What happens to the black from oil?
400506
"Crude oil" as it comes out of the ground gets refined (basically distilled) into many different components.  The major ones are methane (natural gas), naptha, gasoline, kerosene, diesel, lubricating oils, heavy oils, and residual solids.  The farther down that list, the darker the color.\n\nMany of the residual solids end up in products such as tar and asphalt.  That's where all the "black stuff" goes.
317986
Lightly rub it on the unglazed rim on the bottom of a cup or other piece of porcelain - if it is gold you will get a gold mark if it is not gold you'll get a black mark.
91379
Oil followed by coal.
1028561
By black gold, I assume you mean oil.\nWWII - domestic (Texas and Oklahoma)\nForeign - Balkans, middle east, Asia
418312
nothing will happen, it will just get soaked. But if you used acid or diluted acid it will become more thin. Acid will eat away the shell.
908580
sounds like ingrown hairs.  they can raise like a pimple, get puss like a pimple, or fill with blood.  if they pop, they can bleed and it can be tramatic to the skin.  saying they went black, usually is just due to the blood in them or drying blood.  try soaking in a hot tub when you get them and GENTLY exfoliating the area.
1059922
bec the color black hide alot of 'thing'
993375
Depends on what you mean.\n\nDoes an oil's viscosity change over time when used (for example, in an engine or gearbox)? Yes - although the changes aren't necessarily predictable. Theoretically, as oil is used in an engine it will oxidise and the oil will thicken, it will also pick-up carbon from the fuel combustion and will thicken, and the engine will "boil off" light ends in the oil causing it to thicken. However the oil can also absorb unburned fuel which can - in the short term - cause viscosity loss. Also, if the oil is a multigrade oil with polymeric viscosity improvers the engine can "shear" the VI improver and thin the oil. So, an engine oil's viscosity in use is dependant on a balance of these effects and is, therefor, dependent on its chemistry, the engine's mechanical condition, running conditions, fuel type, etc.\n\nGear oils are a little easier to predict - they will thicken over time in use as the oil oxidises. VI improvers are normally not present and don't interfere.\n\nIf, OTOH you are asking whether the viscosity of an oil stored in a bottle or drum will change the answer is "no" -  not in any way that will make a diffence to its use. You could store a gear oil or engine oil for 20 years and not see a substantial change - the oil may oxidise a little bit but the effect on viscosity will be negligable and, in all liklihood, the oil will have antioxidants added to it to block the oxidation anyway.
238279
If you're referring to old-fashioned black powder, one constituent is water-soluble and another is soluble in carbon disulfide. Following washes in these two solvents you will be left with the third constituent.
157410
It gets cooked. If it's still in the shell, it will explode.
405824
There will be no more oil
163077
Good question.  My guess is it's probably the same as with most oil-producing substances -- cold press.  And lots of beans.  You're probably better off using raw green coffee beans, if you can find them.
958132
No.. It does about the same amount of damage.  \nThat little oil is a very small amount compared to all that  mozzarella cheese  going to be devoured..
679297
Not necessarily.  Oil that spills on the ground or into the water and is *never* recovered is a waste, but there's still plenty of energy inherent to the oil to make it worthwhile -- if the price is right.\n\nThe fact that the oil gushes out of the ground is because the drilling process has punctured a "bubble" (for lack of a better term) of petroleum that is under high pressure underground.  The puncture releases that pressure and forces the oil to the surface.  Now the trick is to control that flow without wasting any.\n\nOnce we control the flow of oil, it is then processed to make the petroleum products we have come to rely on so heavily -- motor oils, gasoline, aircraft fuels, kerosene, diesel, etc.\n\nA few years back, I was on the island of Aruba.  We visited one of the largest petroleum refineries in the world there -- produced something like 70% of the aviation fuel used by the Allies during the Second World War.  All the waste products they didn't need were dumped in a giant slag heap on one end of the island.\n\nForty years later, when oil prices had risen significantly, it became economically feasible to recycle that petroleum slag heap to produce more useful fuels from it.  So it didn't go to waste, it just wasn't the time.
797283
Heat will also help break up oil.  Look at a grease-ridden frying pan after washing it with cold water and soap.  Then look at it after you have to wash it again in hot water.
738770
Do it outside on concrete. DON'T DO IT IN THE GRASS. Make sure to wear pants and long sleaves so the oil doesn't splatter all over you. Just use common since
646111
You can turn it black with an iodine solution, then turn it back with sodium thiosulphate solution. Neat trick.