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Part A

Calculate the free energy change for the following reaction at 40 ∘C.
C3H8(g)+5O2(g)→3CO2(g)+4H2O(g)
ΔH∘rxn= -2217 kJ; ΔS∘rxn= 101.1 J/K.

Express your answer using four significant figures.

Part B

Is the reaction spontaneous?

Item 13 Methanol burns in oxygen to form carbon dioxide and water.Part A Write a balanced equation for the combustion of methanol. Write a balanced equation for the combustion of methanol. CH3OH(l)+3O2(g)→CO2(g)+3H2O(g) CH3OH(l)+O2(g)→CO2(g)+2H2O(g) CH3OH(l)+2O2(g)→2CO2(g)+4H2O(g) 2CH3OH(l)+3O2(g)→2CO2(g)+4H2O(g)

Part B Calculate ΔH∘rxn at 25 ∘C. ΔH∘rxn = kJ

Part C Calculate ΔS∘rxn at 25 ∘C. ΔS∘rxn =

Part D Calculate ΔG∘rxn at 25 ∘C. ΔG∘rxn = kJ

Part E Is the combustion of methanol spontaneous? Is the combustion of methanol spontaneous? spontaneous nonspontaneous

Methanol burns in oxygen to form carbon dioxide and water.

Part A Write a balanced equation for the combustion of methanol. 2CH3OH(l)+3O2(g)→2CO2(g)+4H2O(g)

Part B Calculate ΔH∘rxn at 25 C.

Part C Calculate ΔS∘rxn at 25 C.

Part D Calculate ΔG∘rxn at 25 ∘C.

Part E Is the combustion of methanol spontaneous?

Methanol burns in oxygen to form carbon dioxide and water.

2CH₃OH(l)+3O₂(g)→2CO₂(g)+4H₂O(g)

A) Calculate ΔS∘rxn at 29 degrees C. ΔS∘rxn = _______ J/K

B) Calculate ΔG∘rxn at 29 degrees C. ΔG∘rxn = _______ kJ

In photosynthesis, plants form glucose (C6H12O6) and oxygen from carbon dioxide and water. Calculate ΔH∘rxn at 25 ∘C Calculate ΔS∘rxn at 25 ∘C

In photosynthesis, plants form glucose (C6H12O6) and oxygen from carbon dioxide and water.

Write a balanced equation for photosynthesis and then answer the following questions:

Calculate ΔH∘rxn at 15 ∘C.

Calculate ΔS∘rxn at 15 ∘C.

Calculate ΔG∘rxn at 15 ∘C.

Is photosynthesis spontaneous?

In photosynthesis, plants form glucose (C6H12O6) and oxygen from carbon dioxide and water. Write a balanced equation for photosynthesis and calculate ΔH°rxn, ΔS°rxn, and ΔG°rxn at 25°C. Is photosynthesis spontaneous?

Given the values of ΔH∘rxn, ΔS∘rxn, and T below, determine ΔSuniv.

art A

ΔH∘rxn= 90 kJ , ΔSrxn= 148 J/K , T= 309 K

Express your answer using two significant figures.

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Part B

ΔH∘rxn= 90 kJ , ΔSrxn= 148 J/K , T= 755 K

Express your answer using one significant figure.

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Part C

ΔH∘rxn= 90 kJ , ΔSrxn=− 148 J/K , T= 309 K

Express your answer using two significant figures.

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Part D

ΔH∘rxn=− 90 kJ , ΔSrxn= 148 J/K , T= 401 K

Express your answer using two significant figures.

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Part E

Predict whether or not the reaction in part A will be spontaneous.

Predict whether or not the reaction in part A will be spontaneous.

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Part F

Predict whether or not the reaction in part B will be spontaneous.

Predict whether or not the reaction in part B will be spontaneous.

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Part G

Predict whether or not the reaction in part C will be spontaneous.

Predict whether or not the reaction in part C will be spontaneous.

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Part H

Predict whether or not the reaction in part D will be spontaneous.

Predict whether or not the reaction in part D will be spontaneous.

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Given the values of ΔH∘rxn, ΔS∘rxn, and T below, determine ΔSuniv.

Part A

ΔH∘rxn= 88 kJ , ΔSrxn= 155 J/K , T= 306 K

Express your answer using two significant figures.

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Part B

ΔH∘rxn= 88 kJ , ΔSrxn= 155 J/K , T= 754 K

Express your answer using one significant figure.

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Part C

ΔH∘rxn= 88 kJ , ΔSrxn=− 155 J/K , T= 306 K

Express your answer using two significant figures.

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Part D

ΔH∘rxn=− 88 kJ , ΔSrxn= 155 J/K , T= 401 K

Express your answer using two significant figures.

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Part E

Predict whether or not the reaction in part A will be spontaneous.

Predict whether or not the reaction in part A will be spontaneous.

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Part F

Predict whether or not the reaction in part B will be spontaneous.

Predict whether or not the reaction in part B will be spontaneous.

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Part G

Predict whether or not the reaction in part C will be spontaneous.

Predict whether or not the reaction in part C will be spontaneous.

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Part H

Predict whether or not the reaction in part D will be spontaneous.

Predict whether or not the reaction in part D will be spontaneous.

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Part A ΔH∘ for the following reaction 2SO2(g)+O2(g)→2SO3(g) Express your answer using one decimal place. ΔH∘ = -197.8 kJ SubmitMy AnswersGive Up Correct Significant Figures Feedback: Your answer −197 kJ was either rounded differently or used a different number of significant figures than required for this part. Part B ΔS∘ for this reaction. Express your answer using one decimal place. ΔS∘ = J/K SubmitMy AnswersGive Up Incorrect; Try Again; 4 attempts remaining Part C From the values of ΔH∘ and ΔS∘, calculate ΔG∘ at 25 ∘C. Express your answer using one decimal place. ΔG∘ = kJ SubmitMy AnswersGive Up Part D Predict whether this reaction is spontaneous under standard-state conditions. Predict whether this reaction is spontaneous under standard-state conditions. spontaneous under standard-state conditions nonspontaneous under standard-state conditions SubmitMy AnswersGive Up Part E ΔH∘ for the following reaction N2(g)+2H2(g)→N2H4(l) Express your answer using one decimal place. ΔH∘ = kJ SubmitMy AnswersGive Up Part F ΔS∘ for this reaction. Express your answer using one decimal place. ΔS∘ = J/K SubmitMy AnswersGive Up Part G From the values of ΔH∘ and ΔS∘, calculate ΔG∘ at 25 ∘C. Express your answer using one decimal place. ΔG∘ = kJ SubmitMy AnswersGive Up Part H Predict whether this reaction is spontaneous under standard-state conditions. Predict whether this reaction is spontaneous under standard-state conditions. spontaneous under standard-state conditions nonspontaneous under standard-state conditions SubmitMy AnswersGive Up Part I ΔH∘ for the following reaction CH3OH(l)+O2(g)→HCO2H(l)+H2O(l) Express your answer using one decimal place. ΔH∘ = kJ SubmitMy AnswersGive Up Part J ΔS∘ for this reaction. Express your answer using one decimal place. ΔS∘ = J/K SubmitMy AnswersGive Up Part K From the values of ΔH∘ and ΔS∘, calculate ΔG∘ at 25 ∘C. Express your answer using one decimal place. ΔG∘ = kJ SubmitMy AnswersGive Up Part L Predict whether this reaction is spontaneous under standard-state conditions. Predict whether this reaction is spontaneous under standard-state conditions. spontaneous under standard-state conditions nonspontaneous under standard-state conditions

Consider the reaction.

CaCO3(s)→CaO(s)+CO2(g)

Standard Thermodynamic Quantities for Selected Substances at 25 ∘C

Part A

295 K

Express your answer using one decimal place.

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Part B

1060 K

Express your answer using one decimal place.

Correct

Part B

1060 K Express your answer using one decimal place.

Part C

1440 K

Express your answer using one decimal place.

Calcium carbonate can be converted to quick lime by the following reaction: CaCO3(s) --> CaO(s) + CO2(g) Given that: for CaCO3(s) at 25°C DHf° = -1206.9 kJ/mol S° = 92.9 J/mol K, for CaO(s) DHf° = -635.5 kJ/mol S° = 39.8 J/mol K for CO2(g)) DHf° = -393.5 kJ/mol S° = 213.6 J/mol K Use these data to calculate DGo for the reaction.

Consider the decomposition reaction:

CaCO₃(s) <----> CaO(s) + CO₂(g)

a.) Using the thermodynamic tables, calculate DG^o and then K_p for this reaction.

b.) Calculate DH for this reaction and use it and your results in a.) in order to calculate K_p at 1200 K.

c.) Write the equilibrium constant expression for this reaction in terms of activities. Then replace the activity with the activity coefficient and pressure of CO₂ in your expression.

Y=1 / (1 -B * P)

where B is a constant having a value of 0.05 bar^-1

d.) Assuming y = 1, calculate a value for P_CO2. Use this to calculate y from the expression above. Recalculate P_CO2 and repeat until the pressure converges to a single value.

. What is the entropy change if 4.500 g of CaCO3(s) is placed ina container and allowed to decompose to CaO(s)

and CO2(g) according to the following reaction?

CaCO3(s)

?

? CaO(s) + CO2(g)

Substance S

Using the table provided below, what is the entropy change if 4.5 g of CaCO3(s) is placed in a container and allowed to decompose to CaO(s) and CO2(g) according to the following reaction?

CaCO3(s) ⇔ CaO(s) + CO2(g)

in J/K

Note: Report your final answer to the correct number of significant figures and include the sign (+/-).

The enthalpy and entropy of fusion of ice at 0.00°C are 6.01 kJ/mol and 22.0 J/mol × K, respectively. What is the entropy change of the universe when one mole of ice melts in a large room maintained at 34.00°C? Assume the final temperature of the water is 0.00°C.

+19.6 J/K

–19.6 J/K

+2.4 J/K

–2.4 J/K

+41.5 J/K

What is the entropy change if 4.50 g of CaCO3(s) is placed in a container and allowed to decompose to CaO(s) and CO2(g) according to the following reaction?

CaCO3(s) D CaO(s) + CO2(g)

Substance

S° (J/mol × K)

CaCO3(s)

92.88

CaO(s)

39.75

CO2(g)

213.6

+7.22 J/K

–161 J/K

+35.7 J/K

+161 J/K

+3.57 J/K

What is the standard entropy change when 10.0 g of methane reacts with 10.0 g of oxygen to form carbon dioxide and liquid water?

Substance

S° (J/mol × K)

CH4(g)

186.2

O2(g)

205.0

H2O(mc076-1.jpg)

70.0

CO2(g)

213.6

–121 J/K

–37.9 J/K

–243 J/K

–154 J/K

–16.8 J/K

Determine the value of DG° for the reaction 2 NO2(g) D N2O4(g), given

Substance

D Hf°(kJ/mol)

S° (J/mol × K)

NO2(g)

33.2

240.0

N2O4(g)

9.2

304.2

–4.8 kJ

+4.8 kJ

+52.3 kJ

–52.3 kJ

–43.0 kJ

Determine DGrxn for C4H10(mc095-1.jpg ) + mc095-2.jpg O2(g) D 4 CO2(g) + 5 H2O(g) given the following.

Substance

D Gf°(kJ/mol)

C4H10(mc095-3.jpg )

–15.0

CO2(g)

–394.4

H2O(g)

–228.57

–2705.5 kJ/mol

–608.0 kJ/mol

–1791.0 kJ/mol

–2735.5 kJ/mol

+608.0 kJ/mol

A) Suppose you dump a bucket of water (5.00kg at 15.0C) outside on a cold night where T = -10.0C, and the water spreads out over an area so large that the temperature of the ground remains at -10.0C, acting like an ideal “cold reservoir.” Calculate the entropy change of the water in going from 15.0C to -10.0C, and calculate the entropy change of the environment, absorbing heat while staying (approximately) at -10.0C. This problem requires you to use TWO equations for entropy change – of a substance changing temperature and for a substance with Q in or out but at constant T. I got somewhat less than 8000J/K for the “environment’s” ∆S.

B) Use your answers to part A to solve for the total entropy change of the UNIVERSE in that process (ie, add the entropy changes of all the parts, confirming that the entropy change of the UNIVERSE is positive.)

C) Some people uncomfortable with the idea of evolution try to argue against it because, they say, it says that more “ordered” organisms evolve from less ordered organisms. Since entropy is a measure of “disorder,” this can’t happen. Now suppose for a moment that if you really did calculate the entropy of a bunch of “biomass” of 1 billion years ago, full of primitive organisms and a few inorganic compounds, and the equivalent “biomass” of a few people, and you found that the entropy WAS lower for the people, indicating that, yes indeed, the more complex organisms DO have lower entropy than the equivalent “primitive stuff” of which they were made. Why does this STILL not violate the second law of thermodynamics? (Hint: is part B fundamentally different from part A of this exercise, or are they fundamentally the same?)

You received an unsolicited proposal from a self-declared inventor who is seeking investors for the development of his latest idea: a device that uses heat extracted from the ground by heat pump to boil water into steam that is used to heat a home and to power a steam engine that drives the heat pump. This procedure is potentially very lucrative because after an initial extraction of energy from the ground no fossil fuels would be required to keep the device running indefinitely. Would you invest in this idea? State your conclusion clearly and present detailed arguments to support it.

Writing assignment - Position Paper on the Impact of Technology 

You must support one of the following positions in a 5-7 paragraph essay:

1. The positive impact of technology far outweighs any negative effects.

2. The negative impact of advancements in technology felt by many people outweighs the positive effects enjoyed by few.

Select one or more technological advances, such as cell phones, the internet, stem cell research, etc., on which to focus your essay. Support your arguments with strong reasoning and with specific examples and evidence.

Top Scores (30 - 20) - The top scoring students will do the following:

At least three pros and three cons are mentioned

Demonstrates clear understanding of current issues. Specific problems are discussed and goals for the future are included.

Writing is clear and focused; holds reader's attention
The order and structure moves the reader through the text and the central idea of theme is clear.

The writing has a clear purpose and speaks clearly to the audience. It is compelling and engaging.

The argument is logical. The words are powerful and engaging. The message is conveyed precisely, and naturally.

The writing flows easily. Sentences are well built with a strong and varied structure.
The writing demonstrates a strong grasp of standard writing conventions.

Follow the picture for a better understanding of the assignment.

Injuries can be a mood buster. Especially for any kind of game, they can create a major issue.  One thing that can hamper any kind of gameplay is having an injury or getting injured on the ground. 

In this blog, we are going to discuss how baseball players like the Chicago Cubs players can keep themselves safe. If the team wants to win the match and keep playing in the same manner for more time then they need to pay attention towards their protection. 

1. Make sure that you are wearing the right kind and amount of gear. Never go into the field unprepared. If the right dress and gear are not worn then there are extremely high chances of injury. This is because baseball is not a slow sport. It is a fast sport. 

1. Before going into the field, the medical checkup of every player should be carried out properly. If there is any issue, then the player shouldn’t go out into the field. 

1. A good warm-up is always a must. Before every match and practice a pepper warm-up is required so that there is no issue in the upcoming hours. This helps in preventing unnecessary injury. A good warmed-up body has a lesser chance of any kind of injury. 

1. Practising using the right techniques is necessary. If the form during the pitching or batting is wrong then it can lead to unwanted injuries. There should be a good amount of focus when it comes to the form as it can make and break everything. 

Describe what you understand by the phrase "investing in your education."

Write a balanced chemical equation for the reaction of aqueous sodium carbonate with aqueous barium chloride to form solid barium carbonate and aqueous sodium chloride.

Express your answer as a chemical equation. Identify all of the phases in your answer.

Write a balanced chemical equation for this reaction.

A satellite is in a circular orbit around an unknown planet.The satellite has a speed of 1.65 x 10⁴ m/s, and the radius of the orbit is 5.05 x 10⁶ m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has a radius of 8.80 x 10⁶ m. What is the orbital speed of the second satellite?

A communications satellite moves in a circular orbit around Earth at a distance of 42,000 kilometres from the centre of Earth. The angular velocity   Radian per hour is constant.

Find the radial and angular components of acceleration for the satellite.

A 20-year old male suffering from malaria was treated with chloroquine and manifested as haemolytic anaemia. Provisional diagnosis of glucose-6-phosphate dehydrogenase (G6-PD) deficiency was made.

Questions
1-Which reaction is catalyzed by the enzyme G-6-PD)?

2-How does deficiency of G-6-PD produce haemolytic anaemia?

3-Name the pathway in which this reaction occurs

A deficiency in pyruvate carboxylase results in a reduction in anaplerosis (anaplerotic reaction). What specific compound is directly (immediately) reduced (decreased in amount) due to this deficiency that negatively affects the CAC?

#1. The degree of unsaturation, or index of hydrogen deficiency, is the number of pi bonds plus rings in a molecule.

Specify the degree of unsaturation (index of hydrogen deficiency) of the following formulas:

(a) C₂₆H₂₈

(b) C₁₁H₁₄

(c) C₈H₄Br₃N

#2. The degree of unsaturation, or index of hydrogen deficiency, is the number of pi bonds plus rings in a molecule.

Specify the degree of unsaturation (index of hydrogen deficiency) of the following formulas:

(a) C₁₉H₂₀

(b) C₆H₁₀O₃

(c) C₉H₁₂N₂

#3. The degree of unsaturation, or index of hydrogen deficiency, is the number of pi bonds plus rings in a molecule.

Specify the degree of unsaturation (index of hydrogen deficiency) of the following formulas:

(a) C₇H₈

(b) C₈H₈O₃

(c) C₁₀H₈N₂

Osteomalacia occurs due to the deficiency of 

In which year did Subhash Chandra Bose take over the command of the Azad Hind Fauj?

Compare the pH of the milk sample and the pH at which casein solid forms

What made Gravity?