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4. thorium-234 has a half-life of 24.1 days. what percentage of the original thorium-234 in a sample will remain after 144.6 days?
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1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle
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Chemistry, 22.06.2019 10:30
Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2
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4. thorium-234 has a half-life of 24.1 days. what percentage of the original thorium-234 in a sample...
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