chemistry

I need to know where to start

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 assigned structure and characterization of material proposed to be sp carbon c) if what is correctly identified, should be legitimately be called an allotrope, and d) what do you believe Lagow's material is? Of course I have already done my own research, but there are certain things I do not understand. I understand the experiments both Lagow and Hirsch perfor... click for more

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 energy required to produce the corn. (b) Assume the yield of corn stover (cobs, stalks, leaves) is 3.4 dry metric tons per acre. The extra energy required to convert the stover to ethanol is 12000 kJ/gallon; and one dry ton of stover can produce 80 gallons of ethanol. Assuming only 35 percent of the stover is removed for conversion to ethanol, what would be the ne... click for more

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 atmosphere in 2000 was 360 ppm, corresponding to a total mass of 7.75E14 kg C. If the concentration of carbon dioxide in 1750 was 290 ppm, calculate the percentage of carbon dioxide from these two sources that remained in the atmosphere over the two and one-half century period. (b) Plant studies indicate the net primary production (NPP) of organic carbon by photosynth... click for more

Problem Set

1/Calculate the concentration of SO2(ppm) that must be reached in polluted air (in ppm) if the dissolved gas is to produce a pH of 3.8 in raindrops without any oxidation of the gas. 2/During a photochemical smog episode in the coastal city of Seattle, the steady-state concentration of oxygen radicals at ground level was measured to be 0.06 ppmv at 25 degrees celsius. Convert this value to: a. partial pressure in atm b. the molarity scale c. the molecules per cm-3 scale 3/A ground water sample , at 25 C, has Eh= 1.0 and pH=6.60. Assuming the system is at equilibrium, calculate the amount of dissolved oxygen (ppm) in the groundwater sample. Hint: [O2-aq]/[O2-g]=0.0012589 4/At ... click for more