1. How can you harness energy from a nuclear power plant? 2. Differentiate fission from fusion. 3. What is the difference between nuclear reaction and chemical reaction?
1. How can you harness energy from a nuclear power plant?
2. Differentiate fission from fusion.
3. What is the difference between nuclear reaction and chemical reaction?
1. If gallium – 68 has a half-life of 68.3 minutes, how much of a 160.0 mg sample is left after 1 half life? 2 half lives? 3 half lives?
2. Iron-59 is used in medicine to diagnose blood circulation disorders. The halflife of iron-59 is 44.5 days. How much of a 2.000 mg sample will remain after133.5 days?
3. The anticancer drug cis-platin hydrolyzes in water with a rate constant of 1.5 × 10−3 min−1 at pH 7.0 and 25°C. Calculate the half-life for the hydrolysis reaction under these conditions. If a freshly prepared solution of cis-platin has a concentration of 0.053 M, what will be the concentration of cis-platin after 5 halflives? after 10 half-lives?
4. Ethyl chloride decomposes to ethylene and HCl in a first-order reaction that has a rate constant of 1.6 × 10−6 s−1 at 650°C. What is the half-life for the reaction under these conditions? If a flask that originally contains 0.077 Methyl chloride is heated at 650°C, what is the concentration of ethyl chloride after 4 half-lives?
5. In 1990, the remains of an apparently prehistoric man were found in a melting glacier in the Italian Alps. Analysis of the 14C content of samples of wood from his tools gave a decay rate of 8.0 dpm/g carbon. How long ago did the man die?
6. It is believed that humans first arrived in the Western Hemisphere during the last Ice Age, presumably by traveling over an exposed land bridge between Siberia and Alaska. Archaeologists have estimated that this occurred about 11,000 yr ago, but some argue that recent discoveries in several sites in North and South America suggest a much earlier arrival. Analysis of a sample ofcharcoal from a fire in one such site gave a 14C decay rate of 0.4 dpm/g of carbon. What is the approximate age of the sample?
1. Bataan Nuclear Power Plant is a nuclear power plant, completed but never fueled, on Bataan Peninsula. It was the Philippines' only attempt at building a nuclear power plant. It was mothballed due to safety concerns in the wake of the 1986 Chernobyl Nuclear Power Plant disaster in the former Soviet Ukraine and issues regarding corruption. In 2019, the Department of National Defense and Philippine Nuclear Research Institute expressed its support for the revival of the nuclear power plant. Despite never having been commissioned, are you in favor of setting a nuclear plant to operation in the country?
2. Is using nuclear power really the answer to clean, environmentally friendly energy?
3. What kind of resources does nuclear energy require? With this in mind, is it worth the effort and the investment to acquire nuclear energy?
4. Are the impacts of the Chernobyl (Ukraine) and Three Mile Island(Pennsylvania) nuclear accidents still relevant today? If so, how?
5. How likely is it that accidents like those in Chernobyl, Three Mile Island, and Fukushima will happen again?
6. In case a nuclear disaster happens, what suggestions can you give to protect ourselves from the invisible bullet?
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