HomeworkLib
Question

volume and simultaneously heated to twice its initial temperature. 8. What is the efficiency of an engine when Thigh is 100°C and Tlow is 0°C? 9. The standard reaction enthalpy for the hydrogenation of propene, CH2=CHCH3(g) + H2(g)-→ CH3CH,CH3(g), is-124 kJ/mol. The standard enthalpy for the of nronene CHCH.CH 5 0 3 CO

Question #8

science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

8)
Thigh = 100 oC
= (273+100) k
= 373 k
Tlow = 0 oC
= 273 k

efficiency = {1 - (Tlow)/(Thigh)}*100
= (1 - 273/373)*100
= 26.8%

Answer : 26.8%

0 0
Add a comment
Know the answer?
Add Answer to:
Question #8 volume and simultaneously heated to twice its initial temperature. 8. What is the efficiency...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • please help Question 38 (8 points) What element is oxidized and what is the oxidizing agent...

    please help Question 38 (8 points) What element is oxidized and what is the oxidizing agent in the reaction below? Fe2O3(s) + 3CO(g) - 2Fe(s) + 3CO2(e) Iron is oxidized, and the oxidizing agent is Fe2O3. Carbon is oxidized, and the oxidizing agent is Fe2O3. Iron is oxidized, and the oxidizing agent is CO. Carbon is oxidized, and the oxidizing agent is Co. Question 39 (8 points) What isotope is depicted in the figure? Key =proton =neutron lithium-7 helium-3 helium-4...

  • Need ALL answered! 1. In the hydrogenation of ethylene using a nickel catalyst, the initial concentration...

    Need ALL answered! 1. In the hydrogenation of ethylene using a nickel catalyst, the initial concentration of ethylene is 1.80 mol⋅L−1 and its rate constant (k) is 0.0016 mol⋅L−1⋅s−1 . Determine the rate of reaction if it follows a zero-order reaction mechanism. Express your answer to two significant figures and include the appropriate units. 2. The reaction 2X →products is a second-order reaction, and the rate constant is 8.8 × 10−3 1/M·s. If the initial concentration of X is 3.00...

  • 1.) The specific heat of a certain type of metal is 0.128 J/(g⋅∘C). What is the...

    1.) The specific heat of a certain type of metal is 0.128 J/(g⋅∘C). What is the final temperature if 305J of heat is added to 41.7 g of this metal, initially at 20.0 ∘C? 2.) When 1723 J of heat energy is added to 42.3 g of hexane, C6H14, the temperature increases by 18.0 ∘C. Calculate the molar heat capacity of C6H14 3.) Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are...

  • Question 11 (8 points) For the nitrate ion, NO3. predict the bond energy between nitrogen and...

    Question 11 (8 points) For the nitrate ion, NO3. predict the bond energy between nitrogen and the oxygen labeled "A". The bond enthalpy of N-Ois 222 kJ.mol-1 and N-O is 590 k.mol-1 A :O: :0: :0: N :01 406 kJ mol-1 222 kJ.mol-1 590 kJ.mol-1 345 kJ mol 1 Question 12 (8 points) When a 45.0 g sample of an alloy at 100.0 °C is dropped into 100.0 g of water at 25.0°C, the final temperature is 37.0 °C. What...

  • Chemistry midterm help please! <3 7. What is the difference between the AU and AH of...

    Chemistry midterm help please! <3 7. What is the difference between the AU and AH of a reaction? A) AU is a state function, while AH is not a state function B) AH is a state function, while AU is not a state function. C) AU = heat of reaction at constant volume conditions; AH = heat of reaction at constant-pressure conditions D) AU is the heat of reaction, AH is the work done by the reaction E) AU =...

  • Typical Math Problems 1) What is the pH of a buffer solution which is 0.12M in...

    Typical Math Problems 1) What is the pH of a buffer solution which is 0.12M in benzoic acid, pKa 4.19, and is 0.11M in sodium benzoate? 2) Find the %-diss of a buffer if the pKa 7.10 and the pH of the buffer is 7.50. 3) A weak monoprotic acid has a pKa 6.15. 50.00 mL of an 0.1250M aqueous solution of this weak acid is titrated with 0.1000M Na0H. a) What is the equivalence point volume and ½ equivalence...

  • What results when a secondary alcohol is oxidized? a. a ketone d. an acid b. an...

    What results when a secondary alcohol is oxidized? a. a ketone d. an acid b. an amine e. no reaction c. an aldehyde Which of the following combinations will react spontaneously? A. 12 + Cu2+ B. Pb2+ + Ag C. Zn2+ + Mg D. Sn2+ + Ni2+ The general formula for a cycloalkane can be represented by which of the following? a. C,H, C. CH b. C.H2n+2 d. C.H21-2 In a certain reaction AH =-136 kJ and E, = 96...

  • I hope the answer is clear and correct thanks Question 1 (1 point) What is the...

    I hope the answer is clear and correct thanks Question 1 (1 point) What is the change in enthalpy (in kJ mol'?) for the following reaction F2(g) + Cabr,(s) CaF() + Brz(1) O 1) -112 kJmo12 O2) 504 kJmo11 03) -504 kJmol 1 04) 537 kJmo11 O 5) -537 kJmol'i Question 2 (1 point) What is true about the following reaction at 25°C? F,(g) + 2HCl(g) 2 2017(g) + H (9) Ahrº=76 kJ mol'i Asr°=-10.13 J mol'i Ki Agrº=79 kJ...

  • 2- Therro dynamics e that best completes the statement or answers the question TIPLE CHOICE. Choose...

    2- Therro dynamics e that best completes the statement or answers the question TIPLE CHOICE. Choose the one alternative that best completes the at 1) The SI unit for pressure is the A) newton. B) pascal C) MM Hg D) atmosphere. 2) The mixing of different gases by random molecular motion with freque A) diffusion. B) Dalton's law. C) compressibility. D) effusion 3) Entropy is a measure of A) the rate of a reaction. C) molecular randomness. B) free energy...

  • 10. Given the following table: Compound NO: (g) N:O (g) AHP (J mol) AGP (J mol) 51.84 33.85 9.66 98.29 For t...

    10. Given the following table: Compound NO: (g) N:O (g) AHP (J mol) AGP (J mol) 51.84 33.85 9.66 98.29 For the reaction: N:Oa (g) eo 2NO: (g) (a) Use the information in the Table to calculate AG for the reaction (b) Use the information in the Table to calculate AH" for the reaction (c) Calculate K, at 25 C. (d) Calculate K, at 1600 °C. (Assume AH to be temperature independent) (e) Calculate the degree of dissociation, a, of...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT