Chemistry
Chemistry, 26.06.2019 04:30, destinywashere101

What is uranium made of? for a keynote (school)

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Chemistry, 29.07.2019 17:00, temperent6049
Uranium is a metallic element that is used in nuclear reactors and nuclear weapons. the vast majority of uranium found on earth is in the form of uranium-238, an isotope with a mass number of 238, while the uranium that is used for nuclear reactors and weapons is uranium-235, an isotope with a mass number of 235. what is the atomic difference between uranium-235 and uranium-238? uranium-235 has three fewer protons than uranium-238. uranium-235 has three fewer neutrons than uranium-238. uranium-235 has three fewer electrons than uranium-238. uranium-235 has three fewer atoms than uranium-238.
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History, 01.09.2019 08:50, kathleenirwin
Which option would best complete the sentence? german scientists were concerned about nazi restrictions on uranium sales a. uranium would not be available for industrial research b. uranium was important to german missile programs c. uranium paid for german scientific research d. uranium could be used in research on atomic weapons
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Business, 09.09.2019 17:20, yuser7865
Most of the world's supply of uranium currently comes from the mines. it is possible to extract uranium from seawater, but the cost of doing so is greater than the price that uranium fetches on the world market. therefore, until the cost of extracting uranium from seawater can somehow be reduced, this method of obtaining uranium is unlikely to be commercially viable. which of the following would it be most useful to determine in evaluating the argument? (a) whether the uranium in deposits on land is rapidly being depleted (b) whether most uranium is used near where it is mined (c) whether there are any technological advances that show promise of reducing the costs of extracting uranium from seawater (d) whether the total amount of uranium in seawater is significantly greater than the total amount of uranium on land (e) whether uranium can be extracted from freshwater at a cost similar to the cost of extracting it from seawater
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Chemistry, 18.09.2019 22:00, dmahaney8538
Which of the following statements are true of uranium-238? i. its chemical properties will be exactly like those of uranium-235. ii. its mass will be slightly different from that of an atom of uranium-235. iii. it will contain a different number of protons than an atom of uranium-235. iv. it is more plentiful in nature than uranium-235. a. iii, iv b. i, ii, iii c. i, ii, iv d. ii, iii, iv e. all of these
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