The water that I placed activated carbon in actually increased by 2pH rather than decreasing. 3. Based on your data, what effect do you predict coal mining has on the environment? Answer = Coal mining is the removal of coal from the earth which slows the Earth's capability to decrease the acidity of groundwater. If an ideal pH level is 7 than the carbon was able to take our acidic water and make it more neutral.
Coal hypothesis = If activated carbon is added with 100mL of water, it will increase the pH over 48 hours. 2. Based on the results of your experiment, would you reject or accept each hypothesis that you produced in question 1? Explain how you determined this. a. Pyrite hypothesis accept/reject = I would accept the hypothesis, seeing as how the pH reduced from 6 to 2. b.
a. Pyrite hypothesis accept/reject = I accept my hypothesis because after the pyrite was introduced to the water the level of ph dropped to 4 making the water more acidic. b. Coal hypothesis accept/reject = I reject my hypothesis because the ph level rose slightly making it less acidic after the coal was introduced to the water sample. 3. Based on your data, what effect do you predict coal mining has on the environment?
Explain how you determined this. Pyrite hypothesis accept/reject = I would reject as there was no change. Coal hypothesis accept/reject = I would accept as ph was indeed higher Based on your data, what effect do you predict coal mining has on the environment? Answer = I would say coal mining increases acidity in the environment. What can be done to prevent mine drainage from damaging the ecosystem?
Lab 4 – Energy Sources and Alternative Energy Experiment 1: The Effects of Coal Mining |Table 1: pH of Water Samples | |Water Sample |Initial pH |Final pH (24-48 hours) | |Pyrite |6 |7 | |Activated Carbon |6 |7 | |Water |6 |6 | NOTE: Picture below is after 48 hours of all three samples sitting in a warm place. [pic] POST LAB QUESTIONS 1. Develop hypotheses predicting the effect of pyrite and coal on the acidity of water? a. Pyrite hypothesis = If pyrite is in the water source, then it will make the specimen more acidic. b.
Lab 4 – Energy Sources and Alternative Energy Experiment 1: The Effects of Coal Mining Table 1: pH of Water Samples | Water Sample | Initial pH | Final pH (after 48 hours) | Pyrite | 5 | 5 | Activated Carbon | 5 | 7 | Water | 5 | 5 | POST LAB QUESTIONS 1. Develop hypotheses predicting the effect of pyrite and coal (activated carbon) on the acidity of water? a. Pyrite hypothesis = If pyrite is added to water, then the water will become more acidic. b. Coal (activated carbon) hypothesis = If coal is added to water, then the water will become more acidic.
Lab 4 – Energy Sources and Alternative Energy Experiment 1: The Effects of Coal Mining Table 1: pH of Water Samples | Water Sample | Initial pH | Final pH (24-48 hours) | Pyrite | | | Activated Carbon | | | Water | | | POST LAB QUESTIONS 1. Develop hypotheses predicting the effect of pyrite and coal on the acidity of water? a. Pyrite hypothesis = b. Coal hypothesis = 2. Based on the results of your experiment, would you reject or accept each hypothesis that you produced in question 1?
1b)Coal is a fossil fuel, which means when it is burnt it releases unwanted pollutants which have a negative and harmful impact on our environment. These pollutants are: Carbon Dioxide- This gas is considered to be the most harmful pollutant as it contributes to global warming. Coal is attributed to approximately 20% of the total pollution globally per year of all the fossil fuels. Sulfur emissions- when sulfur mixes with oxygen a harmful substance is formed. SO2, sulfur dioxide effects our trees and water systems and is the prominent cause of acid rain.
For example, if a particular isotope has a half-life of 20 yr, and the starting amount of the isotope is 100 mg, how much of the isotope will be left in exactly 100 yr? To solve this problem, we first make a chart containing the information we know. time |0 yrs | | | | | | | |amount |100 mg | | | | | | | | Since the half-life is 20 yr, each time interval in the chart should add 20 yr to the previous interval until the time of 100 yr is reached. time |0 yr |20 yr |40 yr |60 yr |80 yr |100 yr | |amount |100 mg | | | | | | | Since the time represented by each interval is the half-life of the isotope, the amount of the isotope must decrease by 1/2 for each interval. For instance, at the end of the first 20 yr interval, the amount of the isotope would decrease by 1/2 to 50 mg.
It will also discuss the so-called “War on Coal” and President Obama’s strides to more heavily regulate coal and embrace cleaner energy. Part III will discuss the cleaner and renewable energy options for Pittsburgh and how the region can benefit from the Federal Government’s plan to move away from fossil fuels, especially coal. The article will debate on the effects on the Pittsburgh region, and will argue that at first the costs may be high, but the planned sanctions will be advantageous to Pittsburgh. This section will also discuss the forthcoming legal issues facing coal powered plants in the region. The purpose of this article is not to condemn coal or its history with the Pittsburgh area, but rather to advocate a brighter, cleaner future for the region.