Chemistry, 19.03.2020 20:27 princessbrebre4482
Element X is a radioactive isotope such that every 82 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 8900 grams, how long would it be until the mass of the sample reached 7700 grams, to the nearest tenth of a year
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In one or two grammatically correct sentences, write a definition for the term molecule geometry
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Athe top of a hill, an athlete on a skateboard has x joules of mechanical energy. how much mechanical energy will she have at the bottom of the hill? ignore the effects of friction.
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The vapor pressure of ethanol is 1.00 × 102 mmhg at 34.90°c. what is its vapor pressure at 61.61°c? (δhvap for ethanol is 39.3 kj/mol.)
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