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Some buses are electric, and the CO2 emitted by their operation would come from coal fired power plants. West coast electric buses would receive hydrologic power, emitting very little CO2.
Most buses are diesel powered, and average about 6 mpg. Since automobiles get about 20 mpg, a bus needs to carry 4 passengers to break even. More than that and the bus gains in efficiency over the typical passenger automobile. One gallon of fuel emits close to 20 pounds of CO2, even though the fuel itself weighs only 6.25 pounds. This is because the carbon in the fuel combines with oxygen in the air--a LOT of it.
So 20 pounds per gallon times a gallon every six miles equals 3.3 lbs per mile. The US Federal Transit Authority estimates each bus averages 37,000 miles per year. So that amounts to 123,000 lbs (62 tons) of CO2 per bus per year.
For the next part of the question we need to know how many buses there are. There are 450 to 480 thousand school buses in the US (close to half a million). The US probably has fewer buses per capita than most nations on earth, which rely more heavily on public transportation.
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How much carbon dioxide does each light bulb emit?
None. Light bulbs do not emit carbon dioxide. The electricity used to power the light bulb may have been produced by a method which emits carbon dioxide (then again, it may not have), but the bulb itself doesn't emit anything except heat and light.
How much carbon dioxide does ethanol produce?
The formula for ethanol is CH3CH2OH So for each mole of ethanol burnt it produces 2 moles of carbon dioxide 1 Mole of ethanol is 46 g 2 moles of carbon dioxide is (2 x 44 g) 88 g So each gram of ethanol produces 1.9 grams of carbon dioxide on combustion
How much atoms of carbon and of oxygen are in each molecule of carbon dioxide?
The name "carbon dioxide" tells you what it is made of and how many atoms are involved, as long as you know that "di" is one of the syllables that means "two." So one molecule of carbon dioxide has one atom of carbon and two atoms of oxygen.
How does saving energy reduce carbon dioxide emmisions?
Almost all fuel used to create energy (coal, oil, gas) causes carbon dioxide emissions, therefore not using aka saving energy will reduce carbon dioxide emissions. Nature produces most of the carbon dioxide. Man produces about 6% of all CO2 produced. Much of this by items that would otherwise rot and create CO2 naturally.
How much carbon can 22 grams of carbon dioxide make?
6 grams
How much Carbon Dioxide is produced by a toaster?
67%
How much carbon dioxide will be produced when one kilo of pure carbon burned?
C + O2 -------> CO2 12g of carbon produces 44g of carbon dioxide 1kg of carbon will produce 3-67kg of carbon dioxide
How much carbon dioxide produced with burning hydrocarbons?
This depends on the chemical composition of the hydrocarbon.
How much carbon dioxide does each light bulb emit?
None. Light bulbs do not emit carbon dioxide. The electricity used to power the light bulb may have been produced by a method which emits carbon dioxide (then again, it may not have), but the bulb itself doesn't emit anything except heat and light.
How much of human created carbon dioxide is produced by hydroelectric dams?
Only that required to build the dam and make its component machinery. Hydroelectric power (produced by the operation of the dam) does not produce any new carbon dioxide.
How much carbon dioxide is produced by the ocean?
The oceans are regarded as carbon dioxide sinks, not sources. This means they remove carbon dioxide, not produce it. Carbon dioxide dissolves from the air into ocean water. Once there it is removed by plankton and algae, by corals and mollusks in making shells, and by chemical action.
How much water is produced if g of methane and g of oxygen combine to form g of carbon dioxide?
From 16 g methane and 64 g oxygen are obtained 44 g carbon dioxide.
How much automotive exhaust is produced by cars each year?
Vehicle exhaust is mostly carbon dioxide, with a little water, carbon monoxide, hydrocarbons, and nitrogen oxides. This answer deals with the carbon dioxide content only.Sixteen percent (16%) of human carbon dioxide greenhouse gas emissions comes from road transport (cars, trucks and buses). Cars are responsible for about half of this (8%).Humans are responsible for around 35 billion tonnes of carbon dioxide emissions every year.Car emissions, 8% of that total, is around 2.8 billion tonnes of carbon dioxide (2,800,000,000).
Much of the carbon dioxide produced by green plants is not excreted as a metabolic waste because it?
can be used for photosynthesis
How much percent of carbon dioxide have in Sprite?
Sprite has 6% of carbon dioxide
How much carbon dioxide does ethanol produce?
The formula for ethanol is CH3CH2OH So for each mole of ethanol burnt it produces 2 moles of carbon dioxide 1 Mole of ethanol is 46 g 2 moles of carbon dioxide is (2 x 44 g) 88 g So each gram of ethanol produces 1.9 grams of carbon dioxide on combustion
How much atoms of carbon and of oxygen are in each molecule of carbon dioxide?
The name "carbon dioxide" tells you what it is made of and how many atoms are involved, as long as you know that "di" is one of the syllables that means "two." So one molecule of carbon dioxide has one atom of carbon and two atoms of oxygen.
