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Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?
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In the experiment you asked to react hydrochloric acid and with sodium hydroxide. when measuring the volume of the reactants, which instrument would give the greatest precision.
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Ascientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon dioxide, oxygen, and nitrogen. which term most likely describes what she is measuring?
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The plane _than we expected...
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