how much fuel does a rocket need I just want to know how many gallons of gas does it need how much does it cost
217024
All depends on how far you want the rocket to go and how much mass you want to get there. Missiles use rocket engines too; they don't need much fuel and are mostly solid fuelled.\n\nA standard Ariane 5 puts up 6.7 tonnes into geostationary orbit and uses two solid rocket boosters with 237.8 tonnes of solid fuel in, one main liquid fuel rocket engine burning 132.27 tonnes of liquid oxygen and 25.84 tonnes of liquid hydrogen and an upper stage burning 9.7 tonnes of Hydrazine / N2O2. Other slightly more powerful versions can put 9.6 tonnes into geostationary orbit.
409735
http://www.howstuffworks.com/gas-price.htm
505747
Let x be the amount of gallons you used:\n\nThere is a flat charge of $55 for the first 6,000 gallons.  So start with that.\n\nThen you need to add the excess charge.  The charge is 0.20 per gallon over 6000.  \n\nThe hard part is figuring out how to write the excess of 6000 gallons.  If I had used 7000, it would be 1000.  If I had used 8000, it would be 2000.  So in general, you would write (x - 6000).\n\nPutting it all together:\nWater bill = 55 + (x - 6000) * 0.20\n\nNow technically, you have two formulas.  You have one for amounts under 6000, and one for amounts over 6000.\n\nFor x <= 6000,\nf(x) = 55\n\nFor x > 6000\nf(x) = 55 + (x - 6000) * 0.20
118991
why do we pay $1 for 16 oz. of the most abundant resource on earth? because they've polluted most of the free flowing water. i figure there's somebody out there just filling up bottles with tap water and selling it and making a killing! but i still buy my water in bottles. at least the price of gas fluctuates!
427616
Hi. The term MPG means Miles Per Gallon, or miles divided by gallons used. You used 8.9 gallons to go 426 miles, so... 426/8.9 is MPG. The rest is easy!
501677
There is about 20% oxygen in the air which is more than enough.\n\nAlthough a pound is 454 grams. you asked about gallons. Gasoline is about 6 pounds per gallon.\n\nMost gasoline is burned in internal combustion engines which do not burn it completely.It forms carbon monoxide.\n\nGasoline is not pure octane, C8H18 \n\n 2C8H18 + 25O2 ---> 16CO2 + 18H2O \n\nNow you can work out the rest, 2 moles of octane to 25 moles of O2. Use themolecular weight per mole of each.Figure out how many moles of octane yoy have.
543221
If you can figure out how to calculate the number of grams of O2 it takes, then you just need to us Pv = nRT to get the volume. I forget the equation for combustion though...need a combustion/engine textbook.
545607
Pollution caused by space launches:\n\nThe magnitude of space launch combustion products can be illustrated by a \ncomparison of the amount of fuel consumed by a  space shuttle launch with \nthe amount of gasoline consumed in the United States in one day:\n\nSpace shuttle fuel consumed in a launch:  3.5 million pounds\nGasoline consumed in one day in the US - 2,500 million pounds\nIn other words, one space shuttle launch is equivalent to about two minutes \nof gasoline consumption in the United States.\n\nThere were 78 space launches worldwide in 1999, almost all much smaller \nthan the space shuttle.\n\nThe pollution caused by space launches depends not only on the total \nquantity of the fuels used, but on their chemical composition..\n\n Propellants used for powering space launches are of four types:\n\n1. Solid  - Propellants that are a mixture of solid chemicals - a fuel and \nan oxidizer - that burn at a rapid rate when ignited, expelling hot gasses \nfrom a nozzle to achieve thrust. Fireworks are an example of the use of \nthis kind of propellant. The combustion products depend on the chemicals \nused. The space shuttle uses potassium perchlorate (KClO4) and powdered \naluminum. The combustion products are  potassium chloride and aluminum \noxide  \n\n2. Cryogenic - In space propellants, this refers to liquid hydrogen (LH) \nand liquid oxygen (LOX), which burn when mixed and ignited. LOX is a liquid \nbelow -298 degrees F and LH is a liquid below  -423 degrees F. They are \nstored in the space vehicle in insulated tanks and pumped into the rocket \nengines where they burn to expel hot gases.  The LOX/LH combination is by \nfar the most efficient in the amount of thrust per pound of fuel.  The \ncombustion product is water vapor.\n\n3. Petroleum - Instead of liquid hydrogen, a purified kerosene is used as \nthe fuel and is mixed with liquid oxygen and burned in the engine. The \ncombustion products are carbon dioxide and water vapor. This fuel system is \nusually used in launches of smaller rockets where the complications of \nhandling liquid hydrogen are not justified. \n\n4. Hypergolic - fuels and oxidants that ignite on contact without an \nignition source.  These are generally used for maneuvering after the soak \nvehicle has reached orbit. The combustion products depend on the chemicals \nused.  The space shuttle uses monomethyl hydrazine (N2CH6) and nitrogen \ntetroxide (N2O4).  The combustion products are nitrogen, water vapor and \ncarbon dioxide.\n\nThe pollution effects of the four types of fuels are:\n\nSolid fuel - The major combustion products of potassium chloride and \naluminum oxide and relatively innocuous.  Potassium chloride is used as a \nfertilizer and has medicinal uses.  Aluminum oxide is an unreactive \ncompound and is used as an abrasive.\n\nCryogenic - The only combustion product of LH/LOX is water.\n\nPetroleum - The combustion products of water and carbon dioxide are \nharmless except of any possible contribution of carbon dioxide to global \nwarming, but the carbon dioxide from this source  would be infinitesimal \ncompared to the energy produced by burning  coal and petroleum\n\nHypergolic - The combustion products of this kind of fuel are not a \npollution problem. In any event this fuel is used only in small quantities \nfor maneuvering.\n\nThe space shuttle uses about 2.3 million pounds of solid propellant in the \nlaunch boosters and about 1.2 million pounds of LH/LOX in the main engines. \nA relatively small amount of hypergolic fuel is used for controlling the \nshuttle once in orbit. Kerosene/LOX propellant is not used.\n\nWith regard to possible effect on the ozone layer, the only combustion \nproduct that would be suspect is the chloride ion of potassium chloride. \nStudies have shown that in contrast to organic chlorine (as in banned \nrefrigerants) inorganic chloride does not persist in the altitudes of the \nozone layer and is not a factor in ozone depletion.
221631
It will cost about $1 billion to get to Mars. The atmosphere is carbon dioxide. You can't breathe it. There is no weather on Mars. THe Size of MArs is about one-eighth the size of Earth.
653415
What sort of gallon?\n\nYou can see from http://en.wikipedia.org/wiki/Gallon that there are several units that have that name
558248
Yes this is an important topic.\nthe amount is tiny really.\nwhy not try to blow up a balloon and never burst it then all th gas will be traped and not effect the environment\nx x x
289402
Ok, what gas is required for combustion??  OXYGEN!\nHydrogen and oxygen combine and release large amounts of energy/heat while form water in small amounts (in the form of vapor).  \n\nAs for other gases, carbon is the element "burning", but there must be oxygen present in the moluecule or in the environment to burn.\n\nThis is different for hydrogen in stars, which are undergoing fusion.
160066
For example, hydrogen burns in oxygen to form water vapor. \n\n2H2(g) + O2(g) -> H2O(g) \nHow much hydrogen must be burned to form 1.00 L of water vapor at 1.00 atm pressure and 3000C? \nTo work this problem, we need to figure out how many moles of water vapor we need to form. Use the ideal gas equation to compute this: \n\nPV = nRT \n1.00 atm * 1.00 L = n*0.0821 (L*atm/mol*K)* 473 K \nn = 0.0258 moles \nThus, we need to form 0.0258 moles of water. Now it's just a basic stoichiometry problem: for each mole of water formed, you need 2 moles of hydrogen gas, so 0.0258 moles water * 2 moles H2/1 mole water = 0.0516 moles of hydrogen \n\n=====================================================\n\nthis will help you a lot\n\nhttp://www.chem.hawaii.edu/asato161/Ch10NotesP2.pdf#search='Gas%20Stoichiometry%20PV%3DnRT'\n\nhttp://members.aol.com/profchm/gasstoic.html
202555
Hi\nYou can just use a simple plastic water,drink or juice bottle.\n\nIMPORTANT NOTE:your rocket may not work if you use a screw lid.\n\nTo make rocket:\n1 Tape a straw to the side of the bottle:make sure that one end of the straw is within 1-2cm of the top of your bottle\n\nTo make launch pad:\n1 Insert skewer into a round piece of cardboard so that the skewer is standing securely upright.\n\nTo launch rocket:\n1 Insert one of the following fuels:\n   1x crushed alka-selzer tablet and 15ml of water \n   1 teaspoon of baking soda and 40mL of vinegar.\n2 Then put on the lid on as soon as the substance(s) are in the rocket.\n3 Place rocket on launch pad so that the skewer goes through the straw.\n4 watch in amazement as your rocket takes off!
442797
Hydrogen, H2O one of mans greatest needs\n\nFor more go to :\nhttp://en.wikipedia.org/wiki/Oxygen
78986
How much do you need?
444479
Bottle Rockets with Water. You can test for how high to get the rocket to go, like amount of water to amount of pressure in the bottle. Its a fairly cheap thing to do, you just need an open field. you need data tables and record keepers. you need atleast 2people on this, 3 would make it alot easier.