How many pounds of prehistoric plant life yield one gallon of gasoline?
964733
196,000-that's 98 tons.
1133508
Are you aware that you are trying to convert volume into weight?  Depending on the substance 1 gallon can way 1/2 a pound or it can weigh 7 pounds.  Are you sure you are asking the right question?
1071773
PV=nRT\n\nV=nRT/P\n\nR=.08206\nT=373 K\nP= 1 atm.\n\nYou will have to figure out n, the number of moles in one gallon of water.  The answer will be in liters, convert it to gallons
875313
A car emits both CO and CO2, almost all CO2.\n\nStrictly speaking, pounds are a unit of weight, not of mass; however, 19 pounds of mass is correct.  The reason a 6 pound gallon of gasoline can create 19 pounds (mass) of CO2, is that about 13.7 lbs mass of oxygen in the air combines with the carbon in the gasoline and adds mass to the emissions.
303776
Gasoline + Oxygen = CO2 + H2O + NOx + SO4 + energy
525961
Peat yields 8.000 Million Btu/Ton according to the Department of Energy figures.  Dividing by 2,000 gives us 8 thousand BTU per pound.\n\nHope this helps!
313268
1.0 imperial gallon = 4.55 liter = 1.20 US gallon
429864
About a million years:\n\nSun puts out about 3.8*10^26 W\nWe use about 1.2*10^13 W\njust divide and convert from second into years.\n\n(this matches pretty good using the estimated 2005 eneregry consumption of about 4.6*10^27erg as well)
1128758
"The oldest indications for the existence of real land plants have been found in cores from boreholes in Oman. They contained fours of mutually connected spores (tetrads) enveloped by remains of the spore sac in which they had been formed. Research on the spore walls point to a relationship with the liverworts. The fossils have been found in the Middle Ordovician and are about 475 million years old."\n\nSee the link below for 2 pages of info on the development of this.
826469
fuels are hydrocarbons.  Fossil fuels, which are derived from fossils of animals which have died years ago.  Jewelry, such as gold, is simply gold...  Diamonds are made up of coal that has crystalized over millions of years.  Coins such as dimes are made up of nickel.  Penny's mostly copper, and some coins used to be made up of silver. Cookware is usually made up of tin, or iron (Sometimes silver, such as china.)  Detergent is made from petroleum which is derived from hydrocarbons.
824604
To end up with exactly one gallon, you would need 124.12 ounces to 3.87 ounces
347612
1 gallon (gal) = 8.345 pound(water) (lb(water))
474909
Petroleum Products Yielded from \nOne 55 Gal. Barrel of Crude, 2004\nProduct Gallons\n\nFinished Motor Gasoline 19.65\nDistillate Fuel Oil 10.03\nKero-Type Jet Fuel4.07\nResidual Fuel Oil1.72\nStill Gas 1.85\nPetroleum Coke2.18\nLiquefied Refinery Gas1.68\nAsphalt and Road Oil1.34\nNaptha for Feedstocks0.67\nOther Oils for Feedstocks 0.55\nLubricants0.46\nSpecial Naphthas0.13\nKerosene0.17\nMiscellaneous Products 0.17\nFinished Aviation Gasoline0.04\nWaxes0.04\n\nTotal44.77
479028
ALL ESTIMATES ARE ROUGHLY\nOil\nSpent in USA\n$100-150 billion every year on crude oil\nUsed in USA\n60 billion gallons of petroleum diesel\n120 billion gallons of gasoline\n\nBiodiesel\n\nTo grow the "feedstocks"\n$80,000 per hectare for algal ponds\n3.85 million hectares of algae ponds would be need to replace all petroleum transportation fuels with biodiesel\n$308 Billion just to build the farms\n\nOperating cost\n$12,000 per hectare\n$46.2 billion per year to yield all the oil feedstock necessary for the entire country\n\nI will add more fuel later must go watch TV now\n***EDIT***\nOk I am back, it turn out that makeing ethanol and biodiesel are around the exact same cost.  But I doubt that they will ever be a realistic source of fuel.\n\n I found this and thought you might find it interesting\n""...but producing ethanol or biodiesel from plant biomass is going down the wrong road, because you use more energy to produce these fuels than you get out from the combustion of these products.""\n\nStudies done everywhere show that cost and disposal of the bi-products are going to be a problem, plus energy wise its just not worth it.  They are working on these problems trying to figure something out to make it more feasible.\n\nIn terms of energy output compared with energy input for ethanol production, the study found that: \n\ncorn requires 29 percent more fossil energy than the fuel produced; \nswitch grass requires 45 percent more fossil energy than the fuel produced; and \nwood biomass requires 57 percent more fossil energy than the fuel produced. \n\nIn terms of energy output compared with the energy input for biodiesel production, the study found that: \n\nsoybean plants requires 27 percent more fossil energy than the fuel produced, and \nsunflower plants requires 118 percent more fossil energy than the fuel produced.
421068
Well if I remember this right...NASA was doing experiments a few years ago with rhubarb and pumpkin plants. The C02 oxygen exchange was the greatest. Also there was something about a genetically engineered algae they were trying out
785033
around 15 cents a gallon (memory). That was back when a dollar would go a long ways. Now  it is $3.00, so I guss the average would be about a dollar forty five.
594660
Save them.  I have actually used about 200 to get a gallon of gas before.  Of course, that was ages ago : )