Calculate the volume of 0.250 M H2SO4 that contains 0.250 g H2SO4. 0.250 g H2SO4 x 1 mole x 1 L = 0.0102 L 98.12 g 0.250 mole 5. 1.50 g of NaCl is dissolved in 100.0 mL of water. Calculate the concentration. 6.
Moreover, “The advent of the steam locomotive and railroad also saw the start of major pollution caused by big business, which is all too often seen today. Polluted rivers and smoke-filled air began to dominate cities, which in turn created poor living and working conditions that gave rise to socialism. The most direct pollution problem created by the locomotive was the carbon dioxide emitted into the atmosphere. It gave way to poor air quality and poor living conditions. Additionally, the steam locomotive supported businesses and industries where pollution was an accepted and normal thing.
29.4 atm B. 4.89 atm C. 25.1 atm D. 36.0 atm _____ 5. The vapor pressure of pure ethanol at 60 °C is 349 mm Hg. Calculate the vapor pressure at 60 °C of a solution prepared by dissolving 10.0 mol of naphthalene (nonvolatile) in 90.0 mol of ethanol. A.
The following data were obtained when a sample of barium chloride hydrate was analyzed as described in the Procedure section. Calculate (a) the mass of the hydrate, (b) the mass of water lost during heating, and (c) the percent water in the hydrate. Mass of empty test tube 18.42 g Mass of test tube and hydrate (before heating) 20.75 g Mass of test tube and anhydrous salt (after heating) 20.41 g. Mass of the Hydrate is 2.33g. Loss (H2O) is 0.34g. Percent H2O in Hydrate is equal 0.34/2.33=14.6% 3.
2013).Pharmaceutical companies sometimes place active chemicals and waste into groundwater sources, in which almost all of the groundwater may be untreated which most likely cause contamination. (Herber, 2002). Abstract: Increase in the emissions of carbon dioxide by burning fossil fuels is the largest cause of environmental down grading resulting not only in global warming but also causing acid rain which alters the pH balance of ground water. Water is a universal solvent; however, its dissolving properties are very sensitive to changes in temperature and pH. Global economic growth has, unfortunately,
Atmospheric Pollution Environmental Science SCI 275 University of Phoenix July 29, 2011 BY Reigard U. Brown Sr. The paper that I am writing will be about one of the problems we have in the world is Atmospheric pollution. Atmospheric pollution is the introduction of chemicals, particulate matter that cause harm or discomfort to humans and living organisms in our atmosphere. There are many different ways that air pollution can be omitted into the air we breathe like pollution that comes from house cleaning products, older model cars, energy plants, and forests fire.
Such remedies such as recycling, purification, treatment, and management of wastes can diminish the issues of a detrimental environment. Air pollution is also caused by technology and human influence. Similar to water damage, air pollution is derived from chemicals and toxins which are released into the atmosphere. Thus, the toxins begin to reveal the depletion of natural resources. Fuel combustion and automobile transportation are two large factors of air pollution.
This in turn flows into a stream or the lake itself. This type of runoff includes chemicals, fertilizers, pesticides and suspended solids. Sewage treatment plants are another source of the pollution. When in stormy conditions, the sewage treatment plants tend to overflow and empty raw sewage directly into the lake. However most of these systems have been, or are in the process of, being replaced.
Cadmium is a ubiquitous heavy trace metal toxicant and is well known as an industrial pollutant. Exposures to cadmium have been reported to reduce male fertility. Chromium is an important heavy metal which possesses several industrial applications Occupational exposure to chromium leads to alteration of semen status and may adversely affect the reproductive success of exposed workers. Lead is the most significant toxin of the heavy metals. Industrial decisions, such as the addition of lead to paints, dyes, and gasoline, have created an epidemic of lead poisonings.
As a result, many trucks have to travel to and fro the mining site to supply the water and other amenities causing dust pollution and soil erosion on the dirt roads. Chemicals used in the fracking process are able to sip through cracks in the rocks and the soil and contaminate any water sources they meet. This water finds its way into the community or cities. When consumed, these chemicals can lead to cancer, defects in newly-born babies and disorders in the nervous system. Large amounts of methane and other poisonous gases released into the air from the gas wells contribute to heavy air pollution and global warming.