Thermodynamics and energy, Biology

Assignment Help:

Thermodynamics and Energy

  • 2 types of energy (kinetic and potential)
  • Work is the transfer of energy from one place to another
  • Energy isn't lost, only converted è first law of thermodynamics
  • Bond energy is the measure of the stability of a covalent bond
  • Activation energy à the energy it takes to reach the transition state
  • Transition state à the temporary condition in which the bonds of the reactants are breaking and the bonds of the products are forming

 

 

The Combustion Accountant

1.      Draw out molecule to see all bonds

2.      Take each type of bond

a.      Energy produced x # of bonds

3.      Add the energy of the molecule

4.      Do this for all reactants and then again for all products

5.      Add the energy of the reactants together (same with products)

6.      Take the ΔHproducts - ΔHreactants = 'actual' yeild

7.      Find the theoretical yield (in appendix or given)

8.      Theoretical - actual / actual  x 100%  = percent difference

 

  • ΔH->enthalpy à energy change in a reaction (negative is exothermic and positive is endothermic)
    • Exogonic reactions are more spontaneous then endogonic ones
  • ΔS-> Entropy à the measure of the disorder in a system
    • Increase in entropy is favoured
  • Gibbs free energy ΔG
    • Useful energy that can perform work
  • Energy will be lost as heat when converted è second law of thermodynamics
  • Metabolic processes are reversible

 


Related Discussions:- Thermodynamics and energy

What are the sources of nutrients of cornea, What are the Sources of Nutrie...

What are the Sources of Nutrients of Cornea? Sources of Nutrients of Cornea: 1) Oxygen for the endothelium comes from aqueous humour and for epithelium from atmosphere th

Describe the technique of food processing, Technique of food processing ...

Technique of food processing Freezing is another ancient technique of food processing, which allows the transportation of perishable food items for long distances from producti

What are chloroplasts, What is the main function of chloroplasts? Ans) C...

What is the main function of chloroplasts? Ans) Chloroplasts are organelles represent in the cytoplasm of plant and algae cells. Similarly mitochondria, chloroplasts have two bo

Taxonomy, A In taxonomy, what is a "KEY" ? List the different types of key...

A In taxonomy, what is a "KEY" ? List the different types of keys. How are they prepared and what are they used for ?sk question #Minimum 100 words accepted#

How calcium prevents luxury consumption of potassium, How calcium prevents ...

How calcium prevents luxury consumption of potassium Increasing Ca:K ratio in soil solution depresses the uptake of potassium. Thus one of the harmful effects of over liming m

What are some common laboratory techniques, What are some common laboratory...

What are some common laboratory techniques? During the course of these laboratory sessions, you will be usual to become proficient in the performance of the following laborator

History of evolution, History of evolution? Evolution is usually define...

History of evolution? Evolution is usually defined as "change over time." In spite of the incredible diversity of life found on Earth, many fundamental characteristics are shar

Define birth weight - etiological factors for obesity, Define Birth weight ...

Define Birth weight - etiological factors for obesity? It has been shown that slow growth of the foetus in utero and during infancy is followed by accelerated weight gain in ch

Write the meaning of diabetes mellitus, Q. Write the meaning of diabetes me...

Q. Write the meaning of diabetes mellitus? The word "diabetes" is from the Greek word meaning "a siphon". Diabetes patients had polyuria (passing excessive urine) and "pass it

Explain with reference to aquatic ecosystem, That is eutrophication? Explai...

That is eutrophication? Explain with reference to aquatic ecosystem. or Name any two source organisms of agar. List any four areas in which agar has wide application.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd