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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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Select the correct answer. which phrase correctly describes temperature? o a. average rotational kinetic energy of the particles in an object o b. average energy of the particles in an object c. average translational kinetic energy of the particles in an object od. all energy possessed by the particles in an object
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Chemistry, 22.06.2019 20:30
Which of the following is not true about the atomic model of substances?
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