/21/19

#### Calculating Entropy Change When Burning A Substance

Calculate the entropy change from burning 65.9 g of graphite to produce gaseous carbon dioxide, using the values in the table below. Substance S0 / J... more
Entropy Chemistry

04/21/19

#### AP Chemistry Entropy Question

3Ag(s) + 4HNO3(aq) = 3AgNO3(aq) + NO(g) + 2H2O(l) a) Predict the sign of the entropy change, Delta S, for the reaction. Justify your answer. b) Use the information the table below to calculate the... more

08/29/18

#### When does the entropy usually increase?

Some of the answers are below, maybe you can help by answering which one's correct? A. Molecule broken into two or more. B. Reaction results in increasing in No. Of gas moles. C. solid changes... more
Entropy

02/13/18

#### Calculate the change in free energy for 4NH3 +7O2 yields 4NO2 +6H2O

How do we work this problem?
Entropy

01/01/18

#### Calculate the change in entropy (ΔS) with with no values to entropy ?

How can I Calculate the change in entropy (ΔS) at 1 ATM and 100 ◦C with No entropy values to the reactions:   H2O(l) → H2O(g) ΔH = + 4067 KJ/mol?
Entropy

12/16/17

There are two gases A and B. Temperature of both gases is increased,but keeping the volume of gas A constant and pressure of gas B constant. What happens to entropy ,does Entropy of A increases or... more
Entropy

11/05/17

#### Entropy - Thermodynamics

When 50g of water is heated from 0°C to 100°C. Find the entropy.
Entropy

12/17/16

#### is it true that once a deck of cards is shuffled out of order, no amount of additional shuffling will return it to original order?

This is what Sir Arthur Eddington said, but it seems to me that the order in a deck of cards is purely imaginary.  There is nothing natural about it.  So its not a matter of reintroducing order,... more

07/10/15

#### Physics: Thermodynamics (ice)

If a 0.06247 kg ice cube initially at 0.00 C is allowed to melt in a Styrofoam cup holding 0.497 kg of water at 10.0 C , what is the total entropy change for this process?

07/09/15

#### Physics: Entropy Change

If a 0.06247 kg ice cube initially at 0.00 C is allowed to melt in a Styrofoam cup holding 0.497 kg of water at 10.0 C , what is the total entropy change for this process?
Entropy Math Physics Mass

07/05/15

#### Physics: Entropy Change

If a 0.06247 kg ice cube initially at 0.00 C is allowed to melt in a Styrofoam cup holding 0.497 kg of water at 10.0 C , what is the total entropy change for this process?

03/25/15

#### Chemistry help?? Please show work so i will be able to do it on my own!

If I have 45.0 grams of carbon in one pile and 60.0 grams of carbon in the other, which sample of carbon has more entropy?   If a reaction is endothermic and has a positive ΔS, what should you do... more

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