Biofuels release a lower net amount of CO2 to the atmosphere when they are burned than...
Biofuels release a lower net amount of CO2 to the atmosphere when they are burned than fossil fuels. How is this possible?
Homework Answers
Burning biomass produce carbon dioxide wether Biofuel or Fossil fuel But the growing biofuel crops have taken p carbon dioxide from atmosphere during their growth to form the biomass over the preceding months to year So when it burn it has no net impact on atmospheric carbon dioxide
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Biofuels release a lower net amount of CO2 to the
atmosphere when they are burned than...
When elemental carbon is burned in the open atmosphere, with plenty of oxygen gas present, the...
When elemental carbon is burned in the open atmosphere, with plenty of oxygen gas present, the product is carbon dioxide. C(s)+O2(g) -> CO2(g) However, when the amount of oxygen present during the burning of the carbon is restricted, carbon monoxide is more likely to result. 2C(s)+O2(g) -> 2CO(g) What mass of each product is expected when a 8.60 g sample of pure carbon is burned under each of these conditions? ____g CO2 ____ g CO
The organic molecules of living organisms have a measurably lower ratio of carbon-13/carbon-12, two stable isotopes...
The organic molecules of living organisms have a measurably lower ratio of carbon-13/carbon-12, two stable isotopes of carbon. The ratio of carbon 13/carbon-12 is higher in non-organic molecules. What does this tell us about the rise in CO2 in the atmosphere over the last century? O Carbon dioxide molecules containg carbon-13 are heavier and sink to the ocean depths, making them less available to organisms. O The source of CO2 rise in the atmosphere is definitely due to the burning...
1. When a plant photosynthesizes, the carbon used by the plant to construct organic molecules comes...
1. When a plant photosynthesizes, the carbon used by the plant to construct organic molecules comes from a. CO2 in the atmosphere b. CO2 in the soil c. Organic carbon in the soil d. Single carbon atoms in the atmosphere e. Any of these sources 2. CO2 in the atmosphere (choose all that apply) I. Has increased in the last 100 years due to burning of fossil fuels II. Has increased in the last 100 years due to deforestation III....
Please summarise below in a concise way. Alternative energy is studied as a result of the increas...
Please summarise below in a concise way. Alternative energy is studied as a result of the increasing costs of energy, the harm that fossil fuel may be costing the planet and the fact the energy demand is going up and the supply of fossil fuels may be going down. Energy and economic growth have always been going up, the more energy we consume, the more wealth we create as seen in the GDP of developed nations such as the USA,...
Calculate the number of pounds of CO2 released into the atmosphere when a 19.0-gallon tank of...
Calculate the number of pounds of CO2 released into the atmosphere when a 19.0-gallon tank of gasoline is burned in an automobile engine. Assume that gasoline is primarily octane, C8H18, and that the density of gasoline is 0.692 g·mL–1 (this assumption ignores additives). Also assume complete combustion.
1. If, as of March 2017, we had about 407ppm of atmosphere CO2 and we continue...
1. If, as of March 2017, we had about 407ppm of atmosphere CO2
and we continue to increase the amount of CO2 at the rate of about
2ppm. How many years will it take to reach 450ppm?
Climate Change Activity Climate Change and the Spread of Disease Vectors Is there global warming? Bellevue College meteorologist Kent Short provides a "Global Warming Up-date" every January. The current up-date (for 2017) stresses the trends during the 21st century where the 117 years...
2. From March 2017 to March 2019 the atmosphere CO2 went from about 407ppm to 415.5ppm....
2.
From March 2017 to March 2019 the atmosphere CO2 went from about
407ppm to 415.5ppm. What is the average increase in CO2 for those
two years?
3.
Based on question 2, how many years before we reach 450ppm?
Climate Change Activity Climate Change and the Spread of Disease Vectors Is there global warming? Bellevue College meteorologist Kent Short provides a "Global Warming Up-date" every January. The current up-date (for 2017) stresses the trends during the 21st century where the...
When methanol, CH, OH, is burned in the presence of oxygen gas, 02, a large amount...
When methanol, CH, OH, is burned in the presence of oxygen gas, 02, a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The combustion of methanol has the balanced, thermochemical equation CH, OH(g) + O2(g) → CO2(g) + 2 H2O(1) AH = -764 kJ How much methanol, in grams, must be burned to produce 609 kJ of heat? mass: mass: g
How molecules of CO2 (g) are produced when 0.75 moles of propane are burned? Chemical reaction:...
How molecules of CO2 (g) are produced when 0.75 moles of propane are burned? Chemical reaction: C3H8 + 5O2 à 3CO2 + 4H2O
When methanol, CH3OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is released. For this r...
When methanol, CH3OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The combustion of methanol has the balanced, thermochemical equation CH3OH(g)+32O2(g)⟶CO2(g)+2H2O(l)Δ?=−764 kJ How much methanol, in grams, must be burned to produce 807 kJ of heat? mass in grams:
The organic molecules of living organisms have a measurably lower ratio of carbon-13/carbon-12, two stable isotopes of carbon. The ratio of carbon 13/carbon-12 is higher in non-organic molecules. What does this tell us about the rise in CO2 in the atmosphere over the last century? O Carbon dioxide molecules containg carbon-13 are heavier and sink to the ocean depths, making them less available to organisms. O The source of CO2 rise in the atmosphere is definitely due to the burning...
1. If, as of March 2017, we had about 407ppm of atmosphere CO2
and we continue to increase the amount of CO2 at the rate of about
2ppm. How many years will it take to reach 450ppm?
Climate Change Activity Climate Change and the Spread of Disease Vectors Is there global warming? Bellevue College meteorologist Kent Short provides a "Global Warming Up-date" every January. The current up-date (for 2017) stresses the trends during the 21st century where the 117 years...
2.
From March 2017 to March 2019 the atmosphere CO2 went from about
407ppm to 415.5ppm. What is the average increase in CO2 for those
two years?
3.
Based on question 2, how many years before we reach 450ppm?
Climate Change Activity Climate Change and the Spread of Disease Vectors Is there global warming? Bellevue College meteorologist Kent Short provides a "Global Warming Up-date" every January. The current up-date (for 2017) stresses the trends during the 21st century where the...
When methanol, CH, OH, is burned in the presence of oxygen gas, 02, a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The combustion of methanol has the balanced, thermochemical equation CH, OH(g) + O2(g) → CO2(g) + 2 H2O(1) AH = -764 kJ How much methanol, in grams, must be burned to produce 609 kJ of heat? mass: mass: g
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