sp hybridization carbon allotrope. Does it exist?

I need to write a paper. The topic is "Does a new sp allotrope of carbon exist"? Basically, we must state our opinion on if a new allotrope of carbon exists. (of sp hybridization to be exact) The requirements are: a) summarize the experimental basis for the proposed structure b)suggest reasons to be skeptical about the ...continues

Calculate the ratio of embodied energy in the ethanol

(a) An acre of corn can produce about 380 gallons of ethanol, using only the kernel of the corn for conversion to ethanol. Assume the energy input to produce an acre of corn is 20000000 kJ. If a gallon of ethanol has an embodied energy in the ethanol of about 80000 kJ, calculate the ratio of embodied energy in the ethanol to the ...continues

Carbon budget in the world from 1750 to 2000

(a) The total mass of carbon contained in fossil fuels that was burned in the world from 1750 to 2000 was estimated to be 2.5 x E14 kg C. The amount of carbon released as carbon dioxide from agricultural expansion and deforestation over this period is estimated to be 1.2 x E14 kg C. The concentration of carbon dioxide in the atm ...continues

Problem set

a) Photosynthesis is estimated to produce 380.0 g (dry weight) of plant matter per square meter, 50% of which is carbon. Calculate the total number of grams of carbon "fixed" each year by 1000 square meters. b) The photosynthetic reaction can be represented as: 6CO2 + 6H2O -> C6H12O6 + 6O2 Of the glucose produced, 10.0% is ...continues

Lipids

1) How would you sketch the structure of a triester of glycerol containing 1 oleic acid residue and 2 linoleic acid residues. NEED TO LABEL the residues too. 2) How would you predict the solubility of (1) corn oil in water; (2) corn oil in hexane; (3) corn oil in alchohol using general solubility rules and what we know abo ...continues

Lipids

Methanol, Ethanol, & 1-Propanol 1) How would you sketch these three alcohol molecules? 2) What is each of their polarity? 3) What differences might you expect in the comparative solubility of each of them in lipids? WHY??? 4) If you were to add 2 drops of sheep blood to each of these alcohols (about 1/3 of a small te ...continues

Buffering Action of Proteins

We did this experiment in class but I want to see if the results seem reasonable and, if so, why they were not more varied. 1) Beginning with 10 mL of unbuffered, demineralized water, add 2 drops of 0.1 M HCl at a time, checking the pH every two drops. Results were as follows: # Drops of acid pH ...continues

Lipids

1) What are the ingredients of a cephalin? 2) Which fatty acid is always unsaturated in a cephalin? Why? 3) What is the enzyme system used in the formation of the prostalandins and thromboxanes? 4) Would you expect sodium ions (Na+) to be able to pass easily into a cell through bi-layer membrane wall? Why or Why not ...continues

Protein Denaturation

1) Where on the Periodic Table do elements that denature albumin seem to occur? 2) Which additional metal ions would you expect to cause denaturation of proteins? WHY? 3) If the pH of fresh milk is 7 and the pH of whey is 5 and the pH of water acidified with lactic acid is 2, why is there a difference between the pH of ...continues

Activity of an Enzyme

1) Knowing that enzymes act as catalysts in the chemical reactions which take place in living cells, and that they are also protein molecules and protein activity is affected by certain environmental factors, WHAT PREDICTIONS CAN BE MADE ABOUT THE EFFECT OF TEMPERATURE ON ENZYME ACTIVITY AND WHY? 2) Starting with 4 test tub ...continues