Enviromental - Assignment Example

Comments (0) Cite this document
P= 6×10-7, R = 0.0821, T = 170K. At 1 atm, V = 22.4., at 0.006 atm, V = (0.006 × 22.4)/1 = 0.1344. Since PV = nRT, then n = PV/RT; n = 5.78×10-5. Based on the equation: ppm = (mg/L/MW) ×22.4. mg/L = (5.78×10-5) × 1000 = 5.78×10-2.
1 ppm = 1 volume of…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER92.6% of users find it useful
Read TextPreview

Extract of sample "Enviromental"

Chemistry 513: Assignment Question From PV = nRT. P= 6×10-7, R = 0.0821, T = 170K. At atm, V = 22.4., at 0.006 atm, V = (0.006 × 22.4)/1 = 0.1344. Since PV = nRT, then n = PV/RT; n = 5.78×10-5. Based on the equation: ppm = (mg/L/MW) ×22.4. mg/L = (5.78×10-5) × 1000 = 5.78×10-2.
In this case, ppm of H2O = (5.78×10-2/18) ×22.4 = 7.19×10-2 ppm.
Question 2
1 ppm = 1 volume of gas/106 volumes of air. Therefore, 0.01 ppm = 0.01 volume of Ozone gas/106 volumes of air. Ppmv = (ppm/MW) × 22.4. Ppmv of ozone = 0.00467 ppmv O3. This means for every 1 million volume of air, there is 0.00467 volumes of Ozone (Dr Richards 01). Therefore, if 1 million volumes of air = 4.88×1021, then 0.00467 volumes of Ozone = (0.00467 × 4.88×1021)/1×106. Mass of Ozone in troposphere = 2.28×1013g.
Similarly, it means 3 ppm = 3 volumes of Ozone gas/106 volumes of air. Ppmv of Ozone in stratosphere = (ppm/MW) × 22.4. Therefore, ppmv = (3/48) × 22.4 = 1.4ppmv. This means that 1 million volumes of air have 1.4 volumes of Ozone by mass. 1 million volumes of air in stratosphere represent 2.5×1020 g of air. What about 1.4 ppmv of Ozone? Mass of Ozone = (1.4× 2.5×1020)/1×106. Mass of Ozone = 3.5×1014g.
Question 3
Partial pressure, Px = Cx×P where Px is partial pressure, Cx is the partial concentration of gas x and P is the entire pressure. N2O, MW of 44, has a concentration of 0.31ppm at ground level. Ne, MW of 20, has concentration of 18 ppm at 30km. Pressure of Ne with respect to the altitude of 30 km is given by Pa = 0.9877a, where a = altitude in 100’s of meters. Therefore, Pa = 0.9877300= 0.0244atm. Partial pressure of Ne = 18ppm×0.0244 = 0.44 atm. Partial pressure of N2O = 0.31×1 = 0.31 atm. Therefore, Ne has a greater partial pressure that N2O.
Question 4
100% relative humidity represents 0.031atm H2O. On the other hand, liquid water is present at 100ug/m3. Assuming a temperature of 25oC, then we will convert ug/m3 into ppmv using the formula ppmv = (mg/m3 × oK)/ (0.08205 × MW). With respect to water vapor, ppmv = (0.1 mg/m3 × 298)/(0.08205 × 18). Ppmv = 20.18. Using PV = nRT, then moles of air in 1 mol of gaseous mixture = 1×106 / 6.023×1023 = 1.66×10-18. Converting moles into volume we get 4.06×10-14 cm3. Therefore, the urban atmosphere contains 20.18 molecules of liquid H2O /4.06×10-14 cm3 of air.
On water vapor, 30% relative humidity represents (30 × 0.031)/ 100 = 0.0093 atm. In 1 atm, volume of gas = 24.45L, in 0.0093 atm, volume of vapor = (0.0093 × 24.45)/1 = 0.227L. Based on theory, 1 mol = 24.45L (Dr Richards 01). Therefore, 0.227L contains (0.227×1)/24.45 = 0.0093 molecules/L. In terms of cm3, the atmosphere has 9.3 molecules of H2O vapor/4.06×10-14 cm3. Therefore liquid water is more abundant as compared to water vapor in the same environment.
Work Cited
Dr Richards. “CHEM 3400 - Mathematics in Environmental Chemistry: Converting Atmospheric Pollutant Concentrations”. January 16, 2013. Web January 28, 2014.! Read More
Cite this document
  • APA
  • MLA
(“Enviromental Assignment Example | Topics and Well Written Essays - 500 words”, n.d.)
Retrieved from
(Enviromental Assignment Example | Topics and Well Written Essays - 500 Words)
“Enviromental Assignment Example | Topics and Well Written Essays - 500 Words”, n.d.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document


Enviromental issue

...? Environmental Issue Reviewing three articles about Air Pollution in China …………………. College/ ………….. …………. Introduction China has emerged as a fastest growing economy in the world to claim as the superpower since 1978, but, its environment degradation continues to cause severe economic, health and many other problems due to greater pressure from its population. The annual expenditure from environmental pollution has been accounted to be 283 billion Yuan per year (Wang, 162). Many media around the world made headlines about China’s air pollution in 2008 when Ethiopian long-distance runner decided not to compete in the Olymics-2008 held in China due to its extremely dangerous condition of air pollution. The severity of air pollution...
8 Pages(2000 words)Research Paper

Enviromental science

...?Housing Scenario Number: __1__ (Answer Sheet) Your Response Assigned Reading Source Page(s) Column (if applicable) Line(s) The first prioritywould be to resolve the elevated carbon dioxide indicates air pollutants are contaminating the indoor air from garages as they transfer outdoor air indoors, or there is a malfunctioning gas stove or heater. The elevated carbon dioxide could also be caused by tobacco smoke. The acute health affect includes impairment of mental faculties such as dizziness or difficulty concentrating. This would be the first priority to assess further because there could be a vehicle leaking exhaust from the garage or a malfunctioning gas stove or heater that needs to be replaced and the effects could be subtle...
5 Pages(1250 words)Research Paper

The Koh Phi Phi Islands

...). It is a delightful place to spend some days relaxing on its beautiful beaches, discovering its numerous coves and bays, as well as climbing its precipitous vertical peaks and investigating the huge caves that hide the edible nests of swifts Before 2004, tourism numbers had reached approximately 1.2 million years (Graci, et al., 2010, pg. 91). However, the island suffered from enviromental issues such as lack of or no fresh water, expensive generator-produced electricity, ineffective waste management , beach degradation and rapid development with no formal planning (Dodds, 2010, pg. 255). The residents faced appaling conditions; standing waste water, strong odours and ground water pollution from overflowing septic...
10 Pages(2500 words)Essay

Enviromental Science

...Good (morning/afternoon/evening) ladies and gentlemen. On this annual convention of Citizens for a Greener Planet, we all gather to understand and apply the sustainable development. On such occasions, we usually forget that what we are aiming at here are not facts and figures or data that are deteriorating our existence, our survival. We are looking at the washed out color green and trying to re-paint it through sustainable development. To bring it much closer to the hearts of my listeners today, I decide to illustrate the concept by discussing the social factors that brought about the collapse of the Easter Island civilization. The 'decline and fall' of Easter Island and its alleged self-destruction has become the poster child... (morning/af...
3 Pages(750 words)Speech or Presentation

Enviromental management

...Environmental Management Environmental management is one of the key obligations of the government but this has to be done in collaboration with key players in the economy. Such players include paint manufacturing factories, non governmental organizations with aims of salvaging the environment through tree planting and clean ups of effluents from industries and factories, the United Nations organization and individual persons among others. Environment management is not only the management of the environment but also the management of the interaction of the society at large and the environmental impacts. Environmental management is not only the conservation of the environment solely for the sake of the environment but also... Management...
7 Pages(1750 words)Essay

Enviromental engineering

... and Number of the Teacher’s ENVIRONMENTAL ENGINEERING Introduction Both nitrogen and phosphorus stimulateeutrophic conditions in receiving waters. Therefore these elements have to be removed from waste water effluents (Rose 349). It is vital that phosphorus should be removed from water bodies in order to curb the growth of aquatic plants and algae, and consequently to control eutrophication. Unlike nitrogen which is fixed from the atmosphere, phosphorus can come only downstream to aquatic systems, not including that deposited from the atmosphere. Appropriate fertilisation plans are required for controlling diffuse sources of phosphorus such as that from agricultural fields. Chemical or biological processes can help specific... and Number of...
4 Pages(1000 words)Essay

Enviromental science

...Environmental Science” “How many people can live on planet earth” is a documentary made by David Attenborough including many based on the natural habitats and earth. He is well-known for presenting the nine “life series” which is based on the survey conducted on all life on the planet. He has been the voice many other presentations, he is also a former senior manager at BBC. Attenborough is widely known as “a national treasure” in Britain; in 2002 he was named among the 100 greatest Britons. in this documentary David Attenborough has addressed to the major social, environmental, economical and natural problem, over-population and its impact on earth and its natural habitats. Over-population is one of the majors for most... Science” “How many ...
2 Pages(500 words)Essay

Enviromental science

... Reflection from a Trash Journal Renowned naturalists including Charles Darwin used journals and photographs to document their observations using them as a means of information gathering. All animals produce wastes in their existence and characteristically leave evidence of their existence. Humans use various tools, produce products, and modify the environment to extreme levels that our activities profoundly affect the environment. Of major concern is the issue of human trash and production of wastes which has led to pollution effects and health complexities. American citizens are leading waste producers. As a consumer, there are a variety of products that I use on a daily basis. I usually buy various commodities that are packed... Reflection...
1 Pages(250 words)Essay

Enviromental Problem

...Environmental Problem Environmental Problem Our habitat or the environment is an extremely crucial element in the existence of human beings (Cone & Myhre, 2000). A majority of human beings, however, do not take this into consideration as it can be seen by the extent of waste being dumped into rivers and the pollution of air among other factors. Humans have put their lives first not forgetting that they dwell in the same environs, which they are polluting (Egan, 2003). Various companies such as Growing Power, Green for All, Smart Growth and Community Supported Agriculture among others have been erected in order to deal with this menace. They have incorporated efforts that advocate for environmental conservation techniques (Egan... Problem...
2 Pages(500 words)Essay
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Assignment on topic Enviromental for FREE!

Contact Us