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A 100mg sample of beryllium

A 100mg sample of beryllium 11 decays by 4.9% of its previous mass every second.Determine the half life of beryllium-11(hint:the
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The molecule beryllium chloride has one beryllium atom, a metal, and two chlorine atoms, nonmetals. What kind of bond will they
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2. asked by ㅤㅤㅤㅤㅤ
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A sample of air contains 21.9ìg/m3 of beryllium dust. How many atoms of beryllium are present in a room with dimensions of 8
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2. asked by Cheyenne
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A sample of air contains 12.8 µg/m3of beryllium dust. How many atoms of beryllium are present in a room with dimensions of 8
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2. asked by Ryan
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A sample of air contains 32.7 µg/m3of beryllium dust. How many atoms of beryllium are present in a room with dimensions of 8
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2. asked by hanan
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A sample of air contains 14.5 µg/m3of beryllium dust. How many atoms of beryllium are present in a room with dimensions of 11
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2. asked by pho le
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Element Y has a half life of 50days. How much of a 100mg of its sample will remain after 5 month?
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2. asked by Olushola
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combustion analysis of a 285.7 mg sample of a hydrocarbon produces 880.8 mg of CO2 ans 405.7 mg of H2O.What is the empirical
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2. asked by Braydon
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Beryllium-7 has a half-life of 53 D. A sample was observed for one minute and there were 26,880 decays.a.) what is the activity
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2. asked by Samaira
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In my bio lab we are creating serial disk dilutions (100mg, 300mg, 500mg) from a plant extraction sample.Wood sample #1 (7mL of
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2. asked by Ali
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